#prusamk4s — Public Fediverse posts

Odkąd w pracy mam #drukarka3d bardzo wciągnąłem się w projektowanie różnych pierdół w #fusion360. Często próbuję odtworzyć samemu przedmioty z popularnych serwisów oferujących produkty do druku. Z ostatniego dzieła jestem bardzo dumny. To składane szachy. Figurki co prawda znalazłem gotowe – bo chodziło o dość konkretne (tj. w motywie dinozaurów). Jednak plansza i mechanizm są zrobione od podstaw. Plansza drukowana w całości z mechanizmem składania, czarno-białe obszary drukowane osobno, tak samo jak wieczka. Myślę, że prezent będzie udany 😃 #druk3D #prusaMK4S

With the new 6.4.0 firmware the hotend now heats and cools prior to nozzle cleaning. I gather this is supposed to make nozzle cleaning more reliable, but it's actually just producing a turd of filament around the nozzle that eventually comes off during the print.

No wonder my prints have gotten worse recently. At least downgrading the firmware was painless.

#Prusa #PrusaMK4S #3DPrinting

Meh, new auto-retract feature makes the printer throw a stuck filament error every new print. Plus it ejects a little stick of plastic.

I really don't change filaments that often so this is not worth dealing with.

#Prusa #PrusaMK4S #3DPrinting

I've been 3D printing non stop for a few days, I had so many filament leftover spools. Now it's time to paint this thing.

#3DPrinting #prusamk4s

Swapped filament to something else with a plastic spool and holy crap it moves so much more smoothly.

Now I’m wondering how many of my weird problems are simply the result of cardboard spools being too light or creating too much friction. #Prusa #PrusaMk4S #3DPrinting

It will be hilarious if this was the problem, because the A1 tool heads also have a problem where the screws loosen on the mount for the nozzle and you get bad bed probing as a result.

At least Bambu acknowledges this in their wiki though. #Prusa #PrusaMk4S #3DPrinting

All of the screws were somewhat loose. The top ones tightened, but the bottom ones feel like they’re just threaded into plastic and are just spinning.

Started a print and so far so good. #Prusa #PrusaMk4S #3DPrinting

Internet says... tighten the screws on the back of the toolhead, even if they're already tight.

#Prusa says you can slightly loosen the fan screws because those are known to interfere with the load cell. But that requires taking the part fan off so I'll leave that as the second step.

#PrusaMk4S #3DPrinting

At this point I have to unload and load filament every time or nozzle cleaning fails. This is not what I expected when I paid more than double.

Not sure if this is a PLA problem, a switching from PETG to PLA problem, or just a new problem. Printer homes fine without any filament loaded and works fine as long as it gets past the nozzle cleaning stage.

Yes the little silicone brush that many other printers have is a consumable but maybe that would have been a better idea. #Prusa #PrusaMk4S #3DPrinting

Bambu shill mode activate!

Neither one of my A1 series printers ever had this type of problem. I never have to babysit the filament spool to make sure the print starts properly. #Prusa #PrusaMk4S #3DPrinting

Now getting lots of errors. Nozzle cleaning error! Printer collision error! Z-homing error!

Unloading the filament allowed the printer to home fine. So again, too much resistance on the filament spool seems to be an issue.

Nozzle cleaning has failed repeatedly on the smooth sheet. It’s like it’s too squishy and the printer doesn’t know what to do with that. Working fine on the satin sheet. #Prusa #PrusaMk4S #3DPrinting

Bleh, I think it's too smart for its own good.

I had to put bearings on the spool holder because otherwise the printer would try to nozzle clean in mid-air, because there was too much resistance.

Now it's printing worstagons (hexagons) and about an hour ago triggered an improper filament feeding error. I'm guessing it was really the filament spool jerking around, which it didn't know what to do with.

