Ever have a fiberglass coupler that was just too tight? Sure we all have. Ive machined them with a diamond tool on a metal lathe, sanded for hours, but I just found the item that is both inexpensive and wonderfully effective.
https://www.harborfreight.com/3-piece-2-inch-x-6-inch-diamond-hone-blocks-36799.html
I drill mounted one of my motor cleaning brushes and snugged the fit with a couple wraps of a towel.
Placed a old dishpan full of water and a dash of soap under the brush/ coupler assembly for use as a carrier/cutting fluid for the diamond block.
I dipped the blue diamond block in the water then placed it lengthwise on the spinning coupler moving it slowly longitudinally along the coupler stopping every 30 seconds or so to wash the diamond block and coupler of removed fiberglass.
The 6 working length reduces dips and high spots on the coupler, and the final finish is ready to use. Suddenly this fitting task was reduced to mere minutes and the finish with the coarse blue diamond block was smooth enough that it was ready to use without going to the finer blocks.
The blue block is way too coarse for kitchen knives, so keep the blue block with your rocketry tools and move the yellow and red diamond blocks to the kitchen where they do an excellent job sharpening cutlery.
John
https://www.harborfreight.com/3-piece-2-inch-x-6-inch-diamond-hone-blocks-36799.html
I drill mounted one of my motor cleaning brushes and snugged the fit with a couple wraps of a towel.
Placed a old dishpan full of water and a dash of soap under the brush/ coupler assembly for use as a carrier/cutting fluid for the diamond block.
I dipped the blue diamond block in the water then placed it lengthwise on the spinning coupler moving it slowly longitudinally along the coupler stopping every 30 seconds or so to wash the diamond block and coupler of removed fiberglass.
The 6 working length reduces dips and high spots on the coupler, and the final finish is ready to use. Suddenly this fitting task was reduced to mere minutes and the finish with the coarse blue diamond block was smooth enough that it was ready to use without going to the finer blocks.
The blue block is way too coarse for kitchen knives, so keep the blue block with your rocketry tools and move the yellow and red diamond blocks to the kitchen where they do an excellent job sharpening cutlery.
John
