How can I touch up V blocks?

dimanche 5 octobre 2014

I have a a couple of pairs of V blocks acquired over the years and now that my grinder is operational, I'd like to true them up a little. Putting a piece of ground rod in the V, I can measure both ends with the height gauge and while one is passable (5/10ths difference), a couple are 2 thou difference. (I discovered the error because I tried grinding using the inaccurate V and couldn't work out why I was 2 thou out over the length of the part).



I've racked my brains but can't think of a good way to hold/ support the blocks on the mag chuck so I can get the 2 thou blocks closer to the 5/10th block. The best I can think of is get the 5/10th block, flip it over and shim the high end by 5/10th , take a lick off the base and that should then be spot on. Using that one, nest a 2 thou block in the V and grind the sides of the V which then should take that V back to spot on.

Anyone got any thoughts on that or a better plan?



Michael




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