https://www.steubengineer.com/blog daily 0.75 2020-12-21 https://www.steubengineer.com/blog/slimming-down-a-wrench monthly 0.5 2020-11-29 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606547903548-2XVXT7N89IUBAUHS3VGI/wrench_machining.jpg Blog - Slimming down a wrench Sometimes you’ve got to pare down a tool to fit into a tight space. In this case, I had to snake this 1 3/16” end wrench into a slot 0.375” wide. Since the wrench was well over half an inch thick to begin with, some extensive material removal had to occur. This is exactly the kind of ad-hoc job that justifies keeping an old manual milling machine handy. There’s one trick I used here that the photo doesn’t show. To enhance grip on the wrench, I sandwiched a strip of emery paper between the moving jaw of the vise on the wrench handle. Combined with the machinist’s jack placed under the wrench head, this allowed for a 0.02” depth of cut, without the danger of dislodging the work. Surface finish was… less than great, but aesthetics were not exactly my highest priority. For a $15, no-name-brand wrench from a big box store, I am impressed with the toughness of the material. The razor-sharp blue chips covering the mill table are good evidence of that. Certainly enough to justify using a carbide roughing mill. I wonder if the manufacturer will honor their “no questions asked lifetime warranty?” https://www.steubengineer.com/blog/a-landscape-of-melted-nickel monthly 0.5 2020-11-29 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606627648914-GFY5Q2P374Z1K302LM0J/melted_nickel_02.jpg Blog - A landscape of melted Nickel The partial melting of the Nickel results in what I think is an incredible visual effect. Molten Nickel readily wets the substrate steel, resulting in undulating and flowing patterns. Under 4x magnification the resemblance to a landscape, as shot from the air, is striking. The gold to purple/blue coloration is caused by and effect known as thin film interference. This is the same phenomenon that causes the distinctive coloration of soap bubbles and oil films on water. In this case, a thin clear coating (probably Nickel oxide) has formed on top of the foil. Different colors indicate areas of differing film thickness - which in turn reflect variations of temperature within the furnace. In the end, this was a failure caused by poor process control. But at least it yielded something interesting to look at! https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606627454811-F6JRSA27XZT5ZNI1VY04/melted_nickel_01.jpg Blog - A landscape of melted Nickel - When heat-treating metal objects, it’s common to wrap them in a metal foil. This prevents the steel from building up excessive surface scale by excluding atmospheric gasses. In this case, 316 stainless steel was heat treated while wrapped in Nickel foil. Usually that works pretty well, but this time around the furnace temperature ran a bit high. As a result, the Nickel foil partially melted and fused to the steel. The result has quite an unusual look! https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-1 monthly 0.5 2020-12-01 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606801510585-LIGVDBIEOILYVHQ327KB/drafting_board.jpg Blog - Yamaguchi Framebuilding School - Day 1 - Once we had determined all the important values, Koichi brought out a large roll of paper and drawing tools. We drafted the frame by hand in one-half scale. Interestingly, Koichi told me that many classic European framebuilders never diagrammed their frames before starting! To me, the value of the drafting process is obvious. In addition to defining all the tube lengths and miter angles, the scale drawing allows for critical clearances to be checked quickly and thoroughly. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606800788280-X3D8T2C7W3Q1R0EV80FB/bronze_medal.jpg Blog - Yamaguchi Framebuilding School - Day 1 - Upon arrival this morning, Koichi gave me a wonderful history of modern bicycle frame building, beginning in the 1930’s. His home is also something of a museum, with historically important bicycles and frames adorning the walls, perched on railings, and hanging from the ceiling! We moved into his design studio and had a long discussion of his history in the bicycling industry. Koichi is a veritable encyclopedia of knowledge - being both a master framebuilder and a certified cat-1 race mechanic. I was completely fascinated, and we spent the rest of the morning discussing cycling history, philosophy, and practices. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606800178279-OAJXRCE9EEP5GA8U9HXQ/shop_pano.jpg Blog - Yamaguchi Framebuilding School - Day 1 Panoramic view of the Yamaguchi Framebuilding workshop. