Search found 12 matches

by chief489
Wed Feb 25, 2026 1:26 pm
Forum: Maintenance and Repair
Topic: Wobble on headstock with scroll chuck
Replies: 21
Views: 74821

Re: Wobble on headstock with scroll chuck


Skip at MKC Tools has been around for a long time. He has done a lot of restorations besides machining hard to find Shopsmith parts mostly for use with the Model 10's. As I understand it he has begun to sell off remaining stock heading towards retiring from his MKC Tools business. It has been ...
by chief489
Wed Feb 25, 2026 2:30 am
Forum: Maintenance and Repair
Topic: Wobble on headstock with scroll chuck
Replies: 21
Views: 74821

Re: Wobble on headstock with scroll chuck

Has anyone bought anything from MKC tools? Have emailed them but no response. https://www.mkctools.com/mark%20v%20parts.htm
by chief489
Mon Feb 23, 2026 12:40 pm
Forum: Maintenance and Repair
Topic: Wobble on headstock with scroll chuck
Replies: 21
Views: 74821

Re: Wobble on headstock with scroll chuck

The more investigation I do, the more I think it's the spindle. Bugger!
by chief489
Mon Feb 23, 2026 5:22 am
Forum: Maintenance and Repair
Topic: Wobble on headstock with scroll chuck
Replies: 21
Views: 74821

Re: Wobble on headstock with scroll chuck

Poly-V and two bearing quill.
by chief489
Sun Feb 22, 2026 2:06 pm
Forum: Maintenance and Repair
Topic: Wobble on headstock with scroll chuck
Replies: 21
Views: 74821

Re: Wobble on headstock with scroll chuck


Check the Drive and Ring attached to the Drive Sleeve Assembly first. It is the nylon part shown on the Drive Sleeve Assembly in the picture below. The arrow points to the location of the ring in the drive. It is a round ring that keeps the drive on the Drive Sleeve Assembly. If the splines in the ...
by chief489
Sun Feb 22, 2026 4:47 am
Forum: Maintenance and Repair
Topic: Parts manufacture
Replies: 3
Views: 29781

Re: Parts manufacture


It would likely be more costly to have a machine shop fabricate one than buying one from Shopsmith. If you have a Mark 5/V with the Poly V Drive, you will only need a new replacement Quill assembly from Shopsmith or buy a used one. If you have an Older, pre-April 1961, Mark 5 with the Gilmer Drive ...
by chief489
Fri Feb 20, 2026 5:14 am
Forum: Maintenance and Repair
Topic: Parts manufacture
Replies: 3
Views: 29781

Parts manufacture

Has anyone ever had any parts for their Mk5 manufactured? Wondering if getting a local business to machine up a new spindle could be an option.
by chief489
Thu Feb 19, 2026 12:35 pm
Forum: Maintenance and Repair
Topic: Wobble on headstock with scroll chuck
Replies: 21
Views: 74821

Re: Wobble on headstock with scroll chuck

Have changed the quill bearings and it's not them. Getting a 0.012"-0.014" runout on the spindle. Will look at the drive assembly next.
by chief489
Wed Feb 18, 2026 5:52 pm
Forum: Maintenance and Repair
Topic: Wobble on headstock with scroll chuck
Replies: 21
Views: 74821

Re: Wobble on headstock with scroll chuck


chief489,

The two videos from James Hopp show the differences between the Quill versions. We could debate single vs. double bearing Quill all day but when all is said and done worn bearings, a worn Ring and Drive on the Drive Sleeve Assembly or even a bent Spindle is a problem and causes runout ...
by chief489
Tue Feb 17, 2026 1:09 pm
Forum: Maintenance and Repair
Topic: Wobble on headstock with scroll chuck
Replies: 21
Views: 74821

Re: Wobble on headstock with scroll chuck

I've tried with the drill chuck and a long drill bit and that seems to have excessive runout too. Guess it may be the bearing. :-(
Have found this useful video but does anyone have suggestions for replacing the bearings without a shop press?
https://www.youtube.com/watch?v=9CJDsykCzoE