CRC Silicone Mold Release, 11.5 Wt Oz, Non-Staining, Non-Corrosive, and Fast-Drying, 3.5% Silicone, Easy Part Removal from Molds, Aerosol Spray

Worked great in this mortar concrete mix. The slab came out very easily with only tiny imperfections. This was my first time molding anything and using concrete so I was amazed how well it came out.

This is the second time I've bought this. Works so well.

A must have if your working with epoxy ans your new like us really helped us out allot from sides sticking easy release.

CRC makes great products, but: Product Labeling suggests strongly that this product is for Silicone mold release - Not so - reading product directions on the back of container states clearly “Not for use with silicone molds” -

Used this on silicone molds that are very intricate and hard to unfold. Made unmolding much easier. Does have an odor and cloud flume but it dissipates quickly.

This product works extremely well. I used it when epoxy bedding an item and had zero sticking issues after applying a coat, letting it dry and then applying a second coat before use. It drys pretty fast so doing two coats is no problem. if you are doing relatively small jobs, one cal lasts a long time.

I use this CRC product for my vintage car collection, I spray it on all the parts that may be susceptible to rust or corrosion. It leaves a microscopic silicone coating that drys and is not tacky (like WD-40 or others) and protects parts from corrosion. Also excellent on my motorcycle and bicycle. Try the CRC food grade silicone spray also.

I gave the product 3 stars because I'm not sure if it was the right product for the application (or user error) but it really failed me. I used the product as a mold release on melamine for an epoxy poor and the mold almost completely ruined the project by sticking to the piece. I used it on some samples with mixed success but on the two actual pieces it had a failure rate around 90% on the sides and 50% on the bottom. Would not recommend for those types of projects...

Again I'm using for this my mold casting DIY projects in my studio and OMG it's work perfectly and beyond my expectations.