Hello Steve, As PCB supplier Coretec fabricates and delivers quite a bit of this product. T-lam is the dielectric made by Thermagon and its niche in life is its ability to conduct heat at 10X the rate of FR4. Those who use it love it; those that don't have a need never use it. We build standard PCB's that are laminated to heatsinks using the T-lam prepreg. We also deliver single, double and multilayer boards built with Thermagon dieletrics replacing FR4; all UL approved. In any case I have never heard one bad thing regarding assembly (or otherwise, save the price). Pretty big statement, but true. Boston Brad 781 858 0783