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I think I'm going to try out decanting spray paint for the first time. Now, I know you have to let it sit for at least a couple of hours and not touch it so it can degas.

But, what I am wondering is does it matter if you use a plastic jar or does it need to be glass? I also ordered a bunch of bendy straws on ebay. Just hope they are the right size as I am going to try this on a tamiya spray can that's half empty. Is there a particular size that you have found to work best? Thanks for reading and any suggestions or helpful tips would be greatly appreciated!

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Here is how I do it. Get a drinking straw and cut a piece about 2” long. Bigger straws work better. Then cut 4 slits at one end about 3/8” long. This results in four tabs. Bend two opposite tabs back and slide the two unbent tabs along the sides of the aerosol head, run a piece of masking tape from one tab around the spray head to the other tab. Then run a narrow piece of tape under the straw and secure to the head and finally one more piece over the straw. This helps to avoid any leaks. I decant into film canisters by sticking the straw into the canister and loosely holding the cap in place.

 

Leave the cap on loosely as the paint has to de-gas. Wait until it is no longer cold to recap it.

 

HTH

 

Bob

Edited by Bob Beary
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Most Straws fit Tamiya Rattle cans well. I add a Blue Tac Seal around the end that connects to the nozzle. This is the easiest and most convenient way to avoid leaks. Spraying into a plastic jar should be no issue but a test first would be advised. Use some Acetone or Lacquer in the container and see what happens... I bought some small containers at the dollar store. Kinda like those rubbermaid food storage containers but much smaller and only hold about 3-4oz. they measure about 1x21/2 and maybe 1in high. They are made from cheap plastic but solvents don't affect them..

Make sure you decant in a well ventilated area or outside. Rattle can vapor as you know is very strong...Let is sit for several hours to a full day before you use it to let all the gases evaporate. The way I like to do it is to set the cap on top with a slight opening for the vapor to escape. Works every time. I also like to add Tamiya Lacquer thinner before I airbrush it onto the model. The Stuff goes on like glass and the only drawback is the color range is not extensive enough...HTH

Edited by viper730
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Thank you all for the replies. Quick question. When the bubbles stop, is the decanted paint fully degassed? Or do I still need to wait a couple more hours just to be on the safe side? Thanks!

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