Duet3D PCB delta printer effector sneak preview
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Once we have finalised the design I will publish the dimensions
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Do you guys have any ETA on this? I'm really excited about it, looks perfect for what I need.
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See my previous post.
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Six weeks, sorry. I was a little overzealous!
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Just stumbled across this thread and flipped through the pages without reading every line, so I apologize, if that has been asked before:
Have you considered putting LEDs on the PCB-bottom? -
Have a look at https://duet3d.com/wiki/Smart_effector_and_carriage_adapters_for_delta_printer you will see if you scroll down to the underneath pic of it that there is indeed LED's on the bottom surface as well as 2 showing thru the top to indicate Hotend on and Sensor trigger.
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I'm in for one once this gets going as well.
I know adding an IMU was discussed earlier for autolevelling and calibration purposes, but I would another potential use as well: magball disconnect detection. It should be very easy to tell if the effector goes out of level by more than 10 degrees or so, and shut down the printer so no more damage is done. I would take an IMU on board for that purpose alone.
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David, what sort of accuracy/repeatability results are you finding for fully assembled ball-ball spacing across rod pitch and array angularity as well as ball planar relations? Standard PCB hole-hole tolerance is +/- 0.10mm. Add to that slop in the ball stud hole fit, ball-to-stud concentricity ( don't know how Haydn specifies this ) as well as PCB warp and stud flange face to ball center. Serious tolerance budgeting - it might be interesting to see what a three sigma distribution looks like. On the other hand deltas often seem to work fairly well even with some pretty low tolerance angle ball stud (ugh!) printed effector platforms.
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Wow…I've just now noticed this topic. What a stunning design, I really love the concept!
I was just planning on refitting my delta with wider rod spacing and a piezo Z-probe effector, but I really like this design better than any printable one. For folks with machines like my UltiBots 250 V-Slot...how would we go about mounting the carriage adapters to our existing wheeled carriages like these?
https://github.com/UltiBots/K250VS/blob/master/Experimental/umbee_carriage_45.stl
Also, if you haven't already is there any chance you could work with the Zesty Nimble crew so they can design a mount for this new heatsink/effector arrangement?
Cheers!
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Wow…I've just now noticed this topic. What a stunning design, I really love the concept!
I was just planning on refitting my delta with wider rod spacing and a piezo Z-probe effector, but I really like this design better than any printable one. For folks with machines like my UltiBots 250 V-Slot...how would we go about mounting the carriage adapters to our existing wheeled carriages like these?
https://github.com/UltiBots/K250VS/blob/master/Experimental/umbee_carriage_45.stl
Also, if you haven't already is there any chance you could work with the Zesty Nimble crew so they can design a mount for this new heatsink/effector arrangement?
Cheers!
Just go buy linear rails and enjoy the precision
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OpenBuilds precision V-Slot and Delrin rollers vs cheap Chinese linear rails? No thanks…
@CaLviNx:
Just go buy linear rails and enjoy the precision
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The carriage adapters have the usual 4 mounting holes on a 20mm square to attach to standard linear rail sliders or Kossel wheeled carriage trucks. If the two holes on one side of that carriage are 20mm apart, then I guess you could drill another hole in the carriage adapter for the single hole on the other side of your carriage.
Having first used wheeled carriages and then switched to linear rails, I prefer the rails too.
We have a couple of beta users who are investigating how to mount the Nimble on top of the effector.
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Thanks David. Those 3 holes are for the wheels themselves.
But it looks like switching to something like this could work if I can find a printable belt fastening mechanism:
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Hi David,
I have a linear rail carriage with mounting holes on a 26 mm square.
Is it possible to have carriage adapters with no mounting holes so I can drill them using a printed jig?Regards,
Vasan -
I think it would be possible (just) to drill 2.9mm holes with 26m centres in the existing carriage adapters. You would have 1.5mm between the inner edges of your new holes and the outer edges of the existing ones.
What size linear rails use 26mm mounting centres?
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Thanks David for the reply! I might have to be extra careful.
I have ARC 15 MN carriage blocks. Here is the link:
https://www.dold-mechatronik.de/navi.php?a=45382⟨=eng -
I forgot to mention that the 26 mm square mounting holes are M4 in size instead of M3. So, I think only undrilled carriage adapter will work for me.
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OpenBuilds precision V-Slot and Delrin rollers vs cheap Chinese linear rails? No thanks…
@CaLviNx:
Just go buy linear rails and enjoy the precision
Who said anything about buying cheap Chinese ?
I got genuine hinwin rails through work
http://www.hiwin.co.uk/product-category/linear-guideways/hg-series/
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Any more news on a release date for these. Very interested in one
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Looking like early next month.
