Re: Scanning with Touch Probe

> Peter, Shopbot sells a probe similar to the MaxNC style. One of the
> problems with a probing system is that you need to move really fast, and

you

> have to be able to detect the contact switch, AND stop quick.

Along with a used 3D stepper system I bought, came a simple probe that looks
like an LVDT of some sorts.
Although I haven't taken the time to figure it out yet, it seems like this
system moved until the probe touched the surface of the object, then
stopped, then separately measured the amount of travel of the spring loaded
fiber touch point.
That way your system has some time to coast to a stop after each fast move,
without being afraid of crashing the probe or loosing accuracy from
mechanical overshoot.
An inductive, LVDT like probe for short travel would be fairly easy to
construct and calibrate I would think.
Maybe this is an idea?

Greetings,
Mike.