On Thu, 17 Aug 2017 13:06:34 -0700 (PDT), jbeattie
wrote:

On Thursday, August 17, 2017 at 10:50:48 AM UTC-7, Ian Field wrote:
"John B." wrote in message
...
On Wed, 16 Aug 2017 21:39:23 +0100, "Ian Field"
wrote:



"Joerg" wrote in message
...
On 2017-08-16 06:53, wrote:
The colors and consistencies you can get in powder coating is
fantastic. I found some slightly metallic very bright blue.

The problem is that powder coaters are not bicycle painters so the
rear dropouts that are chromed will be covered as well as everything
else.

So does anyone have an idea of how to remove the powder coating from
the dropouts without destroying the chrome at the same time?


AFAIK it's done the traditional way:

https://itstillruns.com/remove-paint...e-4809619.html

Paint is totally different to powder coat, AFAIK: traditional masking will
tend to rip off a strip of coating where you want it to stay.

Powder coating is most often done electrostatically - I vaguely remember
something about painting melted wax onto the chrome bits. The right kind
of
wax is an insulator that doesn't electrostatically hold the sprayed on
powder - or not so much anyway.

The end result still needs a bit of finishing round the edges - but you
shouldn't end up having to strip it back and start over.

I usually have bike frames powder coated in two or more colors and the
people that do it here are quite adept at masking. Whether to cover
chrome plating or just where two colors join. I'm told that they use a
"special masking tape" that will withstand the oven temperature.

Probably OK if you apply it thin enough, but that stuff has tensile
strength.

I wasn't going to say anything for fear of sounding like a weight-weenie, but
powder paint is heavy. I had a frame painted, and the job was partly
botched, so they put on a second coat. Crap man, two coats probably
added a pound to the frame.

-- Jay Beattie.

I thought the same and weighed a frame before and after with an
electronic scale that weighs to 0.001 Kg. (about 0.04 Ounce) and there
was no difference in the scale reading :-)

--
Cheers,

John B.