Paste extruder setup - print head and feeder (DUET-WIFI)



  • Hey there,

    I've got a paste extruder setup which has a print-head and feeder (for the paste).

    Was wondering how to setup the tools - the print-head is wired to E0 and feeder to E1.

    Feeder should work (different steps) simultaneous with the print-head.

    What should I put in the G-CODE?

    Thanks.

    CJ.


  • administrators

    I suggest you configure the head as a mixing extruder with no heaters in M563, with mix ratio 1:1 in M567 and different steps/mm on each extruder as required.



  • like this ?

    M563 P0 D0:1

    also, how to run a G1 for specific extruder ? if G1 E100 it runs only E1..

    thanks!



  • @cj-bravo said in Paste extruder setup - print head and feeder (DUET-WIFI):

    like this ?

    M563 P0 D0:1

    also, how to run a G1 for specific extruder ? if G1 E100 it runs only E1..

    thanks!

    Not quite. You also need to set the mixing ratio as David said. So as well as M563 P0 D0:1, you also need M567 P0 E1.00:1.00 which will set both extruders to run at the same speed.

    To run both extruders, you simply select Tool 0 then do your G1 Enn move. To use a particular extruder, you would use the format G1 En:n. So for example, if you wanted to extrude 5mm of filament at 300mm/minute using extruder drive 0 only, you would do something like

    M83
    G1 E5:0 F300



  • Ok

    I did the mix ration but the G1 E5:0 F300 is running both extruders...

    Tried selecting tool 1 and run G command but still both run together.

    ; Tools
    M563 P0 D0:1 ; Define tool 0
    M567 P0 E4.0:1.0 ; MIXING RATIO
    G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

    0_1558433777672_Untitled.png



  • @cj-bravo That's odd - it works for me. Maybe it's because you have both extruders set to unity whereas I have a mixing hot end so the sum of all the extruders adds up to unity. Just guessing.

    For now, you could define 3 tools. One as you have it now and the other two simply use just one extruder.

    So as well as M563 P0 D0:1, also M563 P1 D0, and M563 P2 D1. No need to set mixing ratios for those other tools. Then selecting tool 0 will use both extruders, tool 1 will use extruder 0 and tool 2 will use extruder 1.



  • "set to unity" - what does that mean?

    I'll try your solution if nothing else works,
    Thanks!



  • unity = 1


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