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Building- slowly- a Classic KMG-Style 2" x 72" Belt Grinder, Part 4:

Belt Grinder

Next up, I needed a way to lock the tool arm in position. The plans call for a simple
pair of locking bolts, so I drilled and tapped the left panel of the arm support.

Belt Grinder

Fit back in place, a spare bolt from the bin now holds the tool arm nice and snugly.

Belt Grinder

Which finally allows us to properly mount and tension a belt for the first time!

Belt Grinder

However, I just did not like that spring arrangement, and decided to redo it.
I got a new, longer section of bar and drilled it to fit in place of the old one.

Belt Grinder

Then, just 'cause I can, I milled the handle end round using the rotary table.

Belt Grinder

Flipping over to the other end, I milled one corner round to the same radius.

Belt Grinder

Moving over to the mill vise, I milled two "pockets" into the remaining corner...

Belt Grinder

Then drilled and countersunk a hole in the middle of the pocket.

Belt Grinder

Finally, I clipped a link from an old scrap of chain, and MIG welded it to the rear bearing support.

Belt Grinder

With a short extension spring from my junk boxes, the newly-installed arm looks, to me, a LOT
better than the original setup. I thought later that putting a ring that would let me use a small
turnbuckle would have been a better idea. That would have allowed both a wider range of
tension adjustment, and easier replacement of the spring, in case this one ever broke.


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Information contained in these pages is for reference and entertainment purposes only.  Our methods are not always the best,
quickest, safest, or even the correct ones. It's up to you to know how to use your own machines and tools.
Keep your fingers away from the spinny blades o' death and you should be all right.