I have a design where two boards of the same size will be stacked like pancakes and physically touching. I want to electrically connect them, and I thought of just adding matching solder pads and putting the boards on a reflow oven. The idea is that the pads will melt a bit and form an electrical bridge across them, permanently bonding the boards and making a durable electrical connection. Here's the type of pad I was thinking of using. Is my idea crazy or will it work?
The manufacturing process also requires me to put it in a reflow oven anyway, so I thought I would save some effort by using this technique instead of something like a pin header or a board-to-board connector.