Todays Project - What did you do today?

[PixMan]

Today's project, another motorcycle part out of stainless steel. It's a special motor mount bolt that holds the motor in the frame of Neil's YSR50 project, don't know anymore than that about it. Here's the existing, perhaps 23 year old part. He wants all as-new shiny bits again.



First step was to take the 3/4" stock and turn for the square and for the M10x1,25 thread.



That done, remove the collet closer assembly from the back end of the spindle, change gears for metric threading. O had turned the OD to .394 (nominal), will let the full profile lay-down threading insert bring in the OD to final size as the pitch diameter is reached.



Good thread, right to size according to my thread pitch micrometer. Remove from lathe without cutting off from bar of stock.
Now over to the milling machine, remove the Walter dividing head, mount and indicate the Kurt vise. Using the square 5C collet block and a 3/8" solid carbide end mill, I milled the square to 10mm.



Back to the lathe, change the gears back for "inch" operation, remove 3-jaw chuck and reinstall the collet closer assembly. Plunge the cutoff tool 1/2 way in, radius the major OD of the part, file smooth and cutoff. Turn it around in a (snug) 15/32" collet and clean the face, polish. Done!




Now the painful part: I sent Neil a text with a photo of the finished piece, he replied back that he needs TWO of them. :(

Nuts.