Question using cura for Bfb 3D Touch

[Ikaru31 0]

Hey after weeks of try and error i finally got the old Bfb 3d Touch from my University to work with cura. But right now i have to change the gcode everytime i use extruder 2.

The Bfb 3D Touch can work with up to 3 hotends, currently equiped with 2 hotends. So far i got it only to work with 1 extruder at a Time, because f the following issue:

The bfb uses the comand M104 {prin_temperature} for hotend 1 and M204{prin_temperature} for hotend 2. But when cura changes the temperature it uses m104 everytime so only hot end 1 is heating.

My fix is currently to edit the gcode when i use extruder 2 and change every M104 to M204. But when i use both extruder at the same time i can not tell wich m104 has to change and wich not.

Sadly it didnt work to implement the m104/204 in the start gcode of the extruder.

Is there a way that cura uses the right m104/204 depending on wich extruder to use next?

 

Another minor issue i have is, that the flowrate has to set to 4700% and because of that the lines in the prview are so thick that you can not see whats going on. is there a way that cura does not refere to the flowrate for the line thickness in the preview or another way of setting the flowrate to a correct level?

 

 

[Ikaru31 0]

If there is someone also trying to use cura on a Bfb 3d Touch here is how i managed it to work:

create a standard fff-printer in cura

change start gcode to:

^Checksum: NO

^Time: 1234

^Ex1: PLA White

^Ex2: PLA white

^Ex3: None

M227 P3200 S3200

M105

M113 S1.0

 

change end gcode to:

M103

(</nestedRing>)

~M104 S0

M113 S0.0

 

Change extruder 1 Start gcode to:

;extruder 1

M106

M542

;start extruder 1 extruding

M107

M104 S{material_print_temperature_layer_0}

M106

M551 P57600 S600;priming p-extrudingmass s-speedofextrusion

M543

M101

 

Change extruder 1 end gcode to:

M103

 

Change extruder 2 Start gcode to:

;extruder 2

M542

;start extruder 1 extruding

M107

M204 S{material_print_temperature_layer_0}

M106

M552 P57600 S600;priming p-extrudingmass s-speedofextrusion

M543

M201

 

Change extruder 2 end gcode to:

M103

 

Printer settings:

x 395.0

y285.0

z201.0

origin at center

gcode Flavour

Bits from bites

 

Nozzeloffset x extruder 2 50mm

 

Print settings custom expert:

flowrate to arround 4700

uncheck infill bevore wall

Buildplate adhesion :none (Change in flowrate strangly does not apply here so its not extruding the raft until you change it manually)

 

slice your stl and save gcode

open the stl with notpad or simillar

open an .bfb made with axon and delete everything

Copie the gcode from cura in the .bfb file and save. This is necessary to avoid an file read error, may be possible to do otherwise.

 

At the printer  settings of the bfb you have to uncheck the chek file before printing