Others (Archive) - Prusa3D Forum

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3Delight — Wed, 05 Aug 2020 19:37:05 +0000

This section is intended as a historical archive of posts from the old forum and NOT for posting in. It is now locked and for reference use only.

STL file for Z axis screw ?

merlin10 — Tue, 11 Sep 2018 20:47:19 +0000

Hallo to all !
Just one short question. Where to download STL file for this Z axis (black part) ?

Tnx for anwsers..

Print head rumbling at left side at beginning and end of print

Knopfloch — Mon, 30 Jul 2018 10:47:20 +0000

I've just successfully upgraded my MKs2 with the multimaterial kit. So far I only printed one material through Extruder 1. The prints are coming out all nice and are placed correctly on the the printing bed. However at the beginning and end of each print the print head tries to move outside the printing area and rumbles against the left edge of the rails for a few seconds. What could be wrong here? Thanks

MMU 2.0 video from MRRF

K7ZPJ — Tue, 03 Apr 2018 03:00:34 +0000

Video coverage of MRRF by Thomas Sanladerer with MMU 2.0 (2:42)
https://youtu.be/J54OfY1__fU

MMU compatibility with MK2S and MK2.5 upgrades

All Meshed Up — Sun, 25 Feb 2018 01:14:48 +0000

I'm thinking of upgrading my MK2 MMU to an MK2S and then MK2.5. What I can't figure out is if the MMU upgrade is compatible with the other two, specifically the print-head assembly. I know I would gain the benefit of all the body upgrades but what about the print-head?

MK2SMM plans?

christopher.d3 — Sat, 24 Feb 2018 22:16:00 +0000

Does anyone know where I can find the physical design sheets, blue prints, whatever for the MK2SMM? I’m trying to figure out the precise filament path including the lengths of the various segments. Thanks.

Having problems with MMU - Please Help

Chettar — Sat, 24 Feb 2018 10:53:19 +0000

Hi everybody,

I have an MK2S with the MMU and unfortunately I'm having the following issues:

I am constantly getting blockages in the PTFE tube under the multiplexer. When the printer switches the filament during the print, the filament has a "blob" that is too thick to go back up the PTFE tube.

Another issue is that often the filament just doesn't get extruded. It's loaded fine but nothing comes out during the print. If I am using two extruders, the one will come out fine but as soon as it switches to the other one, nothing comes out.

These problems are using multiple brands of PLA.

How can I fix this? :(

Thanks in advance.

yet another topic for PVA issues

daniel.d5 — Tue, 20 Feb 2018 11:39:06 +0000

Hi there,

FW: 3.1.0
Slic3r: 1.38.5 , 1.38.6 and lesser versions
Material: RS Components PVA, PrimaSelect PVA, AprintaPro PVA-M

The issue is simple really, the PVA is not sticking, tried:

- default profiles
- reduce the printing speed to a bare minimum
- reduce/increase the temperature
- increasing the extrusion multiplier
- other materials
- different FW, Slic3r versions

Nothing helped.

Color printing is usually working all right, the issue is with the PVA. 80% of the prints fails.
The material is stored in an IKEA plastics box with lots of silica gel inside.
Since I bought the MM upgrade only for a water soluble support and it's not working, I'm desperate. Any tips?

Kind Regards,
Daniel

(S3D) Weird tool change despite printing in single color...

jean-marc.t — Mon, 19 Feb 2018 10:25:05 +0000

Hello all,

I rebuilt my MK2S MMUed and did some testings. I fixed most of my issues (I think) and can now print in single color with the same quality and speed than without MMU, which tends to be a surprise since everybody is stating that MMU prints in a lesser quality, still can't figure why it should once calibrated (maybe because I calibrated it for a single filament so far ?).

Now, I'm experiencing something really odd : from times to times, when print starts, the wipe line is printed with the correct filament (E1 for example) but when the actual print begins, it changes for another tool (E2 each time...) without any tool change operation (cool...). Of course, you know the result, it jamms (for obvious reasons).

Is someone else experiencing this ?

PS : I am using S3D, it doesn't seem to be profile related since I experienced this issue with at least 2 different ones (one with a single extruder configuration, the other with 4 extruders one) and I can see the "T1" backtrace in S3D so the printer really thinks it must change tool. I exported gcode and check but this command doesn't exist in it. I am using hyperfine firmware for MMU, maybe this is the problem but I doubt it.

Comm error?

mike.c10 — Sat, 17 Feb 2018 22:05:05 +0000

Hey all.

I'm trying to print a fairly complex and large model ("Faceless": http://www.3dprintmakers.com/collection/fantasygraph/item/faceless-v2) and twice now, at different points about 30 minutes into the print, the printhead stops. Checking the comm log I see this:

Send: N36756 G1 X153.629 Y108.187 E0.01659*101
Recv: ok
Send: N36757 G1 X153.691 Y108.247 E0.00231*99
Recv: ok
Send: N36758 G1 X153.872 Y108.362 E0.00577*108
Recv: ok
Send: N36759 G1 X153.836 Y108.590 E0.00620*103
Recv: ok
Send: N36760 G1 X154.268 Y108.158 E0.01641*109
Recv: Error:checksum mismatch, Last Line: 36758
Recv: Resend: 36759
Recv: Error:Line Number is not Last Line Number+1, Last Line: 36758
Recv: Resend: 36759
Communication timeout during an active resend, resending same line again to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.
Send: N36758 G1 X153.872 Y108.362 E0.00577*108
Recv: Error:Line Number is not Last Line Number+1, Last Line: 36758
Recv: Resend: 36759
Communication timeout during an active resend, resending same line again to trigger response from printer. Configure long running commands or increase communication timeout if that happens regularly on specific commands or long moves.

The printer never recovers and I lose all the material that has printed to that point.
Is this a problem with the model, with the print server (Octopi) or the printer?

#mikec