[Katherine Swift]

Hi D,

Im sorry to hear you are having resin curing problems.  Resin needs to stay at a constant temperature.  I recommend keeping it in a cool, dark place, like the bottom of a closet.  When the temperature swings significantly, condensation can form on the inside of your lid and can drip into the resin.  Im not sure if this is why your resin has turned yellow, or whether or not the resin is old.  Unfortunately, the mass merchandise craft stores dont do a good job of rotating their stock (in my opinion), so just because you bought the resin recently doesnt mean it hadnt been sitting on the shelf for awhile.

As for the tarantula, I would do exactly what you propose.  Cut it out with a dremel tool and try to recast.  Make sure your edges are smooth and dont show any tool marks before recasting.  Otherwise, that may show up in the new casting as a visible line.

Which brand/kind of resin are you using?

[Katherine Swift]

Hi Jessica,

Unfortunately, its the nature of polyester resin to remain tacky on the surface exposed to air.  If you are referring to the Castin Craft polyester resin, the manufacturer does have a curing agent that can be mixed into the resin to keep that from happening but will make the resin cloudy.  My best suggestion would be to coat it with a layer of our resin gloss sealer spray once the resin has cured.  You can find it here:  https://shop.resinobsession.com/collections/tools-and-supplies/products/castin-craft-gloss-resin-sealer-spray

[Katherine Swift]

Hi Kelly,

In reading your question, it sounds like you are going to use a belt buckle blank as opposed to a belt buckle mold, yes?  I’m writing my answer below like you are using a blank.

First, seal your item with a clear drying white glue, including the edges, then gluing the image to the bottom of the buckle.  Seal again inside the bezel.  You definitely don’t want to experience any water stains.  This is the one I use: https://shop.resinobsession.com/collections/tools-and-supplies/products/ice-resin-paper-sealer

I would not pour resin first, then put the image down, because you don’t want to chance trapping bubbles underneath your picture that may come up later during curing.

As for the resin, use the Resin Obsession crystal doming resin: https://shop.resinobsession.com/collections/resin/resin-obsession-crystal-doming-resin

While this isn’t a belt buckle, this tutorial on our blog should help as well: https://resinobsession.com/resin-tutorials/how-to-make-a-resin-pendant-using-a-bezel-pendant-tray/

Good luck!

[Katherine Swift]

@Mindy,

When it comes to sticky resin (especially for newbies), I would say 75% percent of the time it comes down to either not measuring accurately or not mixing thoroughly.  I know in the beginning, I thought I was doing a good enough job, but not really.  Here are a few things to check on:

1.  Use measuring cups with graduated lines to measure.
2.  Mix for at least 10 percent of the pot time, scraping your cup and sticks several time during the process.
3.  Mix the minimum amount required by the manufacturer.  (I doubt that is the problem here for your bracelet, but resin requires heat to cure.  If you dont mix a minimum amount, curing wont occur).

How are you doing with these steps?

[Erin]

 Sadly Im in the UK so that isnt an option, though I have asked on another forum about available equivalents (slightly different reason, surface curing of polyester resin) – no suggestions yet, however.

I stuck the feather using mod podge hoping it would both seal it and alter the index of refraction. Ive put it in the resin tonight so will see how it looks tomorrow, though it did look suspiciously transparent again.

[Katherine Swift]

Hi Monica,

The first thing I would ask you is whether or not you have experience with any of all three of these resins.  There are pros and cons to each of these, but ultimately, you need to use the one you are most comfortable with.

How are you going to make these beads?  Plastic mold?  Silicone mold?  That will also impact my answer.

If getting your castings bubble free is very important to you, then epoxy is the way to go.  The other two are much quicker curing and may not let you get all the bubbles out before it starts to gel.  The polyester and polyurethane resins are nice in that they will finish harder, which would be important if you expect your beads to be in a high impact situation.  Here’s a post on our blog that may help you as well:  https://resinobsession.com/resin-frequently-asked-questions/what-kind-of-resin-should-i-use/

Share some more details here and I can refine my answer some more.

[Katherine Swift]

Strange!  Is it sinking too?  Are you using a coarse glitter or a fine glitter?  Is your resin curing okay otherwise?

[Katherine Swift]

Hi Eleonora,

Here are a few of my thoughts:

1.  Are you mixing the recommended minimum amount?  Its almost like your resin isnt getting hot enough to cure.  Since resin is a chemical reaction, you need a minimum amount to mix together in order to produce enough heat.

2.  How old is your resin?  You mention that its yellow.  Maybe its past its good shelf life?

3.  How have you been storing your resin?  If it is indeed old, maybe it also has some water contamination.

4.  Perhaps youre experiencing the change of seasons I hear a lot about.  Living in Florida, I havent run into this problem, but I have spoken with several other resin artists in Northern climates that have curing problems moving into the warmer and cooler parts of the year.  Maybe your resin temperature hasnt caught up with the ambient temperature yet.  Try warming your bottles for 5 minutes in a warm water bath before using next time.

Let us know what ends up working for you.

[Katherine Swift]

Hi Sarah,

73 degrees should be warm enough for your resin to cure.  Was it at this temperature for the entire time?  If so, I would wonder if your resin was measured and mixed properly.  If it wasnt that warm the entire time, I would make sure to have it at that temp the entire curing time.

As long as your resin is just a little sticky on the surface (not gooey), another layer of resin over top should be fine.

[Dan]

Hi Katherine,

thanks for the response.

Is there a polyester resin in particular that you would recommend? Also, is polyester resin generally as good for embedding dried flowers as epoxy? I somehow feel like flowers would fall apart more easily in polyester resin than epoxy resin, while curing. Ive been wary of using polyester for this reason.

[Katherine Swift]

Hi,

This is a pretty common occurrence with quick cure polyurethane resins when vacuum casting.  I checked with the Smooth On (the product manufacturer) online directions for this product, and they say vacuum casting is not necessary.

If anything with polyurethane resins, pressure casting is a better choice.  It will make the bubbles very small and keep them that way while curing rather than trying to suck them out.

[Katherine Swift]

Hi Sally,

I like to use nitrile gloves.  The nitrile gloves we sell on resinobsession are also approved for use for medical personnel when administering chemotherapeutic agents.  (meaning they are not very permeable to chemicals)   

In general, I dont like to use latex gloves because sometimes latex can inhibit curing (mostly with silicones), and it is also more permeable than nitrile.

I also wonder if youre having a reaction to the latex instead of the resin?

[Katherine Swift]

Hi Denise,

As soon as you mix your resin and hardener, the chemical reaction starts.  Whether you pour it in the mold or leave it in the cup, it’s going to start curing after the specific pot time.  You either need to find another use for the resin left in the cup or plan on mixing less.  If you need ideas for leftover resin, here are some:  https://resinobsession.com/resin-resin-resin/leftover-resin-small-resin-projects-to-put-it-to-good-use/

[Katherine Swift]

Roberta,

There are many reasons why your resin isn’t curing.  The two big things that I would suggest you start with are that you are

1.  Measuring accurately
and
2.  Mixing thoroughly

I would say these account for approximately 75 percent of curing problems that I help people with.  Beyond that, its almost case by case dependent.  Heres a link on our blog with some other troubleshooting articles: https://resinobsession.com/tag/troubleshooting/

[Katherine Swift]

Terri,

Here are my thoughts:

1.  The mold release may not have been dry.  I like to use a light mist, then let it dry for about 20 to 30 minutes before using the mold.

2.  Even though youre using a space heater, resin does best when the room temperature is in the low to mid 70s F.  Maybe you could try to create a tent or hot box to hold the heat for the resin while its curing.