Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Unstable

The problem with this easel is that there is no way to lock the legs into place, so the easel is highly unstable. Maybe the legs will stay put on plush carpet, but who paints on that? On hardwood or tile floors the legs scoot out and flop flat. Tightening the wingnuts makes only a temporary difference; even the slightest pressure on the table causes the legs to collapse. I gave this product two stars (instead of 1, which it actually deserves) only because I like its general appearance and wood construction.