09-11-2015, 04:25 AM
Hi Pete
Cutting left to right then right to left nearly always ends up with an over sized slot .
Just remove metal in one direction of travel and at the end of the slot retract the tool completely and return to the start position. And repeat until required depth is acived.
Plunging to depth at each end can cause over size problems if there is play in the machine.
If you want a good fitting key . Set end stops use a smaller cutter to rough out then finish to size with correct sized cutter .
Probably clear as mud lol
Rob
Cutting left to right then right to left nearly always ends up with an over sized slot .
Just remove metal in one direction of travel and at the end of the slot retract the tool completely and return to the start position. And repeat until required depth is acived.
Plunging to depth at each end can cause over size problems if there is play in the machine.
If you want a good fitting key . Set end stops use a smaller cutter to rough out then finish to size with correct sized cutter .
Probably clear as mud lol
Rob