I belive my problem is the card, that is a cheap china USB card:
https://www.aliexpress.com/item/Factory-outlets-100KHz-CNC-mach3-USB-4-Axis-Stepper-Motor-Driver-Breakout-Board-USBCNC-Smooth-Stepper/32334451366.html?spm=a2g0s.9042311.0.0.Q6q1FJEvery thing else on the lathe works fine. I'm relative new to CNC som bear with me. I build a CNC router/3D printer and this works perfect after some try and failing
So your putting an M6-1 thread on a 15 diameter stock. No M16-1, just for test purpose. I have a 16 mm stock X start is 16 mm.
? Z10 You realise that normaly one would thread towards the chuck
so Z-10 and NOT Z10.? Yes it was -10 in the wizzard but I see it is positive.
Note also that the there should be a move
of 3 to 5 P ( or greater) before the actual start of the threading
as this give time for the axis to accelerate. You should also check
the feedrate in the wizard so that chosen feedrate is acceptable.
? H.3 I would suggest a smaller first pass depth it is 0.3 mm
? C.025 Why so small? I don't know?
? B.0001 Practicaly speaking, doubt that your lathe accomplish that.
B is optional.... I don't know
Are you using a SmoothStepper? It would control the threading. No I'm using this:https://www.aliexpress.com/item/Factory-outlets-100KHz-CNC-mach3-USB-4-Axis-Stepper-Motor-Driver-Breakout-Board-USBCNC-Smooth-Stepper/32334451366.html?spm=a2g0s.9042311.0.0.Q6q1FJ and I think this is the problem. I do not find any index connection
? M03 S300 You need to set spindle speed manualy and based on the index
pulse signal.See the Threading Write up. Yes I just read it and learned a lot. Now I understand what the codes means.
If Mach3 sees no index pulse there will be no threading ie; changing from G94 to G95. Note that threading will not start
until the index debounce is satisfied ( needs to see so manny index pulses before it accepts the signal). This is properbly the problem.
I have a standard brakout card that I can connect to the computer LPT port, can I use this in addition to the USB (of cause it must handle index) or should I just buy a USB smooth stepper card?
It's a lot to learn and this is the purpose of my project. I do not have any particular use for the CNC late other than finding out how it works.