Byrnes Inspired Table Saw – 5a

by John

Just a quickie.

Today I finished the spring loaded belt tensioner.

First I turned a brass rim to fit onto the x2 6mm wide bearings. I turned it with a very slight central bulge, about 0.25 mm, so the belt will run centrally.

I ground the cutter on an 8″ wheel on my RadiusMaster belt sander. This shows the brass being shaped with the form tool with a 0.25mm bulge,
And here it is, Loctited to the bearings. The spring is stretched to 50mm, as determined by yesterday’s experiment.

And it works! Note that the deflected tensioned part of the belt is the return, not the power side of the belt.

I will 3D print a cover to shield the belt and bearings from sawdust.

That’s it. Just a shortie. Can’t seem to rotate the picture.