- I am working on the reconstruction of a SB 10K
one small milestone....
I manufactured a new tailstock feed screw.
When I got my lathe, the tailstock handle was smashed. I found a replacement on ebay. The tapered pin hole didn`t match with the original feed screw hole.
There was also a lot of wear on the threads. the decision was not hard: manufacture an new screw.
Something interesting I noted: Although it looks like a ACME screw 1/2-10 LH the screw profile is slightly different on the original part the root of the thread is slightly rounded. I manufactured the new screw with the sntandard ACME profile. (some backlash because of the wear on the tailstock quill threads)
My part is made of mild steel. Anybody has a better suggestion for a better steel (alloy steel) with good machining capability? (eventually, I will make a better one) and I also need to cut new cross feed screw.)
(the cross feed screws are real ACME profile)