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606805980822-Q4ADXK1RBRNQ72YGT2T7/tubes_annotated.jpg.png Blog - Yamaguchi Framebuilding School - Day 1 Some assembly required… https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-2 monthly 0.5 2020-12-02 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606890304886-JALQ7W0B60L0VSB4WWYE/PXL_20201201_190241094.jpg Blog - Yamaguchi Framebuilding School - Day 2 - With that knowledge in hand, the first task is to cut the tubes to length, and then miter their ends so that they fit together properly. I had anticipated that we would perform this task using a milling machine - but no! Koichi informs me that the most sensible way to cut and miter the tubes is by hand, using only a hacksaw and handheld files. This runs totally contrary to my intuition, but I am here to learn after all! We begin by cutting tubes to length using a hacksaw. This tool differs slightly from the one you may be familiar with in two respects. First, the saw frame holds the blade in a high state of tension, to keep it very straight and prevent the cut wandering. Second, the blade itself is manufactured from high-speed steel (HSS) and has very fine teeth (32 per inch). The blades are made by the L.S. Starret company, who are better known to me for their machinist’s tools. After a few practice cuts, I am surprised to find how rapidly the tough alloy tubing can be cut, while maintaining excellent squareness and dimensional tolerances. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606890679536-MRHHUU1N5VZ14FZSEAE0/PXL_20201201_221653083.jpg Blog - Yamaguchi Framebuilding School - Day 2 - Once the tubes have been cut approximately to length, they must be mitered in order to fit together properly. This requires cutting a smooth and uniform compound curve in the tube end - something that seemed extremely difficult to do by hand! However, Koichi demonstrated a remarkable method to accomplish this quickly and easily. First, a flat file is used to cut two planes tangent to the desired contour. The intersection of these planes with the tube forms a pair of conic sections - parabolas in this case. A half-round file can then be used to slightly reshape these parabolas into the required form. Just as Koichi said, with a little practice a miter can be cut in this fashion in less time than it takes to set up a mill to do the same job! In the future, I will try to make an animation or video demonstrating the mitering technique. Maybe I am just the last person on earth to find out about it, but it really knocked my socks off. Another future project is a simple program to automatically generate high-accuracy templates based on the actual (not nominal) tube diameter measurements. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606890829871-8JJD3KDUDWNYAONRLAKE/PXL_20201201_233128969.jpg Blog - Yamaguchi Framebuilding School - Day 2 - After a lunch break, my instruction in brazing begins. Since I've never done this before, we begin with an introduction to the equipment and materials. An small oxygen-acetylene torch is used to provide heat, and a "gasflux" system is used to mix a fluxing compound into the fuel gas stream. This reduces the need to manually apply flux beforehand in order to prevent oxidation during brazing. It also has the pleasing side effect of turning the welding flame an incredible Wizard-of-Oz green! The material that we will be using to perform the frame brazing is Gasflux C-04 Nickel Bronze. Koichi tells me that this is the most widely used material in the US for brazing frames. It has a tensile strength of 430 MPa, and a liquidus of 882 degC. Much like the tube steel, it is a good compromise between mechanical strength, and ease of welding. That's all for today, I've got hours and hours of brazing practice before I'm ready to start on the frame. More exciting new material tomorrow, I’m sure! https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606890961556-R81DL30R8Y1ALKT6LLV8/PXL_20201201_190523914.jpg Blog - Yamaguchi Framebuilding School - Day 2 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606890993504-8SSQD7EPTMCWQ7IE7DU3/PXL_20201201_190838849.jpg Blog - Yamaguchi Framebuilding School - Day 2 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606891021684-DKQHR9DAFJWP9XI8P3VG/PXL_20201201_203038137.jpg Blog - Yamaguchi Framebuilding School - Day 2 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606891039143-XTPJVRX766NLFBKSOVIA/PXL_20201201_203214090.jpg Blog - Yamaguchi Framebuilding School - Day 2 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606891054678-JUS971SBTZS9DSFZ2BZR/PXL_20201201_214442755.jpg Blog - Yamaguchi Framebuilding School - Day 2 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606891069794-XRICV3XANMKISE6NGI5A/PXL_20201201_221757660.jpg