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Restoring Exhaust pipes and finned collarpiece

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Athame57:
But how did you get it so smooth, anything rotary?

Oddjob:
I used a Dremel and some small grinding stones, went through a few. After that those little wheels I keep mentioning, used those to remove the grinding marks and slowly smooth it flat. Finally a modified buffing wheel to get the shine. The chromers did nothing, they were satisfied it was as good as it would ever get. They charged me around £5 each to chrome them. So what I lost in time I made up for in money.

Athame57:

--- Quote from: Oddjob on August 10, 2026, 07:02:33 PM ---I used a Dremel and some small grinding stones, went through a few. After that those little wheels I keep mentioning, used those to remove the grinding marks and slowly smooth it flat. Finally a modified buffing wheel to get the shine. The chromers did nothing, they were satisfied it was as good as it would ever get. They charged me around £5 each to chrome them. So what I lost in time I made up for in money.

--- End quote ---
I've never heard of them until now, I think this is now on my bucket list.

Oddjob:
I’ll try and post a link up of those little wheels. I try and post links up where they still use the same colours as I started out with. There are 7 colours in total. Some sets use different colours for the same grade abrasive and it can be confusing if we ain’t all singing off the same hymn sheets. The grades are 80 grit, which is dark green, then 120 grit, dark blue, 220 grit, I say red others say brown, 400 grit, light blue, 600 grit, purple or lilac, 1000 grit, light green and finally 2500 grit, white.

The white is like a pumice stone, ok for very soft metals like gold but not great on alloy but you’ll find a use for them. Dark green is very aggressive and is great at getting rust of parts or cleaning up really scabby alloy.

Bristles go in direction of rotation, 2 on a mandrel works well. Don’t press hard, a light touch is best. I’ve used them to clean stainless steel pans for the wife, polished jewelry with them. The uses are limited to your imagination.

Spitfire:
Strangely enough I came across a lot of multi coloured polishing wheels while tidying my shelf, I vaguely remembered them but could not remember where from so thank you for the last post reminding me which was which.
Those pipe clamps look great, I can remember buying a new one (OEM) for my F1 and when it arrived it was nearly as rough as the one I was replacing, so mine got a coat of high temp aluminium paint in the end.

Cheers

Dennis

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