[TheForge] Aluminium

[Ron Childers]

Yes, be careful with heat on aluminum. A friend had a baked-on fancy paint
job on a scuba tank done at a body shop. The heat lamp was apparently hot
enough to alter the structural integrity of the metal and it exploded during
the filling process. It caused serious bodily injury. Ron C

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Andrew Vida
Sent: Tuesday, May 27, 2008 8:03 PM
To: Blacksmithing List Sponsored by ABANA
Subject: Re: [TheForge] Aluminium




Mark A. Pesetsky wrote:
> I am building a vintage CANNONDALE bike w/the newest latest in 
> components.
 > Stripped the paint and going to do a 600 grit finish. Don't want it 
shiny,
 > want it w/that hand sanded matte look...
> 

	Then bead blast it.  That will provide a very nice matte finish.
You 
could then have the frame anodized, which will eliminate corrosion 
concerns.  You can have it anodized in all manner of cool colors, too. :)

	Be careful with heat.  You don't want to draw the temper, especially
in 
a critically stressed area such as the head tube.  I was once on a 
double metric (130 miler) through Marin county and some poor slob had 
their head tube leave the scene and they did a face-plant into the side 
of the mountain.  Very nasty result, I might add.  Never found out if 
they lived or died - it was THAT bad.  Be careful.
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