Blog - Yamaguchi Framebuilding School - Day 2 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606891080221-53EH9JU3GG5HY0XD68SM/PXL_20201201_221704366.jpg Blog - Yamaguchi Framebuilding School - Day 2 https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-3 monthly 0.5 2020-12-03 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606975715894-0HJ3RNORJAK9LU6WV2PR/PXL_20201202_190037203.jpg Blog - Yamaguchi Framebuilding School - Day 3 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606977023262-JRSXFG5S4ZCBKHCMC4ED/PXL_20201203_000227018.jpg Blog - Yamaguchi Framebuilding School - Day 3 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606974055190-NIMVRMJDV0415WZ82GOR/PXL_20201202_190701595.jpg Blog - Yamaguchi Framebuilding School - Day 3 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606975572821-NI3A788OO813EXMV4B9Q/PXL_20201202_190205622.jpg Blog - Yamaguchi Framebuilding School - Day 3 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606974087930-RCP9Q19JTO8LTIRGXE33/PXL_20201202_190551801.jpg Blog - Yamaguchi Framebuilding School - Day 3 https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-4 monthly 0.5 2020-12-04 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607063277264-ODVYIW1HN1KCQYPFTY7J/PXL_20201203_211419463.jpg Blog - Yamaguchi Framebuilding School - Day 4 Brazing prep on the stem tube. The left side is ready for final cleaning, the right needs sanding. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607064085405-KL5UVOQVAH2RTTOU4UP8/crop_PXL_20201203_234212671.jpg Blog - Yamaguchi Framebuilding School - Day 4 The front triangle, removed from the setup jig and ready for additional brazing. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607063107971-24X5UGXQGJW06MM8JQUD/PXL_20201203_204911837.jpg Blog - Yamaguchi Framebuilding School - Day 4 Front triangle setup for fitting the downtube and tacking the front triangle. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607062854027-F60QI4123M56JXRZR5QW/PXL_20201203_204001910.jpg Blog - Yamaguchi Framebuilding School - Day 4 Compound miter cut into the downtube. https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-5 monthly 0.5 2020-12-08 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607151407124-TY68BZCXJ6U7QD3YWMTH/PXL_20201204_185605509.jpg Blog - Yamaguchi Framebuilding School - Day 5 Example of brazing the inner and outer surfaces of the tube joint in a single pass. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607152140658-FPW2546JRRVT43DRZTDE/PXL_20201204_231631202.jpg Blog - Yamaguchi Framebuilding School - Day 5 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607152155841-LYYGB2RQA9IM2CWID5AW/PXL_20201204_231635279.jpg Blog - Yamaguchi Framebuilding School - Day 5 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607152157469-XONJP7VFTVIYC560D8LU/PXL_20201204_235107163.jpg Blog - Yamaguchi Framebuilding School - Day 5 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607152164131-9590ZBXSHCZT1DVN8UPV/PXL_20201204_235727950.jpg Blog - Yamaguchi Framebuilding School - Day 5 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607152145695-QOD1NZTUY6QQ7OUHAAH5/PXL_20201204_235655654.jpg Blog - Yamaguchi Framebuilding School - Day 5 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607152216018-BOJT5I2Q5YXN3TB9W3EK/PXL_20201205_000408965.jpg Blog - Yamaguchi Framebuilding School - Day 5 https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-5-ex6ez monthly 0.5 2020-12-09 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607409103811-UGA9Z4TUHTTCRPLAYC12/photo_2020-12-08_01-31-23.jpg Blog - Yamaguchi Framebuilding School - Day 6 The fillet weld between seat tube and top tube has been filed smooth, but the lug brazing has not. https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-5-ex6ez-e4ns5 monthly 0.5 2020-12-11 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607496674823-7NSCJGS9OYTYQ6OLT03R/PXL_20201208_205021846.jpg Blog - Yamaguchi Framebuilding School - Day 7 The rear dropout lugs, placed in the alignment jig, capture the chainstays for tack welding. