Rounded corners on metal latche
Hello, Im from Poland, so my english is not good, but you propably understand this :-)
I have big problem with woodturning and anybody can't help me.
I want to make rounded corners in wood. I have metal lathe. First I take soft wood and "made in china" knife (this yellow on photo) for hand mill machine. It's not have straight blades, so I can't perfectly position it in lathe center axis. But as you see, it's possible to make something with it.
Next I take merbau wood (i know, it's very hard) and bought CMT knife for rounded shapes. The top of the blade is perfectly in lathe center axis. I set lathe to 700rpm and start cutting. It's make high sound and wobbling. It's look as it won't cutting. The wood is getting hot if i tried to cut it longer. Knife blade is very sharp and easly cut paper.
What Im doing wrong?