A few weeks ago we had some friends over for dinner and they brought a 30 mm thick piece of birch plywood, where the sides had been cut at an angle. Pretty interesting idea.
The entire piece is 45 x 33,3 cm. The painted area is 32,5 x 21 cm. The painted area is protruding, the sides tapering off to almost nothing, which makes it the opposite of a conventional frame. I am not done yet…