Originally Posted by
tetralite
I'm doing the CNC conversion as per Ron Steele's plans for the 7x10, 7x12 or 7x14 mini lathe. These plans specify a lead screw from McMaster.com (part #6350K15). This is a 3/8" diameter, 0.5" pitch, 4-start stainless (303) ball screw. When you buy it from McMaster.com you have to buy a 72" length minimum and it costs $123.14 plus shipping. So I bought one along with the matching wear compensating nut (part #6350K55) and since I am converting my single 7x12 lathe, the plans call for just a 20" length of the screw. The result is that I now have 52" of leftover, brand new ball screw stock. So if anyone else out there is doing a similar conversion and you don't want to buy extra lead screw stock I am willing to sell you all or part of my leftovers at the same price per inch that I paid ($1.71/inch) plus shipping (probably about $10 for shipping). This will save you from having to lay out over $125 for the screw. You can view the specs for this lead screw by entering the part number in the search on the McMaster.com website. Send me a message or respond to this post to contact me.