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Thread: Waldown lapper and grinder
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16th August 2015, 10:24 PM #16Senior Member
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There was a Centre Lapping Machine like this in RMIT's machine shop when I was doing my apprenticeship, it was used to true up and shift centres after hardening and before grinding.
I worked in the machine shop of one of our airlines where we really could have put one of these to good use in the grinding room but all requests to purchase one fell on deaf ears so we struggled on scraping, grinding, turning and doing whatever was required to get parts running true during overhaul.
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17th August 2015, 02:58 AM #17SENIOR MEMBER
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Yes but they came from an era when everything was built like that
Seriously though, you're lapping a centre, not punching through with a 25 mm morse taper drill bit, so I'm struggling to see why either heavy duty construction or uber slide precision is required. However I've never seen them before, nor do I have any cylindrical grinding experience, so would be grateful for any further info on what is so special about these. Not that I'd be complaining about the price you paid mind you!
Can they drill the centres too, so you can just punch the centre points drop one of the punch marks in the bottom centre and drill the top, or will they only lap an existing centre?
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