When I cut the tapered legs on my cord organizer
I had an additional challenge: Because the oak came from the scrap bin, the end profile was actually trapezoidal. I still got a pretty decent cut by three things:
- Wait for the saw blade to come fully up to speed well away from the wood and cut fairly slowly.
- Push down on the saw (and therefore the rail) more than you normally would to make sure that little rubber strip on the front is gripping the wood.
- Yes, as others have suggested, use some other wood to support the back of the rail.
I did destroy one piece of oak while getting the technique down, but overall it worked amazingly well.