I was off work for a while and neighbor gave me a few of these little plastic saws to mess with. I got a few to run pretty good. But the question I have is why don't they stay in tune. It seems like every time you grab it off the shelf it needs a little tune. I have tried 3 different ones all the same. Tune it cut with it for a day put it away next time it needs to be fiddled with again. Aways it was just something to keep me busy anyway but just wondering if there's a fix for this besides the trash can