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POP Mold Protection?

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Hey guys, curious what if anything you do to protect your POP molds. I've noticed they can be brittle. Obviously you need to seal the cavities for a good pour, but is it advisable to go the extra mile to seal the entire outer surface once it is fully cured?

Probably not worth the time on some molds, but on the good ones perhaps a good coat of Devcon or some type of rubberized coating would help prevent accidental breakage. I saw some spray-on coating in an auto store that might provide some cushioning to the bottom of the mold.

Whaddya think? Sorry if this question has been posted a million times. Connection is slow now, so thread search is iffy.

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Nova, you're right about the Elmer's method being much easier. Guys, if you haven't tried it you should. Hassle free and better. Thanks longhorn.

I was mainly talking about protecting against accidental breakage. I think Fish N Fool's idea is good....I had considered gluing it down to a thin piece of ply. The stuff in the auto store was some type of sprayable undercoating in a can. If I recall it produced a rubberized finish that I thought would be good to prevent slippage on a metal table, etc.

Haven't dropped one yet, but there's a first time for everything.

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Years ago I used plasti dip but I found that it would break down and get greasy when it came in contact with the unheated plastic. I thought about taking cloth and epoxying it to the bottom but never tried it.

I think the pegboard or similar product is a good idea. Don't know if it would help to much if the mold fell from 2 or 3 feet; but it would help with the everyday bumps.

www.novalures.com

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ALex; I used to use epoxy to coat the molds but since we found out about Elmer's glue that's what I've been using. Works great and very easy.

www.novalures.com

Hi,

I make all my molds out of POP and must have missed somthing! what is Elmer's glue? it is most probable that I won't be able to get it in Europe but am goig to the US (DC, TX, NY and CA) on bussines next month so maybe able to pick some up, what type of store sells it?

Cheers,

Simon

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Word to the wise.....If you live out of country and intend to take glue back with you......better off shipping it rather than trying to get on board a plane with it........anything since 9/11 that is in liquid, gel or cream form is confiscated at the security check points.......saw a lady have her jar of peanut butter taken away because it was a cream.....

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Hi,

I make all my molds out of POP and must have missed somthing! what is Elmer's glue? it is most probable that I won't be able to get it in Europe but am goig to the US (DC, TX, NY and CA) on bussines next month so maybe able to pick some up, what type of store sells it?

Cheers,

Simon

Simon, others have identified the Elmer's glue as PVA. Poly-vinyl-acetate or something like that. It is a white all-purpose glue, and can be found everywhere in the US. Kids use it in school for projects, etc. Elmer's is the brand here, not sure what it would be over there. Vodkaman can probably help you identify the comparable brand.

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In England, if you go to any DIY (hardware) store, you will generally find it fairly close to the paints section. It is called PVA on the containers, it is also commonly known as wood glue. It is produced by many companies, none of which I can recall. Most large stores will carry their own brand name PVA for a reduced price.

This stuff is so cheap, as someone else mentioned the other day, it is easy to think, 'well, at that price, it cannot be any good'. For porous materials like wood, it cannot be beaten. Many on TU use it for POP molds, which I will be testing out next week.

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