- Joined
- Mar 12, 2013
- Messages
- 302
I think the days of changing tool holders just to use the edge finder are over. I was looking for plans for a touch probe for my CNC mill and didn't really find anything to my liking. What I did stumble across was information where someone used a multimeter to establish the the edge of a project.
I used this method today on a project that I was making and it was nuts on. It couldn't have been simpler to use.
You set your multimeter to it's lowest setting to measure ohms. Then you attach one of the leads to the table.( it doesn't matter which lead you use). Then hold the other lead against the cutting tool. If you are using an end mill be sure the widest part of the flute will touch the work. The ohm meter should read under 2 ohms. Advance the work toward the tool slowly and watch the ohm meter. When the tool touches the work the ohms will drop to around .2 or .3 ohms. You have now found the edge of the work. From that point it works basically like a regular edge finder.
I cut my set-up time and I wasn't constantly looking for wrenches and edgefinders. Hope this helps someone else.
I used this method today on a project that I was making and it was nuts on. It couldn't have been simpler to use.
You set your multimeter to it's lowest setting to measure ohms. Then you attach one of the leads to the table.( it doesn't matter which lead you use). Then hold the other lead against the cutting tool. If you are using an end mill be sure the widest part of the flute will touch the work. The ohm meter should read under 2 ohms. Advance the work toward the tool slowly and watch the ohm meter. When the tool touches the work the ohms will drop to around .2 or .3 ohms. You have now found the edge of the work. From that point it works basically like a regular edge finder.
I cut my set-up time and I wasn't constantly looking for wrenches and edgefinders. Hope this helps someone else.