Mini Kossel - WORKING! (changed from Kill Me Now)

Eddiie

HI!

1. I will redo the slice and try again.
2. M567 .. Even though I have one hotend but 3 extruders, I have 3 tools defined. M567 needs to be set for all 3 tools? meaning there will be 3 m567 lines? Why would one want to enable mixing on some extruders and not others? Perhaps if someone wants to allocate one extruder for support material?

Can someone share with me some M567 commands for the 16 colors? I would also be happy with M567 commands that would test each extruder (CMY in my case)

3. The last command in my config.h file is t0
It seems like it ignores the M109 command which is included in the sliced gcode file.
Are you saying

M109 S208 ; wait for temperature to be reached

should read

M109 S208 T0  ; wait for temperature to be reached

```?

Have new shroud with smaller surface area, might test tonight.

Still have extruding issue, too much extruding, causes backup and grinding, then retraction hits, sometimes it is grabbed again after the grinding occurs and sometimes not.

When hotend moves around slowly the extruding seems ok, but when moving quickly, it seems to feed too much.

Eddiie

Update:

I am printing the calibration cubes. At first I was having trouble even printing the base, but I issued a T1 to change to a different extruder and it is printing beautifully!! Something with Extruder0 is causing binding, possibly the throat. Will check it out later just so happy to see something printing.

Pulling 10amps with hotend and hotbed and motors and fans and etc… wires are warm to hot, don't want to run it too long.

It looks like extrustion is set perfectly (on extruder2)

happy dance

dc42

@Eddiie:

Update:
Pulling 10amps with hotend and hotbed and motors and fans and etc… wires are warm to hot, don't want to run it too long.

I presume you mean the wires between the PSU and the Duet. What gauge wires are you using?

deckingman

@Eddiie:

HI!

…........................
2. M567 .. Even though I have one hotend but 3 extruders, I have 3 tools defined. M567 needs to be set for all 3 tools? meaning there will be 3 m567 lines? Why would one want to enable mixing on some extruders and not others? Perhaps if someone wants to allocate one extruder for support material?

Can someone share with me some M567 commands for the 16 colors? I would also be happy with M567 commands that would test each extruder (CMY in my case)

........................

Read back a few posts - I've offered once but won't do it again

Ian

Eddiie

I was successfully printing with 2 of the 3 colors. All my diamond hotend nozzles are knock-offs and have one problem or another.
Tired of this, finally ordered an official diamond hotend nozzle. It will be a couple of weeks before it arrives.

Does anyone else out there have a diamond hotend? Do you use the V6 heatsinks/throats? I find the previous version of the heatsinks and throats work better and the V6 one's. Anyone else agree?

Has anyone with a diamond hotend used it to print with ABS?

Is there a reprap firmware color mixing wiki somewhere I can look at to become familiar with it?

deckingman

You can lead a horse to water…............

T3P3Tony

Eddie, deckingman (Ian) is the resident expert on this. We are planning on doing a blog post/wiki about it but I have had a couple of other things get it the way. In the mean time he has offered to send you a document with loads of info….

Eddiie

Update: – 5 months later --

Wow, hard to believe it has been 5 months since I started this post. The printer was getting to me to I sat it aside to work on other projects. Completing those projects I took another look at the Mini Kossel. Good move...

First, Deckingman, I will send you a PM re- color mixing extruder document. I totally missed the message, just saw it now.

I moved to yet another Diamond Hotend effector / carriage. It moves the connecting rods back down to the bottom near the print head which seems to have better control. While doing this, it was discovered that one of the carbon fibre rods were stripped, causing the tilt, bad calibrations, frustrations... Using metal rods now, everything works so much better!!! Stripped rods, could not tell because of the heatshrink tube covering the ballend and rod.

While the printer was in the corner taking a timeout, I took a closer look at the filament; it turns out despite ordering PLA, they sent ABS Cyan... Mixing PLA and ABS, no wonder Cyan kept jamming. AARGh. Fixed.

Over the months, cleaning boxes, organizing stuff, I find 5 china diamond hotends.. So many failed attempts; what if I ordered an official diamond hotend for a change?? Ordered one. Official Diamond Hotend is roughly 40% SMALLER than the China clones... It also does not have a screw to hold the heater (or thermistor) in place. Ok.

Did not like where the filament spools hung (putting weight on the upper frame) so I moved them to the sides and put the extruders up top.. Got new stepper motors for extruders and made spinners to help feed filement through the tube. Sore fingers after feeding 3 tubes and turning little tiny wheel. Yeah, could have used software to extrude..

Filament jamming before entering nozzle. GRRR this one took me a couple weeks to figure out, many different throats / heat breaks, despite the answers being written in clear text, finally settled on pass-thru throats that pass the tubing all the way to the nozzle. Also had clogging because the tube was not fitting all the way into the nozzle. Eventually I fingered it out, unclogged everything one last time (you need to keep all filament inlet holes filled and pressured - so frustrating.

FINALLY!! The head and effector track level across the bed! Upgraded the firmware to 1.18b3, so many changes, lost in the release notes, but I was able to print a 3dbenchy successfully in 1 of each of the 3 colors. The results were not the same! Different extrusion amounts it seems.

Now I am re-working the IR probe mount, added a servo motor to the effector also.. prototype is printing now; takes about 6 hours to print - might just carry on without it, dont want to mess with removing the filament and reseeding the head again. Using official head, maybe use a China one and have it on standby..

I used the PanelDue for 90% of all this tuning, heating, moving, probing, extruding, switching between tools/extruders, it was an invaluable tool, but it still needs some development to make it more of an extension of the Duet(Wifi) board.

Is it time to change the topic of this post?

deckingman

You don't need send me a PM. The blog was written and published months ago, first on Tony's blog then on my own blog so the information is all out there. Here is a link to my blog https://somei3deas.wordpress.com/2017/01/11/using-the-diamond-hotend-with-duetwifi/.

As you say, 5 months is a long time so you'll likely find all the answers to any questions you have on these forums. There is some other stuff about using the Diamond on my blog as well.

HTH

Ian

T3P3Tony

Eddie, looks like you are making progress! Feel free to change the post topic if you like

Eddiie

I changed the topic!!!!!

On to dimensional accuracy… New post.

Thank you all.