painting small steel frame damages

On Sat, 06 May 2017 15:21:27 +0700, John B Slocomb
wrote:

On Fri, 5 May 2017 22:40:05 -0400, Frank Krygowski
wrote:

On 5/5/2017 10:31 PM, wrote:
On Friday, May 5, 2017 at 6:44:59 PM UTC-7, John B Slocomb wrote:
On Fri, 5 May 2017 07:42:41 -0700 (PDT), wrote:

On Thursday, May 4, 2017 at 5:52:15 PM UTC-7, wrote:
Emmanuel, I'm afraid I am not big on repairing chips in a frame's paint. When the bike gets too chipped and has too many rust spots to suit me, I strip the components off the frame, sandblast it and paint it with single-stage automotive paint. Although 2-stage (clear coat) jobs are popular these days, I think clear coat would look obviously inauthentic. IMHO, single stage paint more closely duplicates the original finish.

You need a fairly good-sized air compressor to run a sandblaster. I use a Campbell Hausfeld 2-stage model that delivers about 18 SCFM and has an 80-gallon air tank. Just about any portable, pressure-fed sandblaster will do the job. Avoid siphon-fed blasters.

Almost any city has locations that will sandblast and powdercoat a frame and fork. This procedure is dirt cheap and the finish extremely long lasting if not the height of glossy finishes.

The shop I use does a two coat powder coating with "clear coat" as the
second layer. It does produce a fairly shiny coating although not as
glossy as "22 coats of hand rubbed lacquer".

I live one mile away from CycleArt. I dropped in and asked what he wanted for a paint job and he said $1200 with decals and a minimum of two months lead. The powder coat complete was $50 the next day.

That's pretty interesting. About ten years ago, I welded up some nice
ornamental railings for our indoor stairs and outdoor balcony. I looked
into powder coating, and while I don't remember the price, I decided it
was exorbitant. It was much, much higher than $50!


I just built a wheel truing stand. Powder coating it cost me 400 baht
or $11 at currant exchange rates. I asked about powder coating the
entire rear bumper for my pickup and was told, maybe 3000 baht (about
$85 dollars). The bumper is about 5 square feet in area and they
mentioned that they would have to do both sides, so ~10 square feet of
coverage.

I think that the materials are pretty cheap and charges are perhaps
more influenced by how long the job is going to take and how much
space will it take up in the oven, thus limiting how many pieces
can be crammed in. At least back when the shop started powder coating
the owner mentioned how much it cost to run one load through the oven.
Due to reduced environmental regulations etc it will be a LOT cheaper
to do that kind of work in Thailand (assuming from the Baht reference)

On Sat, 06 May 2017 14:03:55 -0400, wrote:

On Sat, 06 May 2017 15:21:27 +0700, John B Slocomb
wrote:

On Fri, 5 May 2017 22:40:05 -0400, Frank Krygowski
wrote:

On 5/5/2017 10:31 PM, wrote:
On Friday, May 5, 2017 at 6:44:59 PM UTC-7, John B Slocomb wrote:
On Fri, 5 May 2017 07:42:41 -0700 (PDT), wrote:

On Thursday, May 4, 2017 at 5:52:15 PM UTC-7, wrote:
Emmanuel, I'm afraid I am not big on repairing chips in a frame's paint. When the bike gets too chipped and has too many rust spots to suit me, I strip the components off the frame, sandblast it and paint it with single-stage automotive paint. Although 2-stage (clear coat) jobs are popular these days, I think clear coat would look obviously inauthentic. IMHO, single stage paint more closely duplicates the original finish.

You need a fairly good-sized air compressor to run a sandblaster. I use a Campbell Hausfeld 2-stage model that delivers about 18 SCFM and has an 80-gallon air tank. Just about any portable, pressure-fed sandblaster will do the job. Avoid siphon-fed blasters.

Almost any city has locations that will sandblast and powdercoat a frame and fork. This procedure is dirt cheap and the finish extremely long lasting if not the height of glossy finishes.

The shop I use does a two coat powder coating with "clear coat" as the
second layer. It does produce a fairly shiny coating although not as
glossy as "22 coats of hand rubbed lacquer".

I live one mile away from CycleArt. I dropped in and asked what he wanted for a paint job and he said $1200 with decals and a minimum of two months lead. The powder coat complete was $50 the next day.

That's pretty interesting. About ten years ago, I welded up some nice
ornamental railings for our indoor stairs and outdoor balcony. I looked
into powder coating, and while I don't remember the price, I decided it
was exorbitant. It was much, much higher than $50!


I just built a wheel truing stand. Powder coating it cost me 400 baht
or $11 at currant exchange rates. I asked about powder coating the
entire rear bumper for my pickup and was told, maybe 3000 baht (about
$85 dollars). The bumper is about 5 square feet in area and they
mentioned that they would have to do both sides, so ~10 square feet of
coverage.

I think that the materials are pretty cheap and charges are perhaps
more influenced by how long the job is going to take and how much
space will it take up in the oven, thus limiting how many pieces
can be crammed in. At least back when the shop started powder coating
the owner mentioned how much it cost to run one load through the oven.


Due to reduced environmental regulations etc it will be a LOT cheaper
to do that kind of work in Thailand (assuming from the Baht reference)

Probably, although I don't know what environmental regulation would
apply.

The shop I use does do their acid dip in a tank with a hood and
exhaust system and their glass bead blasting in a cabinet, except for
big stuff that is done in an enclosed room with an exhaust system. The
actual powder is applied in a sort of cabinet and the work piece is
charged with high voltage to attract the powder so there doesn't seem
to be a lot of over spray.