Help: Single Color models coming out a mix

lmcmulle
Posts: 31
Joined: Sat Nov 30, 2019 10:54 pm

Help: Single Color models coming out a mix

Post by lmcmulle » Sat Nov 30, 2019 11:10 pm

Hi,

Just got my A20T... looks to be a fantastic unit. I'm still playing around with test prints. When I do a single color test print (say a D&D figure which Is supposed to be all white) it actually comes out as a merge of all three colors loaded.

I'm using Cura 4.4.0 - I followed the setup instructions and loaded the cura profile as instructed. the start up code seems to be creating a tool that mixes all the colors presumably to prime and clear the hot end, so I wonder if it's not switching back or something? if I manually adjust the mix after it starts printing it continues fine.

My start up gcode is (per your instructions):

Code: Select all

G28
G1 Z15 F300
M107
G90
M82
M104 S215
M140 S55
G92 E0
M109 S215
M107
M163 S0 P0.33
M163 S1 P0.33
M163 S2 P0.34
M164 S4
G0 X10 Y20 F6000
G1 Z0.8
G1 F300 X200 E40
G1 F1200 Z2
G92 E0
G28
Thanks.

User avatar
Admin
Posts: 267
Joined: Wed Nov 30, 2011 9:49 am

Re: Help: Single Color models coming out a mix

Post by Admin » Mon Dec 02, 2019 11:01 am

Hi, Can you provide specific operation videos?
So that we can better solve the problem

ericarenee
Posts: 16
Joined: Fri Nov 29, 2019 2:05 am

Re: Help: Single Color models coming out a mix

Post by ericarenee » Tue Dec 03, 2019 8:17 am

That setup Startup g-code provided by geeetech for the a20t printer..
Where you copy and paste over the stock fff printer code is for mixing color prints. In order to get Just Single color or Multi color NOT MIXING Prints add another printer in Cura using the same procedure But not doing the G-Code copy and paste.. If you want a single color be sure to turn off the other two extrudes you are not wanting to print from . There is a small check box inside there setup.Highlight your model right click and choose the extruder associated with the color you wish to print.

Also

You will have to set all temps in cura to the temp you wish to print at. TO PRINT MULTI COLOR (NOT MIXED YOU WILL ) NEED TO Click on extensions post processing and add the find and replace . Find box should be M104 Replace box ; ..

This will tell the printer to not shut the heater off close to the end of the print (A BUG WITH MULTI COLOR (NOT MIXING) .

Do not add the find and replace script if your not going to be there to watch your printer . The printer will NOT Turn the heating of the hot end on its own.. Just reset the printer or turn it off and back on .
There is more about this in my post in this forum..

Erica Renee.. New to GEEETECH A20T But not 3d printing..

lmcmulle
Posts: 31
Joined: Sat Nov 30, 2019 10:54 pm

Re: Help: Single Color models coming out a mix

Post by lmcmulle » Sat Dec 07, 2019 12:33 am

Thank you Erica!

So to make sure I understand:

* I should have 2 printers set up 1) for mixing and 2) for single or multicolor prints.
* for the "Mixing" version of the printer, I use the gCode provided
* For the "single" or "multi color" version I use the standard gcode that comes with Cura.
* Also for "Single/Multi" version I need to add a code not to turn off the heat

Do I understand correctly?

Thank you so much for your help.

Leigh.

ericarenee
Posts: 16
Joined: Fri Nov 29, 2019 2:05 am

Re: Help: Single Color models coming out a mix

Post by ericarenee » Sat Dec 07, 2019 6:13 am

Yes this is correct.

i am having issues with Printing 3 color prints.. There is a work around i posted . Geeetech sent me a hex file that is supposed to solve the issue but i have yet to get it to flash onto my printer..

User avatar
vert
Site Admin
Posts: 971
Joined: Wed Nov 21, 2018 3:50 pm
Location: Marlin Dev
Contact:

Re: Help: Single Color models coming out a mix

Post by vert » Mon Jan 06, 2020 2:59 pm

i have the A20T and running my marlin 2 build 460 on it the link is in my signature to my main post & GitHub & YouTube.
i personally prefer cyclops rather then mixing control system on my 2 in 1 and 3 in 1 hotends it has far less issues then mix.

lmcmulle
Posts: 31
Joined: Sat Nov 30, 2019 10:54 pm

Re: Help: Single Color models coming out a mix

Post by lmcmulle » Sat Jan 18, 2020 3:59 am

vert wrote:
Mon Jan 06, 2020 2:59 pm
i have the A20T and running my marlin 2 build 460 on it the link is in my signature to my main post & GitHub & YouTube.
i personally prefer cyclops rather then mixing control system on my 2 in 1 and 3 in 1 hotends it has far less issues then mix.
Can you explain some for those of us still learning whats cyclops?

User avatar
vert
Site Admin
Posts: 971
Joined: Wed Nov 21, 2018 3:50 pm
Location: Marlin Dev
Contact:

Re: Help: Single Color models coming out a mix

Post by vert » Sat Jan 18, 2020 4:36 am

cyclops & mixing extruder are features of marlin they can both be used on any multi in single out extruder.
cyclops came first it is older and had much greater support in all slicers it directly controls the motors.
mixing came later it was added to marlin 2.0 about 1 year ago and marlin 2.0 was officially released only recently.
before this mixing was a geeetech exclusive feature they put in there fork of marlin 1.1.8.
it will be some time before slicers catch up with greater support for mixing.

lmcmulle
Posts: 31
Joined: Sat Nov 30, 2019 10:54 pm

Re: Help: Single Color models coming out a mix

Post by lmcmulle » Sun Jan 26, 2020 1:44 am

Aside: I looked for your firmware... Do you happen to have a precompiled version of marlin 2.0 that supports BLTouch and OctoPi? my 1.1.8 BLTouch firmware killed my octopi connection to the A20T

User avatar
vert
Site Admin
Posts: 971
Joined: Wed Nov 21, 2018 3:50 pm
Location: Marlin Dev
Contact:

Re: Help: Single Color models coming out a mix

Post by vert » Sun Jan 26, 2020 5:17 am

i don't offer any pre compiled copy's GPL compliance is easier that way.
i can tell you that octoprint works fine on my a20t

Post Reply

Who is online

Users browsing this forum: No registered users and 3 guests