I am buffing my puma's original magnesium rims to get the sparkle back. The centre of the mag rim is still coarse / rough due to the original sand casting. I dont foresee buffing out all the roughness. I have had some good results using a wire brush on a handheld drill but due to the fact that the magnesium is so soft you easily buff circular marks into the rim. I used a standard wire brush bought at game. Any other ideas or suggestions?
On the edge of the rim I used 400 and then 1200 sandpaper after which I used braso metal polish. I was told to use autosol... will still try that. The finish I got is quite shiny but due to corrosion there is still some pitmarks left in the rim even when fully shiny and buffed up. I suppose I can put it on a lathe and take off a mill or so but the structural integrity of the rim might be jeopardised.
Any comments from any guru out there?
Buffing magnesium
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mahleu
- Oil Stain
- Posts: 154
- Joined: Sun Apr 19, 2009 8:48 am
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- Location: Durban
Re: Buffing magnesium
If I remember chemistry properly (unlikely) then the best use for anything magnesium is to set it alight.
On a more serious note I do remember reading that old magnesium alloy wheels tend to develop hairline cracks over the years so it's probably work having a very close look whilst you clean them. Glass bead blasting should be gentle enough to get all the grot off, then steel wool and brasso or sliver poish.
On a more serious note I do remember reading that old magnesium alloy wheels tend to develop hairline cracks over the years so it's probably work having a very close look whilst you clean them. Glass bead blasting should be gentle enough to get all the grot off, then steel wool and brasso or sliver poish.
Life begins at 80 and ends shortly after in a temporary court on the side of the road.