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A4 Shim Lapping ?

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cancunia
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A4 Shim Lapping ?

#1 PostAuthor: cancunia » Wed Jul 04, 2018 4:40 pm

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.

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Pigford
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Re: A4 Shim Lapping ?

#2 PostAuthor: Pigford » Wed Jul 04, 2018 4:45 pm

Case hardened
And on the 7th day... Zeds were created!

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Pigford
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Re: A4 Shim Lapping ?

#3 PostAuthor: Pigford » Wed Jul 04, 2018 4:46 pm

Members get access to a "shim-swap" service :D
And on the 7th day... Zeds were created!

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PAULJAC47
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Re: A4 Shim Lapping ?

#4 PostAuthor: PAULJAC47 » Wed Jul 04, 2018 4:57 pm

As Mark says,case hardened ,not a good idea to remove material or grind asking for trouble..
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engz1b
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Re: A4 Shim Lapping ?

#5 PostAuthor: engz1b » Wed Jul 04, 2018 5:21 pm

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


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