I buy the tubes manufaturer direct from China and if I have extras, sell some here on AZ.
I have used several types of foam. Believe it or not, I have had very good luck with cotton balls. Takes about 80 and they do a nice job of dampening that hollow sound, which is the primary reason for filler. You probably know too that you need the very best epoxy when working with CF.
I have used several types of foam. Believe it or not, I have had very good luck with cotton balls. Takes about 80 and they do a nice job of dampening that hollow sound, which is the primary reason for filler. You probably know too that you need the very best epoxy when working with CF.