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Wanted: Boyar-Schultz wheel cover
- Thread starter tcweb
- Start date
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- Tags
- boyar-schultz
- Joined
- May 25, 2016
- Messages
- 181
May be a dumb question…but how did you make a spacer ring that is only 1/16” thick?
I assume you start with some thin wall tubing and set the ID, then turn the OD?
Of course I imagine some 1” strips of shim stock could work as well….
- Joined
- Jan 20, 2016
- Messages
- 174
I had not seen that style dust attachment before; looks like it should work well.
I actually had to make 2 similar spacer rings at the same time. One for the surface grinder high speed head (3.252 OD x 3.125 ID x 1.5 lg), and another to mount a Bridgeport 90° milling attachment to my MSC 8 x 28 knee mill (3.375 OD x 3.150 ID x 2.75 lg). Was able to buy a length of welded tubing drop 3.5 OD x 3-1/16 ID x about 10 inches long.
Started with the larger 90° attachment ring as it was thicker. Since it was still relatively thin wall, and was worried about it coming out round, I cut the 10 inches in half and chucked on about 1 inch of the tube, making sure that I didn't turn any closer than about within an inch of the 3 jaw chuck to try to keep it round. Rough turned the OD +.030, the ID -.030. Maybe because of the welded seam, but it was a couple thou egg-shaped after the roughing. So went +/- .010, then to size ID/OD. When I tried to fit it over the mill quill, it was slightly out of round. Was able to polish it with sandpaper to get it to slip fit.
The surface grinder one I was a bit more cautious about staying round, so I went same +/- .030, then +/- .010, then +/- .005, then to size. Not noticeably out of round.
Slit them both in the surface grinder with a 1/8 cutoff wheel. The grinder ring closed slightly when cut thru, and 90° ring opened up slightly. The 90° ring was an easy tap fit without glue in the attachment, and the surface grinder ring I have to slip over the spindle first, then slide the high speed head over the ring.
here is the milling attachment one installed (bought a cheap Bridgeport draw bar and cut about 4" out of it, welded it back up).
I actually had to make 2 similar spacer rings at the same time. One for the surface grinder high speed head (3.252 OD x 3.125 ID x 1.5 lg), and another to mount a Bridgeport 90° milling attachment to my MSC 8 x 28 knee mill (3.375 OD x 3.150 ID x 2.75 lg). Was able to buy a length of welded tubing drop 3.5 OD x 3-1/16 ID x about 10 inches long.
Started with the larger 90° attachment ring as it was thicker. Since it was still relatively thin wall, and was worried about it coming out round, I cut the 10 inches in half and chucked on about 1 inch of the tube, making sure that I didn't turn any closer than about within an inch of the 3 jaw chuck to try to keep it round. Rough turned the OD +.030, the ID -.030. Maybe because of the welded seam, but it was a couple thou egg-shaped after the roughing. So went +/- .010, then to size ID/OD. When I tried to fit it over the mill quill, it was slightly out of round. Was able to polish it with sandpaper to get it to slip fit.
The surface grinder one I was a bit more cautious about staying round, so I went same +/- .030, then +/- .010, then +/- .005, then to size. Not noticeably out of round.
Slit them both in the surface grinder with a 1/8 cutoff wheel. The grinder ring closed slightly when cut thru, and 90° ring opened up slightly. The 90° ring was an easy tap fit without glue in the attachment, and the surface grinder ring I have to slip over the spindle first, then slide the high speed head over the ring.
here is the milling attachment one installed (bought a cheap Bridgeport draw bar and cut about 4" out of it, welded it back up).
