I dug up this message from Dave Houser. It addresses the powder coating
temperature issue AND talks about a new 'toy'. I was curious about melting
temps, too. Four hundred degrees seems to be the magic number.
Carol
San antonio
On Mon, 25 Oct 1999 11:19:08 -0400 Chris Heerschap <Heerschap@eng.kns.com>
wrote:
>Powder coating? Correct me if I'm wrong but powder coating applies a
>coat of *plastic powder* to the piece... which is then "cured" by
>melting it onto the piece.
>....Under these circumstances, I can imagine powder coated calipers would
>either melt off or catch fire.
>Date: Mon, 16 Feb 1998 10:28:59 +0000
>From: Dave Houser <mgs4dave@warwick.net>
>X-Mailer: Mozilla 3.0 (Macintosh; I; 68K)
>To: mgs@autox.team.net
>Subject: Powder Coating Demo
>Sender: owner-mgs@autox.team.net
>Reply-To: Dave Houser <mgs4dave@warwick.net>
>
>Folks,
>Just back from the Atlantic City Auction and Flea Market and have to
>tell you about the powder coater Eastwood is selling. No, I'm not at all
>associated, just interested in passing what I saw to the group.
>The system costs about $150 and comes with just about all you need(a
>pressure regulator will be added in the near future, I'm told.)
>There are about 12 colors just now and each bottle of powder is enough
>for covering 10 sq.ft. Starting with a chemically or sandblast cleaned
>piece, attaching a ground wire for the electrostatic charge, a
>slight(2-3.5psi) puff of coating from their gun deposits an even coating
>on the piece, then into an oven(kitchen or small toaster oven) at 400º
>for 10 minutes and you have a shiny, grease, fuel, brake fluid
>impervious item for your car or whatever! Your air supply can be from a
>small air tank!
> What amazed me was a small 2-inch long spring they did that compressed
>without any problem in flexibility or chipping!
>Items like a wire wheel requiring two sides are handled slightly
>differently as far as supporting in the oven when curing, one side at a
>time. Remember, though, if you exceed 400º, the material melts again, so
>no exhaust manifolds, for example.
>My friend and I plan on getting one and perhaps add powder coating to
>our repartoire.
>
>Cheers,
>Dave Houser
>
>
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