Delta with diamond hotend using Duetwifi
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Hi Fcwilt
Thanks for the quick response.
My machine is set and mounted but problem is how to setup tools I want to setup 10 different colors with 3 extruders. put the tools in the config.g but failed to successfully print because the slic3r does not recognize those tools and I don't want to post process the g code.
HimHi,
I cannot help you there as I have not reached the stage where I can try to print something.
Getting close. I got the Diamond 3 color mounted and it seems to be moving smoothly. I don't have a working z-probe but a manual 4 point calibration (center and each tower) indicates that things are good in that department.
Tomorrow (Wednesday) I will be working on mounting the three extruders and then I can begin checking the basic workings of the Diamond (heating, filament feed, etc).
Frederick
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Have you read https://somei3deas.wordpress.com/2017/01/11/using-the-diamond-hotend-with-duetwifi/ ? It's not a delta, but most of it is about how to use the Diamond with RRF.
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Deckingman (Ian) is really the expert here, have a look at this blog post:
https://somei3deas.wordpress.com/2017/01/11/using-the-diamond-hotend-with-duetwifi/
In summary you configure a tool for each ratio of mixes you want to use, then in the slicer each part of the multi part model is assigned to be printed with that tool. You don't need to post process the gcode using this method (although Ian has some cool post processing stuff to make sharper colour changes in future blog posts).
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The question is: does slic3r know how many virtual extruders you have?
IIRC you have to type in the tool number directly in the settings menu, the drop down menu only shows 4 tools… -
I am.not sure about slic3r specifically but this discussion implies you can have many:
https://www.duet3d.com/forum/thread.php?id=1335 -
I've successfully retrofitted a Geeetech Rostock 301 with a DuetWiFi/Duex 5. I started out using a single tool definition with an equal mix because I didn't know how to do much else, but then I was fortunate enough to see Ian's post and his work recently.
In short it works fine (thanks Ian!), but I'm struggling with the last part of the delta implementation, auto leveling using a BLTouch. The probe itself is working fine as far as I can tell and I'm able to execute a 6-factor level or mesh grid compensation without any faults. The problem is that it doesn't level movement of the hot end. It goes too low sometimes and dives into the bed, too high sometimes and loses contact. The output of the BLTouch is consistent though and that is evident in the height map. I execute a G32 before printing without homing. I'm getting to the end of what I know to do.
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Hvashist, to answer your question, you have to define the tools in Slicer as additional extruders. They all have the same offsets of course, but you assign the colors corresponding to the mixes you have set up. That's how I did it and I believe how Ian explains it. Tool 3 in the firmware becomes Extruder 4 and I assign it to the part on the platter.
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The question is: does slic3r know how many virtual extruders you have?
IIRC you have to type in the tool number directly in the settings menu, the drop down menu only shows 4 tools…Slic3r doesn't care what extruder (tool number) you select to print with. You don't even have to define that tool in Slic3r. That is to say, if you have 3 extruders, once you have loaded all the parts, you can then go through and assign any tool (extruder) number you like to each part. The drop down gives the choice of "default" or any number from 1 to 4 but you can type in 99 or 999 (haven't tried any higher). All slic3r does in insert the tool number into the gcode file at the right place. So, for example if you have two parts and assign extruder 99 to the first and extruder 999 to the second, then slice it, the gcode file will T98 and T998 embedded in it at the start of printing for each part.
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Have you read https://somei3deas.wordpress.com/2017/01/11/using-the-diamond-hotend-with-duetwifi/ ? It's not a delta, but most of it is about how to use the Diamond with RRF.
Yes I read this. This document is actually was the base of my build.
Thanks -
Ian -
nice that this topic was already raised; saves me some typing :). Question relating precisely to this thread, which is do you see any hurdles presented by trying to commission a diamond hotend on a delta? Particularly weight, influence of effector angle caused by torques imparted by the Bowden tubes which will need to follow along with effector. I guess I'm trying to ask why you haven't used a delta for your awesome work. Do you anticipate problems or challenges due to the kinematics of the machine?
Thanks,
Jonathan
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Ian -
nice that this topic was already raised; saves me some typing :). Question relating precisely to this thread, which is do you see any hurdles presented by trying to commission a diamond hotend on a delta? Particularly weight, influence of effector angle caused by torques imparted by the Bowden tubes which will need to follow along with effector. I guess I'm trying to ask why you haven't used a delta for your awesome work. Do you anticipate problems or challenges due to the kinematics of the machine?
Thanks,
Jonathan
Hi Jonathan,
I know very little about Deltas so probably won't be much help. I'd guess you've already summed up the issues - "weight, influence of effector angle caused by torques imparted by the Bowden tubes". I doubt you'd be able to get the extruders as close to the hot end as I have managed on my corexy with separate extruder gantry so you'd likely have long Bowden tubes. That might help in that they would be less likely to pull the effector out of alignment. I'd imagine that a Delta would be much more sensitive to the weight of the hot end than my CoreXY and the Diamond assembly alone is about 250gms.
Ian
