Resin casting tricks – resin casting hacks

resin casting tricks

Resin casting tricks

One of the neat things about resin is that while many people create things with resin, almost everyone has a different way of doing things.  Over the course of time, many of us have found our own resin casting tricks to help us get the end results we want.  I recently asked a few of my favorite resin crafters and manufacturers what their favorite resin casting tricks were to share with readers.

Trick 1

My favorite trick is using a heat gun or embossing tool to pop bubbles in resin. It has saved me with so many projects.

-Jasmine Moore, resinista blogger at Resin Obsession

Trick 2

Got a large open-backed bezel that packing tape won’t cover? Try using contact adhesive instead. It has a bit more stick than packing tape so you might find that some sticky residue is left behind. Here are three ways to make light work of cleaning it off:

o Place the item in the freezer for half an hour. This can help the tape release more easily, leaving behind less gummy residue;
o Gently rub it off with methylated spirits (denatured alcohol); or
o Spray it with WD-40 lubricant and gently rub it with the pad of a finger. Clean up with a paper towel to remove any greasiness, before washing it clean.

-Mylene Hillam, jewelry artist and resin blogger, Mill Lane Studio

Trick 3

My favorite trick (albeit a costly extra step) is to mix a batch of resin and then pour it into a bottle that has a yorker cap. The cap gives me much more control putting resin where I want it without dealing with drips and overpours when using a cup and stick.

yorker caps

-Carmi Cimicata, resin blogger and mixed media artist, I Love Resin

Trick 4

This one is kind of a stumper because I have a few favourites! Marbling is fun and creates neat effects. Brushing powdered pigment in moulds yields really cool effects. Liquid resin on a curved surface is tricky hard to do but is a super cool effect. Using texture tiles and cookie cutters with Silly Putty is fun because it can be so unique. ARGH! I think my favourite trick is the one I have most recently used that makes me smile when I see the final result and it meets or exceeds my expectations. This does mean that my favourite trick changes when I work on a new project with a different technique, but that’s okay. I like doing a lot of different things. If only one thing was my favourite, I would likely do it too much and then not like it as much.

-Kate Ledum, resinista at Resin Obsession, mixed media crafter and artist, Rijacki Design

Trick 5

Baby powdering and warming the silicone rubber mold up before casting resins are by far my favorite tricks as the baby powder releases the surface tension of the silicone rubber eliminating air bubbles and the temperature helps the resin cure faster!

-Carol Wedlake, technical service, Alumilite Corporation

Trick 6

I actually don’t know which one to choose!!

I hate bubbles as everyone does!  I always heat my resin before mixing, then I vacuum the resin, then I pour it very slowly into the mold.  I have a toothpick handy to remove bubbles caught in corners.

Then depending on the project, I might put the filled mold into the vacuum again.  After that, I have a creme brulee torch which I use to zap the remaining bubbles.

Another thing I do is set up more molds and projects than I need, as I hate to waste resin!  So sometimes I get a little extra pair of earrings made or a ring!

-Linda Carmichael, resin jewelry artist, Ruby Bijou

Trick 7

Always have gel alcohol hand sanitizer on hand and baby wipes when working with resin. It is the best stuff to help get resin off you or anything else you may accidentally get resin on. Easy trick but totally worth it!

-Ellen Anderson, resin artist, @EllenAndersonArt

resin on acrylicTrick 8

Our favourite trick is saving excess resin mix on an acrylic sheet to chop up and use in other pieces at a later date!

-Kate Battes and Claire John, resin artists and UK resin supplier, Resin8 UK

Trick 9

I think my best tip for working with resin is to warm it up, especially if you are in colder climates. Warm – not hot! It mixes better and it keeps the bubbles down too!

-Mona Schmitt, resin and mixed media crafter, Craft Klatch

Trick 10

The trick I would like to share is one I just shared with one of our customers. After doing her project yesterday she realized this morning that she spilled epoxy resin on her glass tabletop. I shared the following: Place boiling hot water on an old towel or rag and place it over the epoxy; then wait a few minutes and use a putty knife or another flat tool to gently get up under the epoxy and pop it off. This works like a charm. It needs to be a hard surface that water will not damage.

-Marty Sanchez, technical service specialist, Environmental Technologies, Inc.


