These were made with Alumilite and brought up to 60 pounds of pressur in my pressure pot. No vacuum, vibration of cleaner. I like to keep things simple. I use mica powders for color and add it to the resin, mix it real good, add in the B or hardener and mix it even more. I then pour some into the bottom of the mold, place in the pine cone and pour the rest of the resin on top.
Eric, These are awesome!! I've been turning plain old Georgia pine cones using CA to stabilize and finish for some time but as JohnU says, the colors really jump out on these. Great pens.