Saturdays are CNC setup days (part 2)

Do you remember when I said that an 0.2mm end mill was going to be fragile?

 iPhone pic of 0.2mm end mils

iPhone pic of 0.2mm end mils

I had my feed rate set to about 3 inches per minute with about 10,000rpm of bit speed. (I normally use 5-8 inches per minute for the 0.2mm 60 degree vbits as a comparison.)  

It made one isolation cut and then snapped off.  The cut (while it lasted) was ubber small and would be great for SMT work.  <sigh>

Dinner is almost ready so that will put a temporary stop to my work. Maybe after dinner I will try a 0.2mm 30 degree vbit.

73 de NG0R