Posts made by 3D_low

Hey,

I'm looking for the right way to control the bed heaters. I have a heavily modified CR10-5S fitted with 4 bed heaters. Right now i'm assigning all heaters and sensors to a single tool and commanding temp changes with G10.

Is there a way to make the duet believe that all my heaters are the bed?

; Bed1 parameters (X-Y-)
M140 P7 H7
M305 P7 X7 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 3
M143 H7 S125 ; Set temperature limit for heater 0 to 125C
M570 H7 P420 T10 ; heater fault detection

; Bed2 parameters (X-Y-)
M140 P4 H4
M305 P4 X4 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 3
M143 H4 S125 ; Set temperature limit for heater 0 to 125C
M570 H4 P420 T10 ; heater fault detection

; Bed3 parameters (X-Y+)
M140 P5 H5
M305 P5 X5 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 3
M143 H5 S125 ; Set temperature limit for heater 0 to 125C
M570 H5 P420 T10 ; heater fault detection

; Bed4 parameters (X-Y-)
M140 P6 H6
M305 P6 X6 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 3
M143 H6 S125 ; Set temperature limit for heater 0 to 125C
M570 H6 P420 T10 ; heater fault detection

; Chamber heater parameters
M141 H0 ; heater 4 is the chamber heater
M305 P0 X2 T98640 B4632.86 C9.4861662E-08 R4700 H0 L0 ; heater 2 is monitored by a 100K thermistor with B=3950 and a 4.7K series resistor
M307 H0 B1 ; use bang-bang control for the chamber heater
M570 H0 P900 T5 ; heater fault detection

; Extruder parameters
M305 P1 X1 T98640 B4632.86 C9.4861662E-08 R4700 H0 L0 ; Dyzend thermistor parameters
M143 H1 S315 ; Set temperature limit for heater 1 to 280C
M307 H1 A418.3 C117.5 D4.8 B0 ; Set PID value for H1 (extruder heater)
M570 H1 P120 T15 ; heater fault detection

; Tools
M563 P0 D0 H1 ; Define tool 0
G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
G10 P0 R150 S0 ; Set initial tool 0 active and standby temperatures to 0C

; Tools
M563 P5 H4:5:6:7 ; Define tool 0
G10 P0 R50 S90 ; Set initial tool 0 active and standby temperatures to 0C

Thanks David for the answers.

Getting an answer for a problem like this on a Sunday... Guess this is why i'm at my 5th board from you guys Much appreciated

12V power, 1.04.

Like i said, the board was working fine until the DueX was added. I've looked over the job when i was programming the Duex2 outputs and saw various corners rounded, damaged connectors and wires improperly crimped which leads me to believe it's a screw up.

Can I just run it off USB power for the moment until I get it fixed?

David,

It is a genuine one. However, clearly my employee screwed something up while installing the thing. I wonder what he did...

David,

There is a jumper on the INT_5.

The small U3 chip appears to have a small "bump" on it. I'd say it does looks lightly damaged

I've had my employe install the duet wifi with a duex2. Duet was previously working.

Problem i'm getting right now is i need to plug the Duet with USB in order to get 3.3v and 5v. I've checked fuse on it and unplugged everything to see if i had a possible short and no luck.

If i power up the Duet strictly on 12V from PSU i don't get the red/green less to light up. If i plug USB i get a normal behaviour.

Any ideas?

Thanks for the answer guys. I think i've got a pretty clear idea of how i'm going to pull it off. Also i just received a funding confirmation so i'll be working on this pretty soon

@dc42

Yeah that could be done but I would need additional stepper drivers. Is it possible to use multiple duex boards?

To answer the other questions : this machine will be of big size (600x600) so dual print becomes available. I’m making a lot of molds for a foundry where I have to print 2 identical parts. An idex printer would allow me to cut the cost and lead time for my customer while raising my profit margin.

I’m using a dyzextruder since I plan on using a heated chamber. Those things are incredibly reliable and robust and will also allow me to print high end materials. I quickly estimated the weight of an additional dyzex + x-motor setup to roughly 650g. Shaving this off the axis would allow faster accélérations and considerably cut print times. Most parts i print for my customers are over 20 hours so a 10-15% reduction in print time is considerable. As for complexity, I don’t really see where the challenge is there. I would only need an additional set of linear blocks, another Y motor/belt and a set of pulleys.

