Thread: Assistance with CNC please

Hi John,
Welcome to the forum.
You are in luck as Greolt is the bloke that has perfected the Z axis setting and he is a forum member here. You would also have met him at the Melbourne BBQ.
If you have a look here you will see how it is all done. Lots to read.

Found this on the cnczone some where, unzip and paste it into your mach3 file, then open mach3, go to veiw and click on load screens and click on the file and presto !!
it puts a auto tool zero plate thickness setting on your screen and loads the code aswell.
This was easy for me as my IQ struggles to get past 10.
Michael

G'day John

You must have had a bit of a holiday on the way home.

Great to have you and Rhonda (forgive me if name is wrong) come to the CNC BBQ.

Read through a bit of the thread that Rod gave a link to and if you have any questions then ask away.

Greg

Hey John,

Great to see the spirit was fired up with the BBQ. Thats the whole idea isn't it, get to meet others and find out they have something you could use like the tool auto zero.

Are you going straight to the parallel port with the wiring as John Low-Shank was having issues when he interfaced his auto-tool zero with the smooth stepper. There was some buffering issues which caused detection delay. Just a thought if you have that setup

/Michael

Just my kiss method, but it's quick and works for any tool.

I keep a length of 1/2" brass bar handy, jog the tool down to 10mm or so.
roll the bar on the material surface, then slow jog the Z upwards til the bar *just* rolls under, then set Z to 12.7, or 1/2"

If using a straight bit, I repeat from a couple of directions, averages the flute error.

When you get used to it, it's very quick and easy.

Rgds,
Lin