cheers thanks again

🐵 Merci pour eux !

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@dc42 said in One-press resume printing after power failure:

There is no guarantee that the Z hop in your power fail script will be completed, because the power reserve might run out first.

Yes - I'm fully aware of that. But I feel like taking a risk today 😄

@zakfarias i don't have any experience of the sigmax but if you want to see if you can keep the features tou like then break them down into steps that releate to individual gcode moves and confirm you can write macros for those. Some of those macros will probably be RepRapFirmware system macros in the end - like homing or tool changes, others will be custom user macros (like determining tool offsets).

@t3p3tony said in Duet 2 v1.04 and Sale!:

@calvinx for the bed it's straight forward to add fuse in the circuit, done not have to be in the bed. Those people using high power beds also sensibly add thermal fuses etc.

For the hotend heaters once again a fuse can be added into the circuit. For the stepper motors it's not as straight forward but also. lower risk.

I already have thermal fuses to all my beds as they are on A/C with SSR's.

I will study the pdfs and compare, added protection is always nice if not 100% always required.

thanks for the prompt reply.

@t3p3tony I thought it was joke, or maybe the OP forgot what forum he was on. My post was certainly a joke - definitely not to be taken seriously☺

@peirof said in What "Forum" its this:

Hi,

I would like to insert images in some posts ... but I have tried with the system of the previous forum, and I could not ...

It was to know which forum is the current, to see if there is any way to insert images ...

To answer the specific question its NodeBB (thanks to @MSquared for the setup!)

and (atl east on chrome on windows) I can paste images into the post.....
0_1531752946446_ae85138f-b510-4078-8f5e-62f9e4390f9e-image.png

Like that!

@dc42 ty again sir! shes choochin proper now

@ctrdevelopments you would need to find a board to multiplex the step/dir (and maybe enable/) signals from one of the external driver outputs to multiple stepper drivers. I think Prusa might have something like that on his multi material adding but not sure.

FYI: I created a tool to take timelapse snapshots on every layer change: https://forum.duet3d.com/topic/6058/timelapse-pictures-videos-with-duet-and-webcam-on-layer-change

Look for cables meant for professional audio. They are sturdy, flexible and made to receive bad treatment. You will find at many gauges and wire count.

so..get yourself a Tevo Little Monster...as its a delta..a duet is like nitro injection 😉
Anycubic 8Bit...60mm/s ( depends on Board and mechanic )
Duet 32bit 60x60x5mm Cube 240mm/s

On most Cartesian Printer a 8 bit Board is still enough. Main reason for a Duet there..simple handling..Web Control..built in Wifi..so more luxurious reasons

Excellent, thank you!

I managed to get it working again, though I may have been 1 layer off, its at least printing now and seems to be doing a fine job sticking to the previous layer.

https://forum.duet3d.com/topic/4778/restart-print-at-specified-layer/3

So in the end, the M26 S number for your corresponding line is found in your gcode file by opening your G-code file in Notepad++ and ticking "Offset"

After this print, I will try the m110 command on a test piece, thank you Anzere

That's right dc42. I have a CoreXY and defenetly it's a problem on DWC latest release. I did the downgrade and now it's working fine. Thanks

@phaedrux I hadn't seen them; I'll start using them straight away. Thanks again!

I've come to the conclusion that the filament I was using was simply terrible filament. I've stopped printing the model I was trying to (1st pic below) and have just taken delivery of some Filamentum Extrafill PLA which has shown absolutely no stringing whatsoever with your settings. The 2nd pic is the temp tower test I did (literally the very first print with this new filament)

Note: I did dial down the retract speed for the first print 7200 -> 2400. I am new to this filament and not being familiar with it led me to lower the retract speed until I learn more about its viscosity. I didn't want it snapping with high speed retracts.

Looking at the 2nd pic suggests to me that I need to introduce some negative R values as the point after a retract seems to over-extrude a bit. The whole print is generally over extruded but that's the next task now I know the print temp..

0_1531311245908_20180710_162129.jpg

0_1531311253538_20180711_130518.jpg

Thanks for all your responses. To sum up what I have taken from this:

A 240W PSU will only ever be a 240W PSU independent of output voltage. That means at 12V it will be able to provide 20A and at 15V it can only provide 16A. I mean this are the designed limits what it is built for. It might handle higher outputs but it is rather likely to break in any way if done often or over a prolonged period of time. So to stay safe never exceed the rated power.

At the same time increasing the voltage will increase current drawn by any heater (or anything with a fixed resistance) with the same factor as the voltage increases. This will be problematic if this increase will excess the capacity of the PSU as described above.

In my specific case it could be critical to turn the PSU up to 15V as my heated bed would also draw around 15A while heating up (reducing the draw when going to only sustain the heat though) what would be very close to the limit the PSU is able to handle.

Regarding cooling: I use a ultra-silent 92mm fan that I can barely here at full speed - and I only run it at 75% or so, so nothing that will offend my ears but definitely something to keep my PSU alive a little longer.

Once more thanks for all the input, very appreciated. 🙂

Thanks! I used gnuplot, which is able to fit any curve, and successfully computes A and B. Here is how I did:

extrude 50mm (for example) at different speeds and read the real extrusion length;

build a table with 2 cols: first col = speed, second col = error from theorical extrusion / theorical extrusion. You need to revert the sign so the table contains the correction to retreive the correct extrusion;

save this table in a file called 'extrusion.dat';

in gnuplot, do:

A = 1
B = 1
f(x) = A * X + B * x * x
fit f(x) 'extrusion.dat' via A, B <<<<< will print A and B and errors
plot 'extrusion.data'
replot f(x)

Hope this helps.

Minor shameful update: putting back the rails after cleaning them I discovered the motor pulley on the y motor wasn't tightened down properly. It could rock around the flat spot on the shaft. That probably explains the shifting.

Edit: Calibrated 6 factors using 16 points, deviation before 0.027 after 0.024