another resin mold

[riverrock]

from a sand castle kit .

[Drummond Island Rocks]

I like it. So do you pour all of the resin in then let rocks sink into it or do you add rocks as you pour it in?
Any coating sprayed on the plastic to help release the resin after it is cured?

I assume you used something like this and just held it in place upside down while pouring


Chuck

[riverrock]

I have been putting the rocks first then the resin , I make sure I stir it up a bit.
I think one you put the bbq lighter to get rid of the bubbles it makes the resin fill in the spaces.
and yes a cheap mold like that and I grease it with olive oil just a little bit.
now after it sits for 24 hrs I use a knife around the edges to create a small air pocket to release it from the mold.
Now I have been talking to someone else on the board about this , he can put his two cents in if he wants.
We both have had some come out foggy or yellow , not sure if I did not mix the two parts long enough or heat it long enough .
Trying different ways .
Got some more going today.
I have been using easy cast resin .

[snowmom]

too cute! Clever to use sand molds! Mom worked at the "Cast O Lite " factory when I was a kid, one of the first epoxy type resins. She brought it home and I spent a lot of my high school days playing with resin casting... we would tap the mold on the work table to get the bubbles to come out, and use a greased tooth pick or pin to poke out reluctant bubbles before it set. I don't know about the lighter trick, please explain? We used a light coat of Vaseline as a mold release in the "olden days" (high school was a long long time ago.) Yellowing resin back then was usually due to too much hardener.
we would cut toilet paper tubes and grease the insides, put them on waxed paper and make disks about 1/2 inch thick, great for drilling a hole in and making key chains or light catchers. You have given me a flashback... blast from the past. thanks for the post.

[riverrock]

snowmom I saw a YouTube video that some artist dude you does really nice resin artwork and sell his still for big $$$. And he uses a torch to get rid of the bubbles. As well as guys who make resin counter tops .
I don't own a torch so the BBQ lighter does the trick for me. Mind you if I was smart I would just go buy one instead of the BBQ lighter, but I do buy the refillable ones.