[DeTomaso] Powdercoating Original Rims

[MikeLDrew at aol.com]

In a message dated 8/2/13 9 05 9, steve at snclocks.com writes:


> In as much as I plan to go back to original rims under 5332 I am figuring 
> I
> will be having a set powder coated.  Any words of wisdom on this effort? 
> 
>>>When faced with the need to refinish wheels, I chose to have mine 
painted.   It was remarkably expensive, over $600.   

Powdercoating is certainly a viable option, as long as it's done correctly, 
but many powdercoaters are unfamiliar with the unique characteristics of 
magnesium.   Specifically, it can out-gas, leading to bubbles under the 
finish.   The best thing to do is to have the wheels stripped, then place the bare 
wheels in the powdercoating oven at the end of the day and bring them fully 
up to temperature, and allow to cool slowly overnight.   Then powdercoat 
them the next day.


> > I
> assume one does not coat the seating faces for the lug nuts. 
> 
>>>Yes, true--the magnesium wheels have steel inserts where they engage the 
studs, and those inserts need to be masked off.   A good powdercoater will 
know to do this instinctively but it bears mentioning.


> > How about
> between the beads - the area that will see the inside of the tire? 
> 
>>>The whole wheel, including the side that faces the hub, should be 
coated.   Everything except the steel inserts...


> > Should
> one be using a specialist known to this group, or will local 
> powder-coaters
> work?
> 
>>>I'd try to use one that had experience with wheels, and magnesium 
experience is a definite plus!

Mike