@dc42 thanks I'll try it

@dc42 I'm using version 2.0(RTOS) (2018-06-05b3)

@dc42 That doesn't seem to work. If I remove "H1" from the Tools section of config file (M563 P0 D0 H1) I get the following error:

" Error: Attempting to extrude with no tool selected."

So I attached a thermistor to the board just to "fool" the board into thinking there was an active heater but then I get temperature errors. And now even Col Extrusion M302 P1 is generating errors

Surely there must be a way to do cold extrusion (no heater, no thermistor) for those of us who don't want to extrude hot filament? How would you suggest I force the current tool to have no heaters attached if not in the config file?

@dc42 thanks, I'll try that

M302 works fine in a starting script or sent via console. I just wondered if there was a way of "embedding" it in the config files so that it runs by default

I'll set up a macro instead

Thanks guys

Does anyone know how to setup cold extrusion?

I use my delta printer to print porcelain using a deltawasp clay extruder which means there is no hotend or heated bed so I need to be able to start the extruder motor without it checking the thermistor temperature (I don't have one)

If I select "no tool" in the config file then I get:

Error: Attempting to extrude with no tool selected.

If I define a tool with a "zero" temperature, I get:

Error: Temperature reading fault on heater 0: unknown temperature sensor channel

I realise that most of you guys are printing filament but would appreciate any help you can give

Cheers