Hello everyone, I have a question regarding boring on a small milling machine, I have a WM18.
Before buying a proper boring head (there are many different types, sizes and prices!) I thought I'll mock up something simple just to gauge the machine's limitations etc. I used a fly-cutter body I already had and machined a 12mm dia boring bar using a ground drill bit for the cutting edge.
It seemed to work fine on light cuts of say1mm off the diameter, but when I tried to up the depth of cut to 2mm off the diameter I could see the mill head sort of moving – just a little bit but that cant be right no?
I was boring a hole approx 18mm diameter, 40mm deep at about 250rpm, material not sure what exactly but it was a 46mm diameter 8.8HT
The tool seemed rigid enough with no nasty chattering etc, and it cuts ok, after a couple of passes the cutting edge is still sharp. Any advice is welcome, thanks.
Chris