Garage of Evil!!

I am needing to make a bunch of concrete skulls to put on our haunted trail. Can anyone tell me a simple way to make molds to pour the concrete into and an easy way to get them out? I tried to make one with a plastic skull by cutting the skull in half and using a releasing agent like you use for clay castings. I then duct taped the skull back together and poured the cement into the back where we drilled lled out a hole. The cement leaked out the front seams some, and it took it 2 days to set. Then it was almost impossible to get the mold off. Please HELP!!!

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hi Amy, I am trying to fill clay molds and have come upon the same problem. I talked to a concrete guy and he suggested i try  Vaseline. U might also try hot glue and tape for the seams,  concrete gets hot as it cures, but i think i can melt it off if it sticks. Can u cut your mold on the side than your seam will not show. I have not started my projects yet, they are small trees. would like to see if it works keep me posted. Lee Kelly

Contact this seller on ebay.  I bought an adult size mold from him and I can make plaster and cement skulls all day.

Thank you Michelle!!

Before I forget- this is the instructions he gave me for his mold.

        The single, biggest problem that people run into with latex molds is overfilling. The mold is a balloon and will stretch under the weight of wet cement. That is also very hard on the mold
 It is very easy to use latex molds, without a standard backing. Just use dry sand!
You first put enough media ( I use cement, because it lasts, even out in the weather ! ) into the mold, to cover the bottom. Then shake, jiggle and squeeze the mold to get it into the small detail of the mold and to get the air bubbles out of the media. Air bubbles in your media will show up as pin holes in your casting.
Then, hold the mold inside of a container deep enough to hold it, and sweep dry sand in around it to support it. The sand outside the mold should remain at a slightly lower level than the media inside. Then, add material inside and sweep in more dry sand outside. Repeat, until the mold is almost full. Mold detail must be tended to as you fill the mold, air out, media in.
Then, the air bubbles will have to be worked up and out of the media. Use something small enough to reach down inside of the mold. You can poke into the mold to release air. work the media up and down near the outside of the mold, this helps to scrape bubbles off of the mold and up out of the mix.
Fill the mold to the desired level and try to release as much air as you can.
When casting with plaster, I have taken a board large enough to cover the top of the bucket, with a hole drilled into it for the end of the shop vac. A vacuum will cause any air in the plaster to rise to the top. That seems to work for 90% of the bubbles.
Then, allow the casting to cure. In the case of cement, it will become concrete in 3 days. After 3 days, the longer you wait to pull the casting, the harder the casting will be to remove. Use no release agent on the mold. At least not when casting with simple media.   I understand that resin casting requires a release agent, but I use only concrete!
I hope this helps.  If you let him know what you want he can make it.  

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