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Wire-printing on a Delta?


peggyb

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Posted (edited) · Wire-printing on a Delta?

Can somebody help me before doing something stupid?

I did some little tests with wire printing (experimental tab) on the UM2+, this looks good and with some tweaking it is possible to achieve something acceptable.

5a3327d43f426_2017-02-2818_04_05.thumb.jpg.40284f2f9d1af7786fa5d10f4931b755.jpg

This is a 6 cm small torso, but I a have a big Delta printer available and want to try this at 50 cm (life size). Now I noticed with the UM2+ that the buil plate/z axes takes care of the 'wire' movements. With a Delta the bed is fixed and the arms move; does wire printing the same on a UM as on a Delta?

part of the gcode (think it looks good, doing z movements from Z1 to Z21 and back):

;LAYER:1

M106 S255

;TYPE:SUPPORT

G1 F1200 E6976.01195

G0 F2400 X1.346 Y97.167 Z20.1

G0 X1.346 Y97.167 Z1

G1 F1200 E6996.01195

G92 E0

G1 F326.1 X2.565 Y90.78 Z21.948 E20.18124

G1 F300 X-1.605 Y92.708 E24.77538

G1 X-18.285 Y100.424 Z1 E52.64252

G4 P500

G1 F150 X-18.285 Y100.424 Z2 E54.64252

G1 F324.3 X-19.46 Y92.783 Z21.95 E74.43592

G1 F300 X-23.827 Y95.183 E79.41896

G1 X-41.299 Y104.786 Z1 E108.33938

G4 P500

G1 F150 X-41.299 Y104.786 Z2 E110.33938

G1 F324.5 X-41.051 Y96.423 Z21.951 E130.34247

G1 F300 X-45.701 Y98.237 E135.33377

G1 X-64.303 Y105.495 Z1 E164.27609

G4 P500

G1 F150 X-64.303 Y105.495 Z2 E166.27609

G1 F322.7 X-62.94 Y97.041 Z21.952 E186.45901

G1 F300 X-68.124 Y96.723 E191.65275

G1 X-88.862 Y95.45 Z1 E221.15989

       etc.........

made a new machine in Cura 2.4 Delta style, entered the size and settings, the start and end code from the old Cura. Is there something else to change? This thing is big and I don't want a big mess...

5a3327d5b243f_2016-12-1517_16_05.thumb.jpg.72f346fb12bfb24d5fc043ced99c0bc5.jpg

5a3327d43f426_2017-02-2818_04_05.thumb.jpg.40284f2f9d1af7786fa5d10f4931b755.jpg

5a3327d5b243f_2016-12-1517_16_05.thumb.jpg.72f346fb12bfb24d5fc043ced99c0bc5.jpg

Edited by Guest
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    Posted · Wire-printing on a Delta?

    There's no reason I can think of it should not work, but first try to print a normal model using your delta with Cura 2.4. If that does not work, neither will wireprinting.

    Note that you may need to make some changes to the start/end gcode before it works with Cura 2.4; specifically most {replacement_patterns} have changed

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    Posted · Wire-printing on a Delta?

    Thanks for answering..

    I copied the sart and end code from 15.04, does it look OK? (no idea what you mean with {replacement_patterns}...)

    start;

    ;Basic settings: Layer height: {layer_height} Walls: {wall_thickness} Fill: {fill_density}

    ;Print time: {print_time}

    ;Filament used: {filament_amount}m {filament_weight}g

    ;Filament cost: {filament_cost}

    ;M190 S{print_bed_temperature} ;Uncomment to add your own bed temperature line

    ;M109 S{print_temperature} ;Uncomment to add your own temperature line

    G21 ;metric values

    G90 ;absolute positioning

    M82 ;set extruder to absolute mode

    M107 ;start with the fan off

    G28 X0 Y0 ;move X/Y to min endstops

    G28 Z0 ;move Z to min endstops

    G1 Z15.0 F{travel_speed} ;move the platform down 15mm

    G92 E0 ;zero the extruded length

    G1 F200 E3 ;extrude 3mm of feed stock

    G92 E0 ;zero the extruded length again

    G1 F{travel_speed}

    ;Put printing message on LCD screen

    M117 Printing...

    end:

    M104 S0 ;extruder heater off

    M140 S0 ;heated bed heater off (if you have it)

    G91 ;relative positioning

    G1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure

    G1 Z+0.5 E-5 X-20 Y-20 F{travel_speed} ;move Z up a bit and retract filament even more

    G28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way

    ;M84 ;steppers off

    G90 ;absolute positioning

    ;{profile_string}

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    Posted · Wire-printing on a Delta?

    Off the top of my head, {travel_speed} should be {speed_travel}. The others don't seem to be have a functional effect because they are commented out.

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    Posted · Wire-printing on a Delta?

    the default Delta start code is:

    G28 ;Home

    G1 Z15.0 F6000 ;Move the platform down 15mm

    ;Prime the extruder

    G92 E0

    G1 F200 E3

    G92 E0

    should I use this one?

    it does say the same in values... although the description should not say: move the platform down... because it can't..

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    Posted (edited) · Wire-printing on a Delta?

    @ahoeben

    you're reply was faster then my reply...

    the default start code has a fixed F6000 (too fast for this printer)

    so changing the "{travel_speed} should be {speed_travel}" would be enough?

    Edited by Guest
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