How we choose products to include on Resin Obsession

Experimenting with new resin products

Some of the behind the scenes things that happen at Resin Obsession are the times I spend evaluating new products.  I consider many things, including how customers might want to use it, how easy it is to use, can we ship it to you efficiently and affordably, and the product value, just to name a few.  Sometimes, when I work with a product, it is a completely new experience for me, including the new material I worked with this week.  I took some fun time to experiment with a couple new mold making materials and documented the process along the way.

mold making supplies and materials

While I was at the Craft and Hobby show earlier this year, I was introduced to a new, reusable, one-part mold making material.  I came back to the studio with a couple of samples and couldn’t wait to try them out.  A few big things that I liked about this material right away:  it’s reusable and foodsafe.  In addition, it can be used to cast a variety of media.  Besides resin, it can do concrete, fondant and ice just to name a few.





legos in cups for mold making

Instead of resin, I wanted to go all crazy and try something I had never done before.  I wanted to cast food items!  I let my kids’ Legos be the inspiration for these castings.

The way the product works is to melt it in short bursts in the microwave.  Once it is in a liquid form, you pour it into your mold box and allow it to cover the model.





legos floating in mold materials

First thing I learned, if the model isn’t heavy, it will float in the mold material.  For the second try, I used double sided tape to adhere it to the bottom of the cup.





pouring molding material over a lego

Once the material melted (I melted mine in the microwave), I poured it into the cup.  It will set solid in approximately 2 hours.  It’s still rubbery once it’s set, so I was able to reach in the cup, grab and edge and pull it out.






lego chocolate mold

Here is the finished mold.  You can see the non casting side of the mold has a lot of bubbles.  I think this is going to be the nature of the product.  While melting the mold product, you need to take it out of the microwave in intervals and stir it.  It is the consistency of syrup, so it was almost impossible to stir it without introducing bubbles.  My strategy in pouring was to pour it over the model in a deep enough layer that I didn’t have to worry about the bubbles touching the model.  Afterall, it wasn’t like I was going to waste it.  Once you are done casting, you can remelt the mold and use it for something else.

Now the disclaimer — I am not a pastry chef.  I had never tempered chocolate before, and quite frankly, this is the part that scared me the most.  I used a dark chocolate baking bar and tempered it according to the variety of directions I found on a web search.  To make sure my chocolate didn’t stick to the mold, I sprayed it with a light coating of cooking spray.

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pouring chocolate into a candy mold

After spooning it (rather slopily I might add) into the molds, I let them set.  I put the first batch I poured in the freezer; they were ready to demold in under 10 minutes.  The second batch I let sit on my counter overnight.  They were solid the next morning.   







demolding chocolate from a reusable mold


They are demolded the same way you do resin — gently pull on the mold to expose and edge.  Grab the edge and remove the casting.







casting a chocolate Lego

And the results…  I was amazed at the detail the mold material was able to pick up from the legos.  It didn’t necessarily pass onto the chocolate, but I think that had to do more of my skill (or lack thereof) of working with melted chocolate.

Overall — here are my impressions:

1.  Very easy to work with.  There is no mixing of the product.

2.  Minimal equipment needed.  A microwave, double sided tape and some disposable paper cups were all that I needed to make a mold.

3.  I LOVE that this product is reusable.  I cast the lego bricks a few times by remelting the same material and felt like I got good results each time.

4.  I think this is an awesome product if you are going to be casting food items.

5.  What about resin casting?  That will be the next experiment.  I can totally see this for making a mold of an item that you only need to cast once or twice.  For a mold that you want to have for a long time, I think silicone is still a better choice.  Look for a resin casting experiment sometime soon!



That is such an interesting product! Thanks for sharing. I’m looking forward to seeing what you think about using it with resin. Is there a reason why one mold is yellow and the other red?


@Renee, great question! The gold is made by one manufacturer, the red by another. I wanted to try them both out to see which I liked better.


Thanks for sharing. I have seen, what I think are both of these products on YouTube. The red is kind of pricy and the yellow is more affordable. I have hesitated in a purchase of either due to the cost and that I couldn’t find any good information about using these molding materials with resin. So I will be really looking forward to hearing from you how they work with resin.


I am so glad you are checking this out. I found this same stuff at my local art store, and pick up info about the stuff. (Don’t remember what color it was). I was reading you can use it up to (I believe) 35 times, but I was wondering then what? It really did not explain why.
I would love to use this with resin, but for projects that I only need few cast.
Great party theme thing for food make unique ice cubes, candy party gifts, decor for cake. Like your Lego! The next Pinterest idea. Sorry, got carried away.
Thank you for sharing your next adventure, can’t wait till next weekend brings.


Maybe not so pricey if you can reuse them over and over again for different types of molds. I think they would be great for getting into mold making without having to worry about whether the molds came out right or not.


That looks very interesting. I like the multi-use aspect. It wouldn’t work to create a mold something heat sensitive, but for almost anything else, how very cool. I also like that it’s liquid so it can hopefully flow into small details. Transparent is nice, too, so it could be used with inclusions.

For resin, I would be very curious if the resulting piece has a matte finish when the original is shiny.

I’m also wondering how these would hold up with various clays, too

I think I might need to find a source just to experiment. I like playing with science *grin*


I saw this advertised and hesitated to get it due to the price. Maybe I’ll try it after all! I have lots of things I could do with it, one-of-a-kind items for jewelry, for instance.


A tip when you cast (the gold brand at least, which I’ve played with) resin in it is to put the mold in a freezer after adding your resin… remember heat melts this stuff, and resin heats up as it’s curing, so you’ll loose details if you don’t cool things down a bit. I made a few copies of some of my kids small toys and it worked well enough though I found it sort of messy and hard to work with so I haven’t played with it all that much. Can’t wait to see what you come up with!


I have not seen this anywhere here – please can you tell me what is it called and is it available in the UK?

Katherine Swift

So that I’m clear, is the surface next to the mold or the surface open to the air the side that is cloudy after casting?

Katherine Swift

How did you mix the polyester resin (how much resin to how many drops of hardener) and what was the size of the bead casting?

Katherine Swift

Hmm. Maybe. I haven’t used Gedeo resin, but know it’s an epoxy. I haven’t had a problem with epoxies and Composimold. Maybe it is the latex? I will ask Composimold for their thoughts on this as well.


Hello Katherine and Annette-Its Mike with ComposiMold.

Annette, do you have any pictures of the molds, casts, and master parts? The master has a huge influence on how the cast appears as does the resin. If the master is smooth and shiny and the resin is mixed carefully without creating bubbles, it is our experience that the clear resin cast should come out smooth and shiny. If you would like to call us and discuss, we are most always available. If we do not answer, please leave a message and we will get right back to you. 1-888-281-2674.

Also, it might be worthwhile to sign up for ComposiMold’s 100 page e-Book: Setting You Up For Success, Mold Making and Casting With ComposiMold. (Written by ComposiMold Inventor, Stan Farrell and Artistic Director, Michelle Miller)
I am looking forward to your response-

Have a great day! Best regards, Mike


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