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Automatic tool height


#1

It seems it would be easy to incorporate an auto Z height function. Have a fixed height aluminum or brass plate connected to one input on the Arduino that could be held over the router hole and have the Z come down until it touches and subtract the plate height.


Touch-Z approach: to Puck or not to Puck?
#2

Fairly new here and waiting for the February shipment…

But what are we trying to solve?

Increase accuracy? Help with calibration?

Sorry for the questions, but I’m trying to understand :slightly_smiling_face:


#3

Hi,
Setting Z=0 is the task here. Other CNC platforms have a ‘probe function’, a simple electrical circuit that is closed by touching a conductive material. XYZ CNC auto probing gcode calibration plate GRBL UGS

Your manual option is to slowly bring the spinning bit down until you start cutting a minimal fraction of your workpiece.


#4

I have great news! This feature is already supported :grin:

I think it uses Aux port #1 but I could be wrong about that


#5

@Gero

Would this help me utilize boards that is not full size? :thinking:


#6

Thanks Bar, I will give it try this week.


#7

I thought Aux 1 was for spindle on/off? My wiring diagram say that the Z-probe is on Aux 4.

I haven’t implemented this feature yet myself, maybe @blurfl can add more to this? I believe he has used this feature before.


Maslow Electronics Wiring Diagram for Aux Outputs
#8

I know I saw a post with pictures of this. Can anyone point to that post please?

Thank you


#9

I know, I thought I had seen it myself, but I did forum searches for “Z probe” “Zero Z-Axis” and “G38.2” and only got a handful of posts. I am interested in doing this myself when I do my electronics upgrade, so I would also greatly appreciate more info.

Maybe someone who has used this could do a quick write-up in the wiki?


#10

If someone finds the post I was going to piont to it from the Wiki.

Thank you


#11

This link?


#12

Cannot like this enough, that is exactly what I was looking for! The weird thing is that the forum search for G38.2 should have grabbed that. It’s in blurfl’s post like seven times!

Thanks so much!

EDIT: Weird side note, I went to go look on the old forums too to find that they aren’t active anymore :open_mouth: I know it doesn’t make sense to continue to pay for a forum we don’t use, but I hope we got all the important information off there before the subscription expired.


Proper tool change procedure
#13

Good find - Tkx

New page in the Wiki-

I need to find the spindle on/off to add to this.

I’m doing as usual 4 things at once. 5 when you add this. making a website, working on Maslow docs/ computer stuff, reaching out to a parts MFG. Sheesh :wink:

Thank you


#14

I believe this thread is the one you’re looking for:

I know the feeling, I’m getting remakes sent down to the mill as I’m writing these! XD


#15

I’m looking at setting up discourse on another site and backing up these forums -FYI

let the fun begin.

Thank you


#16

Yep - that was it - added to the Wiki - Enjoy

Thank you


#17

@Bee

The secret trick is google :wink:

searching like this got the right post

site:https://forums.maslowcnc.com probe


#18

I understand - however too many open windows right now. :stuck_out_tongue_winking_eye:

@Splaxi . I appreciate your help.

Thank you


#19

No probs. Trying to help where I can. No wiz with tools and stuff, but IT - that’s my ballpark :grin:


#20

For those using the Ridgid router with the stock z-axis, you might be interested to know that the collet is electrically connected to the z-axis motor housing, thus providing a super simple connection point for an automatic z-axis zeroing setup. No clipping to the bit necessary! (unless, of course, your bit is somehow not electrically conductive)