I got from a friend of my some toolplates. ( i don’t know the right word for it ).

Use a block of steel with the dimentions of 15X15X80mm.

Cut off a piece. The same dimensions as the toolplate - the bevel side.

with a smaller tool cut off the edge like on this picture.

I don’t know the right text , but on the picture you can see what i mean.

When you have do this, it must be like this.

Place the plate and make with a drill a center.

Use a smaller drill to make the hole and make screw thread in it.

Now it’s finished and ready to test.

It cuts excellent.