Trick 11

Learn when the soft cure time of your resin happens.  There is much you can do during this time should you have made a mistake.  I found this out when I was doming resin and went back later to check my pieces.  The resin was so syrupy, I couldn’t get the microbubbles to pop.  Instead, I pushed them over the side of my piece.  Once the resin had cured to where it was rubbery, I found out I could peel it right off!  Now, when I drip resin over the sides of my bezels and such, I don’t panic.  I set a timer to go back in so many hours and peel the resin off.  Anytime I don’t have to sand off excess resin is a win!

(You can see how to do this in the video.)

-Katherine Swift, author, and creative director, Resin Obsession

Want to learn other resin casting tricks?  Then grab your copy of Resin Fundamentals.  It cuts through the noise of resin information out there and instead shares the vital details you need to know to make something amazing with resin.


Unpublished Blog Posts of Resin Obsession, LLC © 2020 Resin Obsession, LLC

Like this post? You may be interested in  What kind of resin should I use? - Choosing a resin

29 thoughts on “Resin casting tricks – resin casting hacks

    1. I have found out that when coloring resin with alcohol inks
      purples and violets and reds loose their color once mixed in
      the resin. When first mixed it looks beautiful , but 10 minutes later its clear. You had a video using India inks and had purples that kept their color. Is india inks the solution????
      What works best for coloring resin purples reds etc?

  1. I wish someone would post a tip about getting the resin really glossy and shiny. I’ve tried everything I’ve read on this site, plus other sites – Novus, spray, diamond glaze. Nothing does the job. I recently read about envirotex Lite, but you’re supposed to pour it. How would you pour it over a bracelet?

    1. Hi Tereze, if you want a high gloss finish on your pieces, I would suggest either using a polyurethane or polyester resin. Those will withstand the heat of a buffing wheel. You can achieve a high polish by using a cotton buff and buffing compound (I like to use Fabulustre.)

    2. I have found that if I let my resin sit about 25-30 minutes after mixing it (it thickens) and then use a paint brush to paint a layer over my pieces, they come out like glass. The thicker it is, the harder it can be to work with so don’t let it sit too long. I like mine not quite as thick as honey. Also keep in mind once it thickens it’s easier to make bubbles so keep a flame source handy. I use acetone nail polish remover to clean my brushes so I can re use them. Check out my Facebook page to see how mine turn out:

    3. You mix your Environtech and use a gloved finger to rub the pour resin on your project. Also works for shining dull resin projects as well.

  2. I can’t believe I can’t find any classes on mold making and resin casting in NYC. I am self taught but just need a workshop and some hands on training. At this point I am willing to travel. Any suggestions/tips would be greatly appreciated.

      1. It’s so weird. One studio told me they discontinued the resin classes as students were disappointed they had to wait for curing and didn’t have the instant gratification but I think that’s one of the cool things about it. De molding is like opening a present. Good luck with finding something.

    1. any chance you’re still advancing your resin-casting skills? i have a small project and i’m looking for someone to execute it. trying to float some broken pieces of glass in a resin cube approx 6x6x6″. thank you!

      1. hi, sorry for late reply. happy to help if I can. moving and traveling so need to get back to it now

  3. Has anyone tried to put human ashes in a project, and how does it come out? I was thinking of a clear necklace with a small picture of my father and his ashes in it…. Any suggestions?

    1. Unfortunately, this happens commonly when casting resin in molds. Because of surface tension, it wants to ride up the sides of a mold which leaves that edge.

  4. hey! with open back bezels, i have been laying them on packing tape which works great to keep them in place.. but when placed on tape i cannot use the heat torch to get rid of bubbles. a silicone mat works well to ensure the reisin doesn’t sick AND i can use heat torch. but they slide all over the place sometimes. any tips?!

  5. I put flowers in a silicone mold and poured the resin on it, once it cured it not clear. Is there something you can put on them to fix that?

  6. One great shirt that I’ve used is to take any kind of tape to clean up your molds and your silicone surface. Picks up hard and resin glitters and any kind of debris with a charm.

  7. White vinegar cleans up all resin messes. Just put vinegar on your paper towel and it wipes right off. If the resin is really thick it way need to set on it for a little bit. Wash your hands with vinegar and air dry. I always have vinegar handy because I can be a little clumsy at times.

  8. Thank you for the Vinegar trick. Recently, I heard that I should not clean resin off my hands with Alcohol (I wouldn’t use Acetone . . . ,) but I didn’t hear why. (I would appreciate any comment or reasoning why alcohol is not suitable, safe??) So I am going to try white vinegar.

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