(217/235) 2025-10-07_20-40-39.jpg

4mm turned out to be too small.. a bit of warping

216: Ready to make the spline shaft.
215: Finished arbor
214: Cutting the key in the arbor
213: Turning the arbor for cutting splines
212: Checking out the sine plate
211: Made a nut for it and found a clip that fits. But thread must be damaged..
210: Fine adjust
209: Class X
208: Art supplied this fine adjust - needs a 8-64 thread.
207: Missing parts nightmare.

218: Welding setup
219: Using (miss using?) tread micrometer to get the depth right. Cut depth appears to be about 0.7mm.
220: Hobbing spline setup
221: Finished - there was porosity on the original metal side of the weld.. Hope it works.
222: aluminum tape on gauge block to lap 25-50mm micrometer - didn't work well..
223: Soviet gauge block certificate.
224: Soviet gauge block certificate.
225: Soviet gauge block certificate.
226: Set up double wall tumbler to sand for prep of powder coating.
227: 3mm synthetic sapphire balls want to escape.