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Surface/ Marking out plates

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malcolm hearne20/01/2021 09:42:37
6 forum posts

Can someone tell me why some surface/marking out plates are made with a surface that has been cut into raised squares with a ground finish as opposed to simply ground flat..

I have been given a large plate, 24" x !8" plate of this type and am wondering if it it is worth getting it reground. It would only need a lick over to restore its accuracy.

Malcolm Hearne

Phil P20/01/2021 09:49:16
746 forum posts
181 photos

It sounds like you might have a lapping plate. The grooves are so that the lapping compound has somewhere to go.


Howard Lewis20/01/2021 09:59:45
4397 forum posts
4 photos

+ 1 for a lapping plate.


Tony Pratt 120/01/2021 10:00:46
1403 forum posts
6 photos

lapping plate

Bo'sun20/01/2021 10:05:58
349 forum posts

Lapping plate for me too.

mechman4820/01/2021 19:52:12
2852 forum posts
442 photos

Lapping plate; sometimes come in circular shape.


alan-lloyd20/01/2021 20:05:01
173 forum posts

Lapping plate, used to use one to lap knives for envelope machines

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