Wetting the paper sounds great but beware....if you are printing your foundations with a laser jet printer, the ink will transfer to the fabric. Ask me how I know this.I needed to "spritz" blocks with water to press out wrinkles. Pressed the fabric side. No problems. Spritzed the next block and the ink had transferred to my ironing board and I picked it up with my iron not knowing. Now my block is "printed" with the foundation lines on the fabric side of block. I never noticed the transfer and because I was not watching that I pressed the blocks in the exact (and I mean exact) place on my board, I made quite the mess. The lines would not wash out. (Hope I made myself understandable????)
In short, be careful with computer printer blocks and water.