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 Post subject: Another paint question
PostPosted: Wed Jun 06, 2012 2:38 pm 
Retro Guru

Joined: Tue Dec 21, 2010 6:31 pm
Posts: 1112
Hello,

Was reading the post about wet painting with Hammerite/Rustoleum and
it got me wondering when people began applying paint by spraying.

I've got a couple of older projects on the go and I've been thinking
it might in some ways be more authentic (and maybe cheaper) to
apply paint with a method other than spraying/enamel/powdercoat.

Johnny


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 Post subject:
PostPosted: Wed Jun 06, 2012 3:07 pm 
rBoTM Winner
rBoTM Winner
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Joined: Tue Aug 26, 2008 7:48 pm
Posts: 455
Location: N. Herts
Hi, I'm also interested in this subject as I have a couple of old projects that I don't want to look new and polished but I would like a reasonable finish and I was considering hand painting with Tekaloid or a boat / tractor enamel paint. Any one had any experience, these seem to work fine with large flat areas but with tubes and corners - any thoughts or direction. Terry


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 Post subject:
PostPosted: Wed Jun 06, 2012 3:40 pm 
Retro Guru
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Joined: Mon Apr 11, 2011 9:51 am
Posts: 1046
Location: W.yorkshire
When did it start? i'd guess the 70s below is a video of how they did it back in the day.

The painting at the factory involves a huge vat of paint and just dipping the frames, then the detailing was done with a fine gold roller which was set in a sort of jig. Jump to 7 minutes, to see the painting process.

http://vimeo.com/39401575


As for applying paint, the saving that you might make by buying it in a tin and applying with a brush must be minimal...i doubt there is a saving when you take into consideration the extra time it takes.

I used to really dread spray painting anything after tales of how the finish was always rubbish, but once you get the hang of it...there is no looking back.


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 Post subject:
PostPosted: Wed Jun 06, 2012 4:43 pm 
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Joined: Fri Sep 25, 2009 3:22 pm
Posts: 419
It's possible to achieve a professional-quality finish with any paint application system - it's just that spraying with modern equipment massively reduces the amount of wetsanding/polishing that you have to do afterwards.

There are two main types of spray paint - traditional cellulose-based paint and modern 2-pack acrylic. With the older softer cellulose paints, wetsanding was quite easy - you could spray the paint out of an old bicycle pump, or even by hand, and it wouldn't take much work to look good. Modern 2-pack acrylic paints are much harder and consequently wetsanding takes a lot longer - but the higher pigment content, combined with modern high-volume-low-pressure spraying equipment, gives such a good finish that much less labour is involved anyway.

If you want to do a lot of frames, you could look into buying a secondhand compressor and a gun - I bought a compressor and gun new from Aldi and it was only £70. The paint is relatively cheap and easy to work with, and unlike 2-pack (which is extremely toxic), you don't need a mask/respirator/ventilated paint booth. The finish, straight from the gun, would be comparable to the old 'dipped' enamel frames; with enough work, the finish can be as good as you're willing to make it!


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 Post subject:
PostPosted: Wed Jun 06, 2012 8:54 pm 
Retro Guru
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Joined: Mon Dec 06, 2010 9:20 pm
Posts: 1087
Location: Chained to the mash tun.
iv'e been looking at this....

http://www.mytenspeeds.com/My_TenSpeeds ... hBrush.htm


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 Post subject:
PostPosted: Wed Jun 06, 2012 10:33 pm 
Retro Guru

Joined: Tue Dec 21, 2010 6:31 pm
Posts: 1112
grumpycommuter wrote:


Yes, I just found that as well. Interesting, but he does go on a bit. I wonder where he finds all the time...


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 Post subject:
PostPosted: Wed Jun 06, 2012 10:40 pm 
Retro Guru

Joined: Fri Sep 25, 2009 3:22 pm
Posts: 419
That's an interesting read - there's no mention of thinning the paint like with the Rustoleum paint jobs I linked to in the other thread.


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