Shaper Rub Collars

michaeltoc · Post by **michaeltoc** » Tue Mar 01, 2011 2:51 pm

Has anyone used ball bearings instead of the shaper rub collars? Any advantage?

SDSSmith · Post by **SDSSmith** » Tue Mar 01, 2011 3:41 pm

michaeltoc wrote:Has anyone used ball bearings instead of the shaper rub collars? Any advantage?

I have not personally used rub collars with ball bearings with my shaper but I would expect that you would reduce the possibility of having the collar burn the wood. I noticed that one of the accessories offered for the speed increaser is the ball bearing shaper spindle and part of the spiel is to "end burning". This is also the case with router bits (ball bearing vs. rub).

michaeltoc · Post by **michaeltoc** » Tue Mar 01, 2011 5:31 pm

Thanks! I hadn't looked there as I don't have the speed increaser. My concern was using rub collars with the PowerPro's higher speeds - and that certainly answers the question.

pennview · Post by **pennview** » Wed Mar 02, 2011 10:44 am

Here is a set of shaper rub collars that were sold by AMT when they were selling woodworking tools some years back. The bearing itself is 1/2" bore and 1 1/8" outside diameter. You can stack the steel collars on the bearing, giving you additional outside diameters of 1 3/8, 1 5/8, and 1 7/8". The washers act as keepers to hold the bearing and collars together. I don't know if anyone still sells a set like this, but Grizzly sells individual bearings or you can buy them in a set from them.

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pennview · Post by **pennview** » Wed Mar 02, 2011 10:48 am

I should have added that if you use steel rub collars, you'll burn the wood the the collar is rubbing against. With bearings, you won't have that problem.

Ed in Tampa · Post by **Ed in Tampa** » Wed Mar 02, 2011 12:22 pm

I use rub collars and have found if I use beeswax on the collar they are less likely to burn the wood. Caution here do not use petro based wax! It will mark the wood.