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607497962855-37H8V1ZH2B8OJBHQAF8B/PXL_20201208_175659233.jpg Blog - Yamaguchi Framebuilding School - Day 7 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607497964983-510DRAEDG7MK9QP125MX/PXL_20201208_175717441.jpg Blog - Yamaguchi Framebuilding School - Day 7 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607497974602-7YPN8AZWYQBMDDNJ7A1E/PXL_20201208_205021846.jpg Blog - Yamaguchi Framebuilding School - Day 7 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607497982135-VIMY3F08QSIJLAH864I2/PXL_20201208_205038113.jpg Blog - Yamaguchi Framebuilding School - Day 7 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607497988806-0EEROUYBHREFW85RZFWS/PXL_20201208_205051632.jpg Blog - Yamaguchi Framebuilding School - Day 7 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607497844636-IPRWNM34C2NUJ75TZUM7/PXL_20201209_000448768.jpg Blog - Yamaguchi Framebuilding School - Day 7 Is this the real life? https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-5-ex6ez-e4ns5-sjaf4 monthly 0.5 2020-12-11 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607584724756-09P2M1ATYOYHQA9PDV9O/PXL_20201210_000447699.jpg Blog - Yamaguchi Framebuilding School - Day 8 The front fork, after brazing. The bottom bracket welds are cooling in the background. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607584446847-BUBMXJAR7GLWPPA7SVPN/PXL_20201209_234122634.jpg Blog - Yamaguchi Framebuilding School - Day 8 Fork welding jig, with bubble levels used to eliminate twist. The ruler in the foreground is used to dial in the correct offset between the steering tube axis and front wheel axis. https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-5-ex6ez-e4ns5-sjaf4-m4fhj monthly 0.5 2020-12-13 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607668502260-LHQWT83JQ8CPYQWOMKS7/PXL_20201210_183652636.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607668505596-T9VE7YILFEXSTDCQ025T/PXL_20201210_190147872.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607668514229-42CA1GK30DR4805B4Y2D/PXL_20201210_190229212.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607668516882-N7HM7Z4KTGJG9B603G8Y/PXL_20201210_190300725.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607668521955-LOLIG2KHJ9AJ8W5ED8BX/PXL_20201210_190434716.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607669091243-2IRT63SZ19BG39RELI8Q/PXL_20201210_204528385.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607669094491-ZGKUHDJBX3LSSDOBE28O/PXL_20201210_225831985.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607669104393-E5G51SCXSSVAU7PT3CFS/PXL_20201211_000310561.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607669108909-FDGJ3X3Q179UX5SD0WGZ/PXL_20201211_000256769.jpg Blog - Yamaguchi Framebuilding School - Day 9 https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-5-ex6ez-e4ns5-sjaf4-m4fhj-5t2da monthly 0.5 2020-12-14 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607891537864-R4TMD1HACHFVYFC7MC9Y/PXL_20201211_163905234.jpg Blog - Yamaguchi Framebuilding School - Day 10 Manual line boring assembly. From left to right: Handle, facing cutter, head tube, conical arbor, tension spring, nut. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607900312316-SFJZERW5ZDTY5R03UVYY/image-asset.jpeg Blog - Yamaguchi Framebuilding School - Day 10 Facing using the bottom bracket shell using another line boring tool. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607902418147-SOUABB9Q9PTH9LI9YU60/PXL_20201211_205108733.jpg Blog - Yamaguchi Framebuilding School - Day 10 Frame mounted for alignment. The black object in the foreground is the centering tool used for the rear wheel dropouts. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607900001621-NKA0RV5X1MAVMTXAZSO4/PXL_20201211_175025938.jpg Blog - Yamaguchi Framebuilding School - Day 10 Two-part bottom bracket bushing. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607903214755-3WER1M2YI4ZTRZA94LZT/PXL_20201211_181550198.jpg Blog - Yamaguchi Framebuilding School - Day 10 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607903222027-QO85KNBAH0H16RM3AX14/PXL_20201211_201148773.jpg Blog - Yamaguchi Framebuilding School - Day 10 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607903213580-B9YKDGAI61AK8PVD05D0/PXL_20201211_191800463.jpg Blog - Yamaguchi Framebuilding School - Day 10 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607903629097-09UE32LY7YRAEJAZBG54/PXL_20201211_235205410.MP.jpg Blog - Yamaguchi Framebuilding School - Day 10 Frame, fork and stem at the conclusion of the course. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607888599775-UZGTF5I1GQDPPHJDDZRP/PXL_20201211_162450119.jpg Blog - Yamaguchi Framebuilding School - Day 10 Adjustable reamer used to bring the seat tube inner diameter to 27.3 mm. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607902803920-6KMUU22GIUTQSH70WO8V/PXL_20201211_211223484.MP.jpg Blog - Yamaguchi Framebuilding School - Day 10 Fork mounted for alignment. Koichi is applying force using the adjustable cheater bar on the lower blade. The centering tool makes another appearance in the foreground, while the machinist’s square on the table makes sure the fork blades describe the same arc. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607899081704-ZXMUQNOJ7KW41BKD4OFJ/PXL_20201211_170155680.jpg Blog - Yamaguchi Framebuilding School - Day 10 Campagnolo BB threading tool. