Reply by 45acpbuilder

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Posted on Getting metal miter guides to slide smoothly on cross cut sled

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49 posts in 3329 days

#1 posted 08-16-2009 01:38 PM

Don, it’s also important to ensure that your miter slots are DEAD FLAT/DEAD STRAIGHT. I used my miter gage to test the slots and found several places where there were little imperfictions in the sides of the slots. I used a Sharpie to black out all the sides of the slots then slid the miter bar back and forth in the slots. The rubbed-off places are high spots. I then touched off the high spots with a flat jeweler’s file and finished up with a piece of 3/4 cold rolled steel and valve grtinding compound. I ended up with slots so flat and straight my dial indicator shows sub-.001 side play and the miter gage will slide across the table top in the slot without ANY catching or binding. When I put my sled together after cleaning up the slots it was glassy smooth. I also experimented with how to mount the runners and having them with the beads inside and opposing is the right way to do it.

-- M1911BLDR

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