[uberlinuxgeek]

Got my home/limit switches installed. For now did single switch install and not separate home and limit switches. I did the home ones and then set soft limits. The y axis dro limits some of the travel there could be another 1/2" or more of travel added without the dro, in the pic you can see where I installed the switches and used JTs doc on how to setup in Mach3. Not perfect but very functional.
Attachment 279966Attachment 279968

[BlackICE1]

What type of switches did you use and what is the repeatability of the switches? Do they work well enough to get to +- 0.0005 or better?

[BlackICE1]

I just installed one a Temco switch from ebay and it get great results that don't vary more than 0.0002" on my Patriot's DRO and that's when homing at 37.5"/min! There will be more variation from thermal expansion than that. Mounting it where I did allows full Y travel. I use a soft limit for the other extreme. Now when using the lathe with the correct homing offset I can turn a correct diameter without any test cuts probably well within +-0.0015. I have my QCTP base butted up against a shoulder that stays mounted to the table. I have 2 more switches I haven't mounted yet. I'm not sure how much use the one on the X would be, Z is kind of useful.