Sandify, and a build with some clever tricks. I am guessing the trouble is too much sand, and maybe a magnet that was too strong. But I like the felt pad option anyway. The tons of sand does make interesting patterns. Unlike a lot of these videos, he does actually show the website (although I am not sure he actually says the name).
@jeffeb3 I was coming here to link the video but you beat me to it!
He did not mention the name but agreed that it was a little face time for the site. Great work to the whole Sandify crew!
If ever I come to grips with the LR2 - this is next… IF!