Simply Amazing!
I just got around to trying this stuff out last night. I used it on a mold that I usually use pliars and wedges to get the piece out of but this time it popped out with minimal effort.
drawback-the stuff reeks! 
Use your respirator.
Iâm amazed by itâs effectiveness but it does have a nasty smell!
Yeah it has quite a strong smell, but a small sacrifice IMO. If you catch a nice whif of this, especially whenever you open up the bottle, it can knock you out cold. Well not really but it makes me :shock: sometimes.
is it a smooth surface though? Iâm tired of the streaky surface that PVA isâŚcanât make a mold worth my life without it looking like crap.
It doesnât do anything to your mold surface. Imagine putting on water and wiping it dry.
what he said, you wipe it on and it evaporates. Donât know how it works but it does. I was scared that I might ruin the mold the first time but no worries now.
soooooâŚi can use that to cover a model iâm trying to make a mold from??
wooo
credit cards are there for a reason! 
Yup, I use it on plugs too. As long as you donât have a porous surface.
Not wanting to step on toesâŚouch!
But semi permament mold release is for molds only and a waste of good $'s for plugs. PVA would be a better choose on plugs.
It also needs a couple of HOT heat cycles for it really to cook the chemicals into the mold surface and for the mold release to work killer.
We still use PVA for the first couple of parts but we really use hot batches for those first parts too.
It chemical treats the mold surface to prevent cross linking of the part lay up or a chemical barrier just like what wax would do.
I agree that it might be overkill to use this on plugs in some cases. However, sometimes the plug surface has a high gloss and I donât want to lose that by applying PVA. That means I have more work to do on the finish of the mold surface.
JM, this semiperm is a little bit different than the one in the class room. You donât need to âcookâ the mold with this one.
Can I use this product on a mold that has been waxed and produced a couple of parts, or do I need to somehow strip off the wax and start all over ? Really interested.
David Breeze
David, youâll need to clean off any residue on the mold before adding the semi-permanent mold release. You can purchase a mold cleaner chemical or you can just scrub it down real good with soap and warm water. Iâll see if thereâs anything else that you can easily use without purchasing the mold cleaning agent.