3D Touch Probe / Edge Finder - A Low Cost Probe?

[Leadhead]

Have you folks seen the Craty CNC software for Mach3 & UCCNC. I have had it for a while and it is well worth a look.
In particular the compensation for eccentricity in the probe and the point cloud programming which I have used to good effect.
Quite inexpensive as I recall. I have no connection, other than a satisfied customer.

[Muzzer]

In particular the compensation for eccentricity in the probe....

Are you aware that these probes have adjustment for eliminating eccentricity (as most do)? In this case, they have 4 radial grub screws that can be used to shift the tip in X and Y. You need a dial gauge (DTI) with light tip force, then adjust the screws until there is no runout / eccentricity when you rotate the probe. You should only need to do this if (when!) you have a crash and need to replace or straighten the tip although a periodic check is sensible.

The Renishaw probes use a different system, with a ball bearing pivot under the base and 4 axial screws but to the same effect.

The trigger point for most of these probes varies slightly according to the orientation of the probe, due to the 3 internal pivots. So it's a good idea to orientate the probe in the same direction each time you use it, for consistency. That's a different issue to eccentricity.