UV Resin Kit with Flashlight for Bonding

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Q1: Why does it not cure even after putting it under UV light for hours? Why is it sticky/tacky?

A: Please check if you are in one of the following situations.

①Wrong molds
Since UV resin is not casting resin, any mold that is large, deep or opaque is not for UV resin. If you want to make coasters, trays, or any other objects larger than 8cm, UV resin is not what you are looking for. Epoxy resin will definitely do a better job.

②Wrong pigments
Not all pigments work with UV resin. You will need to use pigments that’s specially for UV resin. Alcohol inks, opaque pigments are NOT recommended. Specially notes for using black pigments: Black color, in any sort of pigment, is tricky to work with UV resin. Please mix a tiny amount of black pigment and cure it in layers. Or pour a clear layer of UV resin and cure it first, then add black UV resin on top.

③Not enough UV light exposure
Please make sure you are using the correct UV light/lamp. If you are using a silicone mold, please make sure both the upper side and bottom side get enough UV light. That is to say, cure the back side under the UV light for the same time.

④Adding too much
If you add too much pigments, glitters, mica powder or other fillings, it won’t let enough UV light go through the UV resin to cure it properly. If it is sticky/tacky on the surface, you can simply coat a layer of clear UV resin. Let it cure under the UV light for 3-5 minutes.

Q2: How to remove the bubbles?

A: The thicker the UV resin is, the more bubbles you will get when you squeeze it out from the nozzle. And the viscosity of the UV resin will increase if the temperature is low. So heating up the UV resin is an effective way to reduce bubbles. Here are some tips that may help:

Pop the bubbles with a toothpick or a silicone stick.
Heat up the UV resin with a heat gun or using a heating plate.