The trial run of the Randal Alan 3D printed hat block is complete. To be honest, I was fully prepared for the block to fail, and even thought it might, however, the finish held up nicely and the hat body released easily from the block. I figured the block itself or at least the finish would probably just melt and stick to the hat body. I'm happy to say that didn't happen. I applied the maximum amount of heat, steam, and pressure and even spent some time ironing directly on the block with only a thin pressing cloth between the block and my commercial steam iron with no ill effect to the block. After all that abuse, I did notice a bit of discoloration at the top of block, but that was not due to finish breakdown or loss and I don't believe it's anything that will effect the block's performance in any way. In summation, I believe that Randal's blocks will be a great alternative to heavier, pricier wood blocks. Of course, at this point, I can't speak to long term durability. I will say that, so far, I can see no reason why these blocks won't provide years of good service. As a craftsman I believe there is no such thing as too many tools in the toolbox and I'm excited that there is yet another one available to hatters. As a bonus, there seems to be no limit to the styles he can create. Disclaimer: Even though Randal was kind enough to send me a free demo block, I have no personal stake in the success or failure of his enterprise and have neither requested nor received any future special considerations.