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607900140699-Y5R5J3DI53VF3FE5TCP4/PXL_20201211_174047809.jpg Blog - Yamaguchi Framebuilding School - Day 10 Bottom bracket bushing once installed. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607901614067-8TR6K50IMYLPJVOIAOUL/PXL_20201211_175549559.jpg Blog - Yamaguchi Framebuilding School - Day 10 Machining the fork crown race. Maintaining contact pressure for such a large cutter was hard work! https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607899251933-7ZB5NOMSVDIJMH7QREH7/PXL_20201211_172725162.jpg Blog - Yamaguchi Framebuilding School - Day 10 Cutting the BB threads. The cutters are alternately advanced by a few turns each. https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-5-ex6ez-e4ns5-sjaf4-m4fhj-5t2da-f7pdc monthly 0.5 2021-01-21 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607922349334-4HHZXOIJZRCCESYAFCOF/crop_PXL_20201205_163313985.jpg Blog - Yamaguchi Stembuilding Class The stem plan. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607920715322-TN35HJHSHL3ZBZF5DFB9/PXL_20201205_163310467.jpg Blog - Yamaguchi Stembuilding Class A small selection of historical and modern day stems. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607922710653-YYG7XP589J3SCCBYDPYF/IMG_4443.jpg Blog - Yamaguchi Stembuilding Class https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607922710883-CZA4T99NTFEFF6ULQW51/IMG_4444.jpg Blog - Yamaguchi Stembuilding Class https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607922711549-LX8ADMQN9BQ2T5ARBIPD/IMG_4445.jpg Blog - Yamaguchi Stembuilding Class https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607922712010-PMYHJ3H4JVDPFIS7X35M/IMG_4446.jpg Blog - Yamaguchi Stembuilding Class https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1607922712466-LYNCUV8C0CUJ1PXCF721/IMG_4447.jpg Blog - Yamaguchi Stembuilding Class https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1608575273345-NU6SFCMZTANEYBX20FSR/PXL_20201211_191800463.jpg Blog - Yamaguchi Stembuilding Class Slitting the stem clamp. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1608593737063-KDT2HPVYQQADYI6YI45L/IMG_4504.jpg Blog - Yamaguchi Stembuilding Class Facing the steering tube clamp. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1608574318678-UFFMEKSDPWWPGOHKPM97/PXL_20201205_235437302.jpg Blog - Yamaguchi Stembuilding Class Raw fillet welds on the stem. https://www.steubengineer.com/blog/yamaguchi-framebuilding-school-day-5-ex6ez-e4ns5-sjaf4-m4fhj-5t2da-f7pdc-7c2k3 monthly 0.5 2021-01-21 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1611202882034-CN7XNXBN6SXKQURR4MWY/PXL_20201227_181704484.jpg Blog - Custom Bicycle Build - Part 12 They usually work on heavier projects in this shop. Dad’s CAT 972 masses about 24,800 kg. https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1611203174216-5CBLNJ7HXTIRNWPYUJI7/PXL_20201227_193521696.jpg Blog - Custom Bicycle Build - Part 12 The frame set up for finishing work. Total mass less than 2 kilos! https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1611203821206-VQF6FBH97JB6Q1Q0FDB3/PXL_20210111_221041763.MP.jpg Blog - Custom Bicycle Build - Part 12 Burnished frame ready for component assembly! https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1611203580293-UI5W7Y3V82FY023ZAAKX/PXL_20201228_214105720.jpg Blog - Custom Bicycle Build - Part 12 Filing the welds on the rear brake bridge. The left-hand side has been filed smooth and tangent. The right-hand side still needs work… https://www.steubengineer.com/blog/tag/Cycling monthly 0.5 https://www.steubengineer.com/blog/tag/Welding monthly 0.5 https://www.steubengineer.com/blog/tag/What+the+fork%3F monthly 0.5 https://www.steubengineer.com/blog/tag/Machining monthly 0.5 https://www.steubengineer.com/blog/tag/Tools monthly 0.5 https://www.steubengineer.com/blog/tag/Science+as+Art monthly 0.5 https://www.steubengineer.com/blog/tag/Polishing monthly 0.5 https://www.steubengineer.com/blog/tag/Brazing monthly 0.5 https://www.steubengineer.com/blog/tag/What+is+flux+anyway%3F monthly 0.5 https://www.steubengineer.com/blog/tag/Stembuilding monthly 0.5 https://www.steubengineer.com/blog/tag/Tooling monthly 0.5 https://www.steubengineer.com/blog/tag/Heavy+Metal monthly 0.5 https://www.steubengineer.com/blog/tag/Drafting monthly 0.5 https://www.steubengineer.com/blog/tag/Precision monthly 0.5 https://www.steubengineer.com/blog/tag/Yamaguchi monthly 0.5 https://www.steubengineer.com/blog/tag/Framebuilding monthly 0.5 https://www.steubengineer.com/blog/tag/Tubes monthly 0.5 https://www.steubengineer.com/blog/tag/Brazen+Fools monthly 0.5 https://www.steubengineer.com/blog/tag/Finishing monthly 0.5 https://www.steubengineer.com/contact