@dwuk I remember now, I've discussed the striped sections before on this forum. Was it you, who came up with it?
It was the same time I started using resin printers and immediately saw their advantages against FDM printing.
Opposite to the rounded corners you get with FDM, the resin-print edges are sharp and easy to glue together.
Unfortunately no multicolor prints, but ~10x smaller surface details possible. Plus: no problem with overhangs.
@gtrider I don't think 3D printing is in the main focus of this new regulations, although we could print illegal stuff.
But that's more a concern of the sites who host these designs.
@dogboy If you really need high accuracy, you can add positional sensors on the motor shaft(s) and the joint(s).
Closed loop is still pretty new in RRF, but once tuned in seems to iron out all accuracy problems.
Homing the arm once in a while will have a similar effect.
@dwuk I'm not sure if I understood.
If that's the case, why don't you build (4) individual printers and each one prints a section of the object?
You'll have to puzzle the sections together anyway, but that way it'll be way easier to setup mesh bed and all.
Plus, you don't need a huuuge bed, just to keep the toolheads clear
@dwuk Splitting the gcode file? 
I never thought of this as an option when I built the hashPrinter in 2021.
In my mind it was always the slicer who had to split the object, but that approach had it's own issues.
Your approach looks very promising, although I see lots of retracts/unretracts where the tracks were chopped apart. That can end up ugly, like tons of blobs everywhere.
And of course you'll run into tool collision situations and waiting for the other tool to finish the current layer while the waiting nozzle drools dry. (just as I did)
My idea to the latter problem was, to synchronize both tool speeds, so they finish work at the same time.
Maybe you want to add that in your splitting post processor?
BTW, my hashPrinter only required 4 steppers for the whole motion system ( plus 3 for Z and 4 for extruders) and all the belts where short and straight. Not such idle roller nightmare...
But lets not start a pi$$ing contest. There are pros & cons in both designs
@droftarts I think whiteboards are a good base for testing, but you want to have a permanent drawing on paper once in a while.
Over at the "maslow" thread we even talked about technical drawings on wooden panels (cutting lines and laser markings). Even drywall could be an option (very thursty surface, they might need different pens)
A portable "strap-on" version could be useful on many construction sites. (where to put electric and water-cutouts)
@yoshimitsuspeed If you'd be able to scan the surface continuosly, you'd probably find all the scratches.
But how do you know their profile (depths and shape) ? IMHO it's impossible to calculate the right amount of extrusion.
@T3P3Tony said in Duet Polargraph:
Next stop pen changing?
I guess the hard part of that is: keeping the unused feltpen tips fresh without drying out. (A wipe-zone is not an option, unless it's outside of the actual drawing area)
I imagine a revolver-like parking device which holds the pens and covers the tips.
Electromagnets would hold/release the pens instead of a clamping screw.
Is reversing the e-magnets polarity an option with Duets heater ports? (required to attract/repell a neodym magnet)
@droftarts said in Duet Polargraph:
What drawings do you want?
No need for drawings, I was talking about the drawings you made with it. Didn't remember seeing the dragon before.
Good luck in Manchester
Olaf
@droftarts I was noticed, you've edited a post, but couldn't find any big news.
Did you add the drawings lately?
THX
Olaf
I have at least three symbols on my keyboard looking similar:
' ` ´
Just wondering if it was a typo error? But then the FW upgrade seems to work, maybe it's more typo-tolerant ?
@Pertti I think btncmd (buttoncommand) is the better option for you.
AFAIK, you can build your own control screen and control Duet2 via buttons and sliders
@drivetrainsystems
Also use B and C values :
Additional parameters for linear analog sensors
Fn F0 = unfiltered (fast response), F1 = filtered (slower response, but noise reduced and ADC oversampling used to increase resolution). F1 is only available when using a port intended for thermistors, not when using a general input port.
Bnnn The temperature or other value when the ADC output is zero
Cnnn The temperature or other value when the ADC output is full scale
@edsped IMHO it wasn't false alarm.
I guess, when you started a new print while the fans where still running in thermal mode, they disappeared?
Although you reconfigured them to direct control at the start of the print?
Or was it the other way round?
Nevertheless, the fans (and DWC) should act the same in both scenarios.
@rqthree Nice find!
I started looking for a wood lathe and the turning tools I'd need and guess what I've found:
Wood turning Tungsten carbide round cutter
They come in different sizes from 8.9mm to 16mm dia. A set of 10pcs is ~18€ which would be a lifetime supply for our usecase
@lorenjz I'm sure it's possible.
I have built a 4-head printer and tested mirror mode on all 4 tools.
IDK if I used the official way of doing it, but by juggling with:
@gnydick Nice idea 
It could easily be adapted to
Just wondering, if it could also debounce the pushbutton for the first usecase
@fšk If I understood you correctly, you want to use the dials to find the right tool-parking path's and end positions?
But the panel doesn't show the actual position? Is it on a separate screen?
@Tinchus @dc42 I think, his intention is to constantly measure the slightly uncontrollable flow and change the printspeed instantly. (good bye planner queue)
@JoergS5 said in Can this 5-axis FDM be configured with RRF?:
built as spherical, i. e. the three axes cross in one point.
Just out of curiosity:
This crossing point is necessarily the tip of the nozzle? Or nozzle + layerheight?