Here's a sketch of what i'm thinking about.
Extruder move on the X axis like they would normally but each "X-bars" has it's own Y motor making the thing an idex printer. The main advantage of this would be the weight reduction of the x-bars.

It would of course need a DueX5. One could also decide to put in a 3rd bar and use 1-Z, 3-X, 3-Y,3-E motors and take full advantage of the DueX5. It would however need strict rules to prevent crashes

@dc42
If you ever need some other french translation, i can leave you my email, i'd be glad to help. I'm not constant on the forum so sometimes i might miss out something. If you email me you're sure to hear back from me in a couple hours. Let me know

En attente
Dernière modification
Temps d'impression estimé
Temps d'impression simulé

Standby could be "en attente" meaning it's waiting or you could also write "En veille" which means it's currently working but not active, sort a like a computer that goes to sleep... IF you have further questions feel free to ask.

Did anyone pull that off yet? i havent found one on the net.

I'm talking about a printer that would be similar to the Sigma but with individual X and Y motor for both extruder. One benefit would be the weight saving on each gantry bar. Disadvantage would be the need for another belt and another X axis bar / linear guide. Rest of the printer is pretty much the same and as compact.

Anyone?

@robm

The flex cable is slowly moving inside the tubing. I realized that the nimble casing is not closing itself properly. Perhaps the casing deformed when I printed ASA with it.

https://youtu.be/G2Nf2hVhOwI

Video showing what seems to be the issue. The vibration in the cable is the same even if the nimble is unmounted or not pushing filament.

@robm said in Weird extrusion issue:

@3d_low said in Weird extrusion issue:

I have an exact same machine right beside this one and i don't have this issue.
... It seems to have started when i started printing PETG

Please just confirm, same filament with same settings on the other printer does not show the issue?

Nop, the other printer is fine. I’ve tried multiple filaments and it’s really just this machine. Config is copy pasted (except PID settings which are close and machine name). Both machines are exact twins

Hey,

I've ran across a weird issue on one of my machines. It seems the extrusion becomes inconsistent for unknown reason. I have an exact same machine right beside this one and i don't have this issue. It's not related to any axis because the pattern repeats in a spiralling motion.

Temperature is constant at the dyzend, nimble is properly installed, extrusion length is calibrated, layer fan is off, printer is all square, z rods pulleys are centered, i've deactivated auto-levelling compensation, changed nozzle, tried different materials, played with slicer settings.

The problem appeared lately... It seems to have started when i started printing PETG but i disassembled the hot end and cleaned it and switched to a new nozzle. On the blue part when i raised the extrusion factor from 100% to 102% the pattern started to show. Any ideas?

@justine-haupt said in Large Format Printer:

Whoa thanks everyone. I'll take some detail shots of the toolhead mount soon. Also been debating about whether to publish the BOM and design files.

By the way, that big black bowl-looking thing is half of an integrating sphere.

I'm curious at how you made your cost structure for big parts.

I'm also looking into building a big machine like this for some of my customers that need big parts (mostly for investment casting).
However my actual cost structure (excel sheet) gives me ridiculous prices. I figured that since i'm outputting a lot more plastic per minute (1.0mm vs 0.4mm nozzle) the cost should be adjusted but was curious to see how other figured this out

BTW, loving the quality of the build here. Everything seems well thought. Have you considered using some insulation panels on the side instead of just the plastic sheet?

@deckingman yeah I saw that one a while ago. Interesting build really.

It’s starting to take shape in my head. I’ll have a bit of testing to do but I think I have a good idea of how I’ll pull it off

Hey guys thanks for the inputs.

I would personally prefer a Cartesian type printer (to simplify construction and dual extrusion). I’m curious how you guys did the Z axis? Moving bed or moving gantry? Multiple Z motors or huge belt going to all threaded rods? 3 or 4 rods?

I was also thinking that just using insulation and heating to whole chamber to 50-70C would be easy with some kind of small heater. That way, a huge glass sheet backed by aluminum extrusions could be used for the bed and would make it lighter to move

Bringing fresh air for the layer fan and hotend cooling would be a matter of having a flexible cpap tube going to the hotend or something in those lines. Warping would be almost inexistant with a chamber controlled printer

Thoughts on this? Also, if you guys wanna it me up by PM feel free.