Painting tubes - again

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manatee

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Joined
Jul 6, 2009
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99
Location
Florida
I have had two castings ruined today because of paint problems. The paint doesn't seem to stick to the tubes properly. I sanded the tubes and I have tried spray paint and brush acrylic (from Michael's). They both came loose from the tubes. What paint do you guys use? Thanks Bob
 
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I used to paint the tubes also, but sometimes I could still see the glue through the blank if it was unusually translucent. I've lately been painting the inside of the blanks with testors model paint, and that seems to work much better.
Jim
 
You might send a PM to Curtis (mesquite man). He turned me on to a special acrylic paint that gives better coverage and fewer issues than any other reverse and tube paint I have used.

I am out of it and I can't remember the name or where I got it. Kinda of a goofy name, but great paint!

Edit: I just found the paint. It's called cerambcoat and it works great! One coat covers even Bakelite.
 
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Andy is it Ceramcoat or Cerambcoat? I have some of the Ceramcoat and it does work great. I stole it from my wife's collection (but please no one tell ok?)
 
manatee said:
I have had two castings ruined today because of paint problems. The paint doesn't seem to stick to the tubes properly. I sanded the tubes and I have tried spray paint and brush acrylic (from Michael's). They both came loose from the tubes. What paint do you guys use? Thanks Bob
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Bob:
I forgot to ask. What kind of glue do you use with reverse paint?

When I reverse paint, I use 5 minute epoxy. It just works better for me with paint. CA sorta "melts" the paint, making the tube slick.

This is not a rule "written in stone" it just works better for me, YMMV.
 
Andy, Im casting the painted tubes in resin and the paint seems to be dissolving or smudging in some areas. My shop temp is between 65 and 70 degrees so I don't think the cold weather had anything to do with it. I will try the Ceramcoat this week.
 
How long are you letting the paint dry? I use the $1 cans of spray paint from Walley World. I paint both the tubes and the inside of the blank and let them dry overnight before I glue the tubes in with thick CA. So far I've had no problems. YMMV.
 
Sometimes it is the paint itself. Heat created by the chemical reaction when the resin is curing has been known to cause the paint to bubble/dissolve as well. However, high-heat engine paint should solve that or doing what everyone else is suggesting...your problem should be an easy fix though...
 
Monty said:
How long are you letting the paint dry? I use the $1 cans of spray paint from Walley World. I paint both the tubes and the inside of the blank and let them dry overnight before I glue the tubes in with thick CA. So far I've had no problems. YMMV.
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Ditto Monty!
 
I let the paint dry overnight most of the time. One tube was brushed on acrylic and the other Krylon spray and I had problems with both. I was doing a 2 pour cast and the first pour may not have been totally cured and the blanks stuck to it. I may have caused the problem by moving the blanks to release bubbles. I have some new resin saving mold I will try next.
 
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