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prusa3d / Prusa-Firmware

Firmware for Original Prusa i3 3D printer by PrusaResearch
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Feature request: Multi steel sheet option #1425

Closed danielegger1 closed 5 years ago

danielegger1 commented 5 years ago

I have five different steel sheet (prusa pei, prusa txt, buildtak pei, normal buildtak, thekking txt) and all of those needs different live z values. I have a mmu unit and this provided me the idea of the sheet selection option.

My idea is to have a possibility to add several live z values in the live z settings menu from sheet 1 to sheet 5. So for a user with just one sheet only sheet 1 will have a value, but for those users who have several sheets they can change the value for the second, third etc sheet to the necessary value and if there are more sheets with a value unequal to 0 it will pop up with a message before the print starts with the current live z value - this can be similar to the filament selection message before a print start. Currently I forgot quite often to change the live z before the print start and I find it iut when the first layer is already started, which leeds to aborting the print and start all over again.

To have the offset in slic3r does not make much sense to me as I prepare the next days already much earlier and I swap the sheets depending on the surcafe which I wanna get.

I think this can be a quite helpful feature as also the two original sheet needs a offset of about 200-300 mikrons.

workinghard commented 5 years ago

Actually Live-Z also depends on the material you're printing, not only the sheet. Even better solution will be to have RFID chips in the sheet and the filament roll. Then you can store all the preferred values for this combination. But this is more a wish for MK4 :-)

danielegger1 commented 5 years ago

Haha Yes and no

If the temp calibration for the pinda is correct you only need different values for different sheets (and only fine tuning for filaments but this can be also done with first layer height in slic3r) and to wait for that simple addition for the MK4 is not a suitable solution I think as also for Prusa guys it is probably annoying if you switch between sheets. So maybe you can add that in a future release.

But thanks for the response by the way.

Nikolai notifications@github.com schrieb am Mi. 26. Dez. 2018 um 19:45:

Actually Live-Z also depends on the material you're printing, not only the sheet. Even better solution will be to have RFID chips in the sheet and the filament roll. Then you can store all the preferred values for this combination. But this is more a wish for MK4 :-)

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workinghard commented 5 years ago

That's true, you can fine-tune in Slic3r. But then you could also do it already now for different sheets in Slic3r. I don't really see a difference in the process. Selecting manually on the printer the live-z value X from the menu or setting it manually via Live-Z adjust is kind of same to me.

danielegger1 commented 5 years ago

I am not sure if you get what I mean.

The idea is to have for example 5 different values in the settings for 5 different sheets. And in most cases it does not matter which sheet but in some cases it matter. So just before the print start I will get the question “which sheet setting you want” and maybe also add a last option “remeasure bed” (with this option I could swap the sheet if I forgot to and will come back to the question). For some prints the powder coated is not the best option but maybe on the previous print this was the correct surface what I want to have. I am swapping several times a day the sheets and so I forgot to change the live z also several times and I end up to restarting the print because the life z is wrong and I will release that when it starts the first layer (as some are just significantly different) I could do that in Sclic3r yes, but also the old and the new prusa pei has different thickness and if I just swap between those two I end up with changing live z very often and if I have to do that often it is quite annoying. So said I don’t know when slicing which sheet will be taken.

The big advantage of the message is that I have to double check which sheet is on and select it, so I cannot forget it.

Another idea (which will be already helpful enough) is to make a Mxxx code which makes a live z popup window (so I can insert that before the start) and the printer is haltet until I press the knob, so I can modify the value before each print, similar to first layer calibration just on a normal print and the printer does not move in that case.

Nikolai notifications@github.com schrieb am Mi. 26. Dez. 2018 um 20:03:

That's true, you can fine-tune in Slic3r. But then you could also do it already now for different sheets in Slic3r. I don't really see a difference in the process. Selecting manually on the printer the live-z value X from the menu or setting it manually via Live-Z adjust is kind of same to me.

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workinghard commented 5 years ago

Ok. I understand it better now. I think not many people have this requirement and I'm pretty sure supporting 3rd party sheets will not have a high priority in the PR firmware development.

Personally I don't see a benefit here. During slicing I know already which sheet I want to use. I know if I need a powder coated finish for this part or if I'm using a sticky filament which requires special sheet. So the decision is being made during slicing and the Z-value can be also set for this special sheet in the slicer. In your case I would just add M117 "Make sure sheet X is in place" and M0 for pause.

inquisitiveKangaroo commented 5 years ago

Hi Thank you for an interesting feature request. Can you create a pull request? Otherwise I'm afraid this will not be the highest priority for several weeks due to the limited numbers of developers. Wish you happy new year! Kangaroo

danielegger1 commented 5 years ago

How can I change that issue to a pull request?

GurliGebis commented 5 years ago

You cannot change it. You would have to write to code to implement the change, push it to a forked git repository, and then create a pull request from there.

cnlson commented 5 years ago

@workinghard how exactly in the code can you do this? I have 4 sheets, original pei sheet, theking powdercoat v2, theking powdercoat v3 (the best) and prusa powdercoat and for a project i have been switching back and forth between tkv3 and prusa pc and i would love it if all i had to do was have two different gcodes.

workinghard commented 5 years ago

@cnlson: In Slic3r it's under the "Printer Settings" tab -> Custom G-code -> Start G-code. Place this two commands in the first line:

M117 "Make sure sheet tkv3 is in place"
M0

Under "General" update the Z offset for this sheet. Save this profile as your tkv3 profile. Do the same for the Prusa PC sheet.

It's an untested idea. Please let us know if it works this way with the current firmware.

cnlson commented 5 years ago

@workinghard i'm not on the current firmware. I'm on 3.3.1 which is the last fw that i am comfortable running with all the issues. The strange feed issue with loading filaments and the temp drops in 3.5 and 3.5.1 until the issues are worked out, i'll stay on the sidelines with a working printer.

so if this is not in 3.3.1 it is academic for me

workinghard commented 5 years ago

@cnlson Then try it on 3.3.1 and let us know BTW: Maybe it would make sense to contribute to the issues holding you up to switch to the most recent firmware. Otherwise it will not help you if this new feature will make it's way in the most recent release.

cnlson commented 5 years ago

I checked after reverting from 3.5 and the issues were logged:

https://github.com/prusa3d/Prusa-Firmware/issues/1392 https://github.com/prusa3d/Prusa-Firmware/issues/1389

i added my comments on both.

on general, i assume you are talking about z-offset? i might play with that a little but my concern is that the difference isn't as large as it seems to expect -0.3 it's -0.035 and i do not want to screw up either my prusa or my other textured sheet and i am not exactly sure which way this works. in other words is - - or is - + in this scenario. so I'll play with it tomorrow. I haven't really used my original pei sheet plate since I got my King v2 sheet so i'll figure live z on that first and work backwards and make a profile for each sheet.

danielegger1 commented 5 years ago

I found another issue with a similar request.

1336

But I got another idea in mind, I would like to have a G-Code command to set the live Z height, depending on which sheet is on the printer, so I could build a "logic" in Octoprint with a couple of sensors so Octoprint will send the correct sheet to the printer without manual intervention (MK4 style :D)

stahlfabrik commented 5 years ago

+1 for live z adjust via gcode!

michalxfanta commented 5 years ago

In firmware 3.8.0 we implemented Sheet profiles feature.