daily 0.75 2024-02-16 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606529364927-LNULJNSQYCZVHKZSMMBB/icosahedronrender2.png Contact - Contact Information Dr. John Steuben Code 6394 Washington DC 20375 Email (Work) john.steuben@nrl.navy.mil (Personal) steubengineer@gmail.com Links GitHub Google Scholar Research Gate ORCiD https://www.steubengineer.com/home daily 1.0 2020-11-29 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606172801274-X75BD98VAEL5R9IBRJBF/steuben_photo_2020_v3.jpg Home - Hi, I’m John Steuben! I’m a material scientist, mechanical engineer, and robotics designer. My work spans a wide range of topics, from theoretical development, through computational models and physical experiments, all the way to practical hardware and software deployment. I’m currently plying my trade at the U.S. Naval Research Laboratory, in Washington DC. An overview of my research work can be found here. Outside of work, I’m an avid cyclist, a lover of the outdoors, and a practitioner of the mechanical arts. A blog of my adventures in these pursuits can be found here. If you’d like to know more about any of my work, or would like a PDF of any of my papers, please contact me! https://www.steubengineer.com/pagecv daily 0.75 2024-01-21 https://images.squarespace-cdn.com/content/v1/5e9ce153adeaff0b2e3fbdff/1606622925272-L8QF0OOXEO4HY0GAQEFI/cannondale2.jpg CV - Curriculum Vitae The most recent version of my CV (Q1 ‘24) can be downloaded here. Almost all of my publications are listed on Google Scholar. PDF copies of many of them are available on Research Gate. If you’d like a copy of any publication, please contact me. https://www.steubengineer.com/research daily 0.75 2020-11-29 https://www.steubengineer.com/research/multiphysics-discrete-element-method monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Multiphysics Discrete Element Method Snazzy Image: Caption Text https://www.steubengineer.com/research/implicit-slicing-for-additive-manufacturing monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Implicit Slicing for Additive Manufacturing Snazzy Image: Caption Text https://www.steubengineer.com/research/enriched-analytic-for-am monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Enriched Analytical Solution Method for AM Snazzy Image: Caption Text https://www.steubengineer.com/research/topology-optimization-pressure-vessel monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Topology Optimization of Conformal Pressure Vessels Snazzy Image: Caption Text https://www.steubengineer.com/research/triaxial-fatigue-test-system monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Triaxial Fatigue Test System Snazzy Image: Caption Text https://www.steubengineer.com/research/six-axis-material-testing-system monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Six-Axis Hexapod Material Testing System Snazzy Image: Caption Text https://www.steubengineer.com/research/material-defect-interaction-physics monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Material-Defect Interaction Physics Snazzy Image: Caption Text https://www.steubengineer.com/research/open-utm monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Open Uniaxial Test Machine (OpenUTM) Snazzy Image: Caption Text https://www.steubengineer.com/research/inverse-methods-material-characterization monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Inverse Methods for Material Characterization Snazzy Image: Caption Text https://www.steubengineer.com/research/robust-engineering-design-optimization monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Robust Engineering Design Optimization Snazzy Image: Caption Text https://www.steubengineer.com/research/nurbs-surrogate-models-design-optimization monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - NURBs Surrogate Models for Design Optimization Snazzy Image: Caption Text https://www.steubengineer.com/research/computational-multiphysics monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Computational Multiphysics Modeling Snazzy Image: Caption Text https://www.steubengineer.com/research/redundant-robot-kinematics-path-planning monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Redundant Robot Kinematics and Path Planning Snazzy Image: Caption Text https://www.steubengineer.com/research/additive-cartography monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Additive Cartography Snazzy Image: Caption Text https://www.steubengineer.com/research/cellular-substructures-stainless-steel monthly 0.5 2020-11-28 https://images.squarespace-cdn.com/content/v1/5ec321c2af33de48734cc929/1589847755342-LDY808BYOXXO2GNHH6A2/image-asset.jpeg Research - Origins of Cellular Substructures in 316 Stainless Steel Snazzy Image: Caption Text