Casing polishing

[MJM_58SR]

Hello all
Just wondering if there are any suggestions on polishing some of the casings on my A10.
Likely costs, recommendations, DIY and etc
Thanks
Martyn

[Trev]

Primary cover will polish up quite well, the timing cover might. BSA timing covers (A10 at least) are not very good castings. it's highly likely you will encounter lots of small occlusions that you cannot polish out. The more you try the deeper they will get. I've done about 5 or 6 and that has been the problem on every one of them. Eventually I did manage to find one that was "all rightish". Anyway start with 400 grit, then 800, 1200, and 2000. Polish with Meguires Metalpolysh it takes a long time to get a decent shine. The best polishing cloth I have found is cut up old jeans. Denim performs far better than  any other material.

[geraldhattrick75]

I'm happy doing my bikes myself, and it's very rewarding.

I bought a desk grinder ( https://www.ebay.co.uk/itm/Bench-Grinder-150mm/224189861045?hash=item3432c1ccb5:g:EaAAAOSwxDVfgu4i  )

Then a pair of tails  for the polishing mops (  https://www.ebay.co.uk/itm/Bench-Grinder-150mm/224189861045?hash=item3432c1ccb5:g:EaAAAOSwxDVfgu4i  ) (Make sure they fit the spindles...)

Then a polishing kit ( https://www.ebay.co.uk/itm/Bench-Grinder-150mm/224189861045?hash=item3432c1ccb5:g:EaAAAOSwxDVfgu4i  )

... Might be worth getting one of these: https://www.ebay.co.uk/itm/Black-and-Decker-mouse-sander/124379225107?_trkparms=aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D20131231084308%26meid%3D8d11e88197d345aebb21d9016bb2dea8%26pid%3D100010%26rk%3D5%26rkt%3D12%26sd%3D143782572655%26itm%3D124379225107%26pmt%3D0%26noa%3D1%26pg%3D2047675%26algv%3DDefaultOrganic%26brand%3DBLACK%2BDECKER&_trksid=p2047675.c100010.m2109

You'll be amazed at the results you can get, plus you can make bracket- and polish em up to look fantastic.......

[MJM_58SR]

Thanks for the replies
I am a bit wary of the holes appearing, I've read lots about that!
I've got a bench grinder and the polishing mops etc but never got round to using them (probably due to lack of confidence and the horror stories!
Will have a go on some old cases I've got and see how it goes
Those cases look great by the way!

[LightningAndStarfire]

Be very careful not to get any grinding paste or dust on the inside of any cover that is to come into contact with engine oil. Can shorten the life of bearings and chains significantly. Residues can be there even after washing.