I finally got a chance to start using my Nomad and I’m running into some most likely rookie mistake(s). I’m trying to cut a 4"x5" 0.06" thick 6061 aluminum plate. The first 3-4 passes the machine makes are cutting air, so when it finishes cutting it has not cut through the stock. Otherwise the cut looks good once they start.
I’m using Carbide Motion/Create. The Carbide Create file was created from an svg file (also included if it matters):
When I jog the machine I adjust the Z axis slowly until a piece of paper under the bit won’t move without ripping. The bit extends about 3/4" from the collet. The stock is just double side taped to the plate. First few tries I doubled up on the stock worried about cutting through. I’ve tried adjusting the depth of stock in Carbide Create. In the linked version of the file the stock thickness is set to 0.064, but I’ve tried as high as 0.1, but it still never finishes.
That being said it does cut a bit deeper each time. So if that’s the setting I need to adjust how do I figure out the right number? My calibers say the stock is 0.06ish. Home position is set to touch the top of the stock. If I push it the Z axis further down during jogging then when the job starts it says it hits a limit switch and stops.
I’m using GRBL version 1.1f and latest versions of Carbide Create/Motion from the site. Build 4.0.414
I’ve tried various cutter settings, but this is what I used last time. There has been no problem with the actual cut once it starts.