Subject: RE: powder coating jugs(long)
Author: Ross
Date: May 28, 2005, 9:28 AM
Post ID: 1718939317
They can mask them, they have many different ways to do that. But, I've
seen them screw up. One screw up on the cylinder and its gone.
I have two friends that own chrome shops and one that is considered the
best anodizer in Arizona. (Use to sell chemicals to them for their baths
and WT in a previous life.) I have seen each screw up. Seldom, but they
do. They've done it to me in fact, so I tend to be careful.
These aren't slop shops either, one does the work for two or three major
custom HD builders, and the other can plate anything (he has plated dog
crap just to show it could be done, keeps it in his office). The
anodizer can switch companies in one day, he is that sought after.
The best thing to do at the chrome shops is to give detailed written
instructions. If the parts are to be polished prior to plating, meet
with the polisher and make sure he understands what you want. Prep
(masking & polishing) and plating are separate areas so it's best to
meet with both. If the shop won't let you, don't use them. Polishers
often do the most damage to a part.
With anodizers, same thing.
With powdercoaters, they have to know what to mask off or you'll get
powdercoat where you don't want it, and powdercoat is hard to strip off
anywhere but at the shop that powdercoated it. Get the type and
manufacturer of the powdercoat, this can help later if you need to strip
it. It's probably gotten better since I stopped selling these products.
If you can afford it, go to shops that specialize in motorcycle parts or
restoration, they know what they are doing and what to expect.
And never use a plater that plates in real large tanks. Never. Anodizing
in large tanks is fine, but not plating.
Sorry about adding the chrome platers to the mix, but these shops are
more likely to cause you severe clinical depression.
Regards,
Ross
K. Ross Raymond
Phoenix, AZ, USA
1971 Ambassador LAPD
1975 Norton Interstate (Nearing completion someday)
1969 Triumph T-100 (Project)
1998 Ariel (after the Sq. 4, not the mermaid)
-----Original Message-----
From: AJ Huff [mailto:ajh-@earthlink.net]
Sent: Saturday, May 28, 2005 5:16 AM
To: Loopfram-@topica.com
Subject: RE: powder coating jugs
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Good info Ross. I would have thought they could mask the chrome but
maybe not. If they could, I think it would be a great way to go. Maybe
take your info and ask the shop. Wasn't my question, but thanks for the
great insight. Do you work in that field?
-AJ
Ross wrote:
Anodizing could represent a problem for the cylinders. It is done in a sulfuric acid bath, which would remove the chrome coating. Sand cast aluminum also has to be treated first in a nitric acid and ammonium bifluoride strip (there can be a third component, but I forget what) |
| remove the silica prior to anodizing. This would also remove the |
| coating. Powdercoating can also represent a problem as the coating is quite thick, 5-7 mils if I remember right. And does not do well in touching up. Another possibility would be Gun Kote in gloss black. While the manufacture recommends anodizing, it isn't absolutely necessary. |
| checking, I believe it requires sand blasting at a low psi. After |
| baking at 325 deg F for an hour or so. It puts a very thin coating, a seventh or less that of powdercoating. It can be retouched through sanding and reapplication, but you would have to bake again. I did it on my cast iron cylinders, and it is quite tough and very shiny. It is a grey black rather than a blue black. Finally, the British painted their cast iron cylinders, and aluminum also, with very little heat transfer problems. The Brit guys have done extensive oil temperature testing, and there doesn't seem to be a problem. Guzzis do keep their cool quite well v. the vertical twins. Regards, Ross K. Ross Raymond Phoenix, AZ, USA 1971 Ambassador LAPD 1975 Norton Interstate (Nearing completion someday) 1969 Triumph T-100 (Project) 1998 Ariel (after the Sq. 4, not the mermaid) -----Original Message----- From: AJ Huff [mailto:ajh-@earthlink.net] Sent: Friday, May 27, 2005 7:09 PM To: Loopfram-@topica.com Subject: RE: powder coating jugs I would consider anodizing. I'm pretty sure it can be done. Wide selection of colors. More scratch resistant. Advantage of being mostly |
| permanent. Disadvantage of being mostly permanent. An anodizing shop should be able to tell you if you can or not. scott grupe wrote:
|
|
AJ Huff '71 Ambassador Three Rivers, MI MGNOC# 19917 |
AJ Huff
'71 Ambassador
Three Rivers, MI
MGNOC# 19917
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