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Question/problems about decanting spray paint

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  • Member since
    December 2005
  • From: Syracuse, NY
Posted by lexesbenz on Wednesday, June 11, 2008 5:13 PM

Gamera has a really good tutorial here.

 

http://www.gamerabaenre.com/decanting.htm
The flying hamster of doom rains coconuts on your pitiful city!!!!
  • Member since
    January 2007
Posted by the doog on Monday, June 2, 2008 1:12 AM

Thanks alot guys, for your help and suggestions; it seems to be settled down now! Smile [:)]

 

  • Member since
    October 2005
  • From: Maryland
Posted by usmc1371 on Sunday, June 1, 2008 8:20 PM
 Wingman_kz wrote:

That's a normal reaction. You're doing the right thing by leaving the cap loose, it needs to gas out. You can speed the process by stirring it.

Ditto for me.  Just be careful the first time you put the stirrer in the bottle.  It will foam up real quick.

Jesse

  • Member since
    December 2006
Posted by marioc on Sunday, June 1, 2008 9:28 AM

I agree with all the other posts that's a normal reaction.

I have tried successfully adding several drops of cellulose thinner which low the surface tension and let the gases goes faster.

Mario Covalski Editor http://www.modelersite.com
  • Member since
    January 2007
Posted by the doog on Thursday, May 29, 2008 10:37 PM

Thanks, guys! And "wingman"--that's great information to know! I used the White primer this morning and it didn't foam, so I'm pretty happy about it. I'm relieved to hear that I didn't just waste two $8.00 cans of Tamiya primer!

Thanks all! Big Smile [:D]

  • Member since
    March 2003
  • From: Virginia
Posted by Wingman_kz on Thursday, May 29, 2008 10:28 PM

That's a normal reaction. You're doing the right thing by leaving the cap loose, it needs to gas out. You can speed the process by stirring it. You might notice the jar/bottle will get cooler/cold when you stir, when it stops doing that it's probably ok to spray. I usually let it set for a day or so before use. I'll tighten the cap and give it a little shake, loosen the cap slowly, if it doesn't have any pressure then I'll use it.

I've seen some people say that they decant directly into an airbrush bottle and shoot it immediately. That's what I did the first time and the paint foamed on the model. I freaked out 'cause I had no idea what was going on. I've tried a couple times since with different paints just out of curiosity and it always does the same thing, it foams.

BTW, I have a couple bottles of Krylon yellow I decanted over three years ago that's still good. But if you let it set for a long time you might want to strain it before spraying in case there's any clumps.

Tony

            

  • Member since
    May 2005
  • From: Left forever
Posted by Bgrigg on Thursday, May 29, 2008 10:15 PM

Yeah, leaving them with the lids off for a couple of hours is what you need to do. I would also only decant what you think you need each time and toss the excess.

No one had a video camera going, eh? Another premiere You Tube moment lost! 

So long folks!

  • Member since
    November 2006
Posted by Mike H. on Thursday, May 29, 2008 7:37 PM
I've decanted paint in the past and I usually allowed it to stay open and de-gas for a couple hours in an open area.  I've not had a problem with gases building up if you let the paint "breath" well before sealing it.
  • Member since
    January 2007
Question/problems about decanting spray paint
Posted by the doog on Thursday, May 29, 2008 6:48 PM

Hi guys

I didn't like the lack of control with Tamiya's spray cans, so I decanted three cans; two primer cans, and a colored one. I used a straw and filled three large Tamiya jars, and put them aside.

This morning, I went to use the white primer, and when I opened it, it sprayed out like as if it was a shaken can of soda! It got all over my hands--man; is that stuff hard to get off!  The same thing happened to each of the other bottles (I was prepared for the other two with paper towels around the lids)

I've left the lids slightly loose now, figuring that there must be some residual gasses to disperse, but I don't want to just have to leave them that way; can anyone give me some info on what the deal is here? Am I going to have to expect that if I close up those bottles that the gasses are going to continue to build inside them, or will they eventually stabilize?

Should you only decant paint immediately before using it in your airbrush, and not try to save it? 

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