New Member Introduction - gSender question

New Member here from Louisiana. I have owned an X-Carve for about 7 years now and recently finished a New-Carve from CNC4Newbies. The cheap-o deluxe spindle died so I just ordered a PWN Spindle. I got the 1.5KW Aircooled 80mm because that is the size mount i have with the New-Carve. I am running a Demon controller.

I use a program called gSender from Senci Labs. I really like it but lately when I am adjusting my Z axis it runs away usually causing the bit to crash into the material. I don’t use a sensor blocks, I zero off the top of my material. Any ideas as to the cause and how to prevent this from happening? This happens on both machines.

Moved to a machine category.

I would check that everything is tight.
Are you sure the z isn’t running away and that it could be bit slip giving you the illusion its running away?

Might also consider it being a static issue. EMI is the bane of some folks hobby. They struggle regularly with interference of unshielded cables. This is a big reason we try to ensure our cables are all properly shielded and grounded.

I will check for sure. I am getting a new spindle motor and I’ll check all the grounds while I am installing it.

Everything is tight. I get good carves from the machine and it properly returns to ZERO whenever I ask for it. If anything was loose I am sure I would see bad carves.

Him saying this reminded me of a problem i had with my shapeoko. I had my z go down for no reason every so often with the HDZ.
One time i just watched as it happened taking note of what’s happening at the time it goes down.
My AC was kicking on.

I rectified it with an UPS

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Good idea my 220VAC air compressor is in the same shop as the CNC.

gsender recently updated and gave you a choice from grbl and grbl-Hal. The Hal version is only for the super longboard and can cause issues like you are describing if using on a regular grbl machine.

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