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A4 Shim Lapping ?

Posted: Wed Jul 04, 2018 4:40 pm
Author: cancunia
Anyone know if the stock shims are made of tool steel or simply case hardened? I have just 1 shim that needs about 0.03 - 0.05 mm lapped to bring it into spec so am thinking about some grinding paste on a piece of glass & lapping the underside.

Re: A4 Shim Lapping ?

Posted: Wed Jul 04, 2018 4:45 pm
Author: Pigford
Case hardened

Re: A4 Shim Lapping ?

Posted: Wed Jul 04, 2018 4:46 pm
Author: Pigford
Members get access to a "shim-swap" service :D

Re: A4 Shim Lapping ?

Posted: Wed Jul 04, 2018 4:57 pm
Author: PAULJAC47
As Mark says,case hardened ,not a good idea to remove material or grind asking for trouble..

Re: A4 Shim Lapping ?

Posted: Wed Jul 04, 2018 5:21 pm
Author: engz1b
lapping will be fine , you will only about 1 thou off each side , case hardening will be a lot deeper, probably 10- 15 thou per side