#Prusa #PrusaMk4S #3DPrinting

TIL there is a MJF version of the Nextruder main plate that you can just buy. It’s used in the MMU3 setup but I definitely would have bought one if I knew about it.

https://www.prusa3d.com/product/main-plate-set-mmu3/
#Prusa #PrusaMk4S #3DPrinting

I think my theory is correct. For the purposes of nozzle cleaning, the printer just looks at when it hits resistance, according to the z-axis motors. Logical, since if there’s filament on the nozzle the load cell won’t work correctly anyway.

The problem arises when your filament spool has too much resistance for whatever reason. If you’re using the stock spool holder it shouldn’t be a problem. I fixed my issue by switching to real bearings on the roller; YMMV. #Prusa #PrusaMk4S #3DPrinting

Boy, you don't realize how awful the Super PINDA is until you don't have to use it.

It worked great… until it didn’t and you were left with a fresh gouge in your build plate.

Of course I get that it was state of the art at one time, but it is the worst. #Prusa #PrusaMk4S #3DPrinting

lol, happened again.

I don’t think there’s anything actually wrong with the load cell, the printer just doesn’t bother to check where the bed is before beginning nozzle cleaning.

One of the forum threads suggests that it’s too much tension on the filament, so maybe it is checking, but getting an incorrect result.

When it gets to the actual “bed leveling” stage, it works fine. #Prusa #PrusaMk4S #3DPrinting

First print: failed. It tried to clean the nozzle in mid-air.

Glad to see #Prusa firmware still has weird, unaccounted-for edge cases. On my Mini+, if you ran the leveling wizard multiple times in a row, it would forget where the bed was and make bad noises if you didn't tell it to home itself.

Second print went well. Turns out the Prusament PETG profile works for Polymaker PETG. #PrusaMk4S #3DPrinting

All self-tests passed!

I was very weirded out about being asked to touch the nozzle (to test the load cell). Pro tip: you have to touch the tip, you can't just touch anywhere. #Prusa #PrusaMk4S #3DPrinting

Oh, yeah - see that clear extruder gearbox cover? I paid $20 for that. Except it turns out you need a spacer, which is not clear.

Save your money and just use the one #Prusa provides. #PrusaMk4S #3DPrinting

So vertically, there’s a lot more room than I expected. Horizontallly? It fits, just.

This is the DELACK enclosure, which I quite like. #Prusa #PrusaMk4S #3DPrinting

I feel like the NFC thing makes the electronics box needlessly fiddly. How many times are you going to set up WiFi? #Prusa #PrusaMk4S #3DPrinting

How many driver sets does it take to build a 3D printer? All of them, plus a couple you don’t own. #Prusa #PrusaMk4S #3DPrinting

It gets worse! You need to attach the second y-axis tension block with the belt under tension, so again the screw wants to go in at an angle.

Then you must install a screw through both blocks into a nylon lock nut that wants to push itself out of its hole.

This time the #Prusa belt tuner app seems to work, or at least is telling me what I want to see. Belt feels ok. #PrusaMk4S #3DPrinting

This bed carriage linear bearing clip situation is perfectly designed… if you want someone to cross-thread the drilled holes. The screws really don’t want to go in straight. #Prusa #PrusaMk4S #3DPrinting

As for the nut problem... use a vise. It worked okay enough. Fortunately the part is flat enough so I didn't crush anything. #Prusa #PrusaMk4S #3DPrinting

Now with a #Voron, you're probably missing 20-40% of the instructions you need (or they're out of order, or just different), but the most annoying thing was getting all the belts on the toolhead carriage, which in comparison wasn't even that bad. #Prusa #PrusaMk4S #3DPrinting

In conclusion, nature abhors cable management of any kind, there is nothing you can do to make it easy, so you might as well just make peace with that.

There are too many points in the assembly process where you are basically told to hold 5 parts together and install a screw with your third hand while making sure everything is aligned correctly and nothing is pinched. #Prusa #PrusaMk4S #3DPrinting