I have some lumber that I need to cut so that it has a 30 degree angle that comes to a gradual point along the long side. Naturally, I figured a 60 degree Vee Bit would do the trick. I designed the project in CC Pro (one sided, I planned to flip it when done) and the simulation looked like the finished product I wanted. Awesome.
I go to cut, and it was a surprise disaster. On my test wood (pine 2x4) the Vee Bit mostly ripped at the wood by the second pass. It was basically “chewing” the edges and chattering horribly.
Before I destroy more wood I figured I would ask the experts.
What is the best strategy for doing this? I have considered:
Using an endmill to cut “stair steps” into the wood then using the Vee Bit just for a final cleanup pass.
Sticking with the Vee Bit but dramatically reducing the plunge rate so that it cuts only very shallow passes. Previously I stuck with the stock settings for the bit.
That may work. I suppose I could even cut two at once that way. Here are pics and the file. I was doing this just as a proof of concept to see what would happen before I invested the time into making a complete project. The simulation shows the very end of a 2x4. If the plan worked I was going to flip it on the other side and cut the bottom to make it come to the desired point.
And then fix your math. You have the passes roughly 0.055 apart, they should be 0.0577
Ideally I think the best way would be to cut one level at a time with stepovers working outside in. Then step down. But there is no elegent way to do this in CC.
Remember the surface speed is very different at the tip compared with the widest part. Consider using only a portion of the cutting edge and making multiple passes to complete the cut.
