I’ve read numerous times about the first color to hit the cloth sticks, reguarding tints. Is this also true with pigments?
I would like to do an interesting color combination on my next board but it wouldn’t look right if all the colors mix to become an ugly brownish color.
Can one acheive a finish with pigments that looks like a ‘solid resin tint’ ?
Chris
yes, only more so. Pigment is intended to make opaque resin, tints are for translucent. That’s why they’re called “pigment” and “tint”.
If you use just a little pigment, the resin will not be opaque, but the resulting color will be different from a tint.
To avoid your colored resins mixing to brown, suggest you 1) don’t swirl them together much in a single pot 2) pour on the blank only as much resin as one pass of the squeegee will distribute. If you pour on a lot, the squeegee work will blend the colors (to brown or whatever) before it gets “held” by the cloth.
Another suggestion… don’t use too many colors.
Another… don’t use pigments, use only tints.
Caution… mixing colors for swirls can use a lot of resin, and waste quite a bit, unless you’re using UV cure, then you can save some.
Caution… if using UV cure and pigment, you’ll have to use catalyst on the dense colors. SOME pigments will still allow some UV curing, but many/most will block UV at the surface. If blocking happens, the surface will be hard but down below, in the critical area where you need the resin to bond with the foam, it will not cure, maybe never. Don’t ask me which colors are “UV transparent” I don’t know, and I won’t waste time and resin to experiment. Simply use a carefully measured amount of catalyst when you need to, as above.