I have attached a picture of the resin I am using. Got it from Amazon but there are lots of brands out there. Alumilite has come out with there own brand that I may try. It's a one part resin that does not require it to mixed with a hardener. You use a UV flashlight to set the resin and it can also be placed in the sunlight to further cure it, but not required. The resin is fluid but not to the point of being overly runny. I usually place a small amount of resin in the groove, place whatever I am using as an inlay into the resin, hit it with the UV light for about 30 sec, then repeat. Once I have the groove completely filled, I go back and fill in any gaps or holes with a layer of resin, hitting it with the light as I go. Sometimes I do place it in the sun to help fully cure the resin to make sure it is good and hard. Then place the ring on the lathe and sand smooth and polish.
Bobby
Louisiana