I never have problems with alumilite and humidity all year long here in Michigan and it does get hot and humid in the summer. I use mica's, pearls and oil based paints. You can still use PVC pipes, but you might need a mold release, otherwise a strong couple wacks on the floor should set it free. There is not much you need to change. You can pour it in a silicone mold no problem. The only thing you might not already have is a scale, the alumlite needs to be weighed 50/50 by weight is the mix for A and B. The demold time is 1-2 hrs depending on the thickness of the pour and the temperature of the air and product. In the winter my shop might get down to 50 at night, so the alumilite is chilled, and so I let it stay in the pot for 1.5 hrs before I remove it. In maybe 6 hrs from the time you pour it, you can technically make a pen, but I would prefer to give it 24 hrs to cure. I just purchase oil based paint by the quart, and sometimes you can get smaller cans...Ace hardware sells the tiny can's for $5 with about a dozen color choices, or you can get a pint or quart whatever the next size up can is at a paint store in any color you want. Alumilite dye is translucent. Paint is opaque. Pearl ex is translucent. Mix paint with pearl and you will get less pearl, more like a sparkle, but if you can use pearl and just a bit of paint to reduce the translucence while maintaining the pearl effect. You do have time restraints. You need to have everything ready to go, because the alumilite sets up fast..again depends on the ambiant temp of the product. In the summer that stuff can gel up in 4 minutes or so, maybe it's less than that, and you have to make sure it is well mixed, so you have to work fast if you are doing a multi color pour. If you pour half a mold and run out of product, so then you come back and pour out the rest later..the alumilite won't stick to itself very well. It will seem like it is stuck together, but you drill it and it will break at the seam.
