Photographing Resin ... A Few Options

One suggestion you can do without a professional setup is to get 2 LED shop lights to the side of your work at 45 degrees. Hang a large black sheet behind you to eliminate reflection. This setup gives you diffuse lighting, and gets rid of a light source directly behind you. You'll also want to wrap some black material around your tripod so it doesn't reflect light from your shop lights.

Another suggestion I have received is many lights all with warm 40 watt and a few at 60. Then try to have some light bouncing off walls/ceiling. ..........

Ideally, when you can, best light is outside morning light. Try to photograph outside on a overcast day. It can be the perfect photographers diffuser for less glare. No flash.

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For smaller pieces, there are online options on eBay, to purchase soft box lighting and you can try to angle the glare to the edge of the piece. ..........