John,
The purpose of the silicon pad, aside from promoting even heating of the substrate, is to ensure the transfer is in direct contact with the substrate.
Even though acrylic looks completely flat, there can be slight variances in the acrylic, or the platen of the heat press, for which the silicon pad can compensate.
That may be why you had mixed results with adhesion of the transfer.
I have very limited experience with OEM toner/Transfer paper on acrylic, through a few transfers Harvey sent to me.
Maybe beginners luck, but the piece I did, turned out very nice. I followed the instructions Harvey provided. David "The Stunt Engraver" Lavaneri
DGL Engraving
Port Hueneme, CA |