Looking good for some really tight pitches. As for delrin, I say no.
Threads are to shallow to give it anything to pull against. I would get
a brass nut and split it for the job Then on the screw, I would run a
tap down it and then polish it with a wire brush wheel.
Good Luck
Mike OK
On 9/23/2024 4:02 PM, cdkr...@gmail.com wrote:
Ordered a 3/4-16 x 36" UNF all thread to alternate with the 4 TPI
stock feed screw when needed. The original screw is 37 1/4" long, so
I turned some plugs and threaded them into the ends of the 3/4" screw.
They swap out very quickly and the larger diameter doesn't present any
problems. Yet. Now making the split nut. This will make for some
nice options: a pitch suitable for feeding heavy cuts like "rounding"
the blank, quite a range of wooden threads, more accurate positioning
for box joints and dovetails. These are 60° tapered threads so any
backlash can be eliminated by more pressure on the split nut. I am
concerned that the zinc plating has accentuated any thread milling
roughness, so I may run a file over it while spinning on my lathe.
IMG_20240923_153359588.jpg
DanK
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