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Prusa MK3 under extrusion

by gaellafond

I printed this Tintin jigsaw rocket: https://www.thingiverse.com/thing:2102862

The print went very well, except for the base. I'm experiencing under extrusion. The model have manifold issues (blame Sketchup) but it looks ok in the Slicer. I assume it's something wrong with my printer, or maybe some slicer settings.

The problem occurs where the support pattern changes, but it also occur higher on the part.

I didn't get skipping steps. I thought maybe my extruder was too hot, i was getting some strings, so I lower it from 210°C to 190°C and reprinted the part but the problem is still present.

Any idea what can cause that?

[Edit] I'm printing with PLA (from X3D)

Tintin Moon Rocket Puzzle (small)
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Extruder motor skipping

by einzelmais

Hey there! I saw this topic a couple of times already but tried almost everything and am really desperate by now. So I bought my printer about a month ago (it's my first) and after a lot of calibration and testing everything was fine until at one point it stopped extruding filament properly. Took me a while until I found out the motor was just skipping over the material instead of extruding it. It was easy to handle at first. As long as I noticed early enough, I could just push it in a little and it would keep on printing. But all of the sudden printing is completely impossible and I can't seem to find the problem.

I tried increasing the pressure between gear and filament.
The nozzle is not cogged (at least I think so, I wouldn't have the proper equipment to fix that though).
The gear is in perfect position and clean.
I tried adjusting speed and stepping. No use.
Tried another material. No difference.

For further information:
This is the printer: https://www.amazon.de/gp/product/B07QY6K6ZJ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1
I have only used PLA so far (different brands though).
I am located in Germany (It's set to 220V, didn't dare to change that yet).
The weird thing is when it extrudes some material before printing it works sometimes but when it actually starts printing it fails completely (especially on the right side of the building space).
Also, can't update the firmware due to a bootloader error. Would be capable of solving that but I don't want to buy more equipment unless it's really necessary.

I really hope someone can help me. I have little to no experience and this thing is brand new. Thanks in advance!

Anet_A8 extruder Help prusa_i3
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.25mm nozzle source?

by ghstgry

I wore out my .25mm nozzle printing miniatures and I need some replacements. I've got a .2 and a .3 from a set I got a while back, but I really need 5-10 of the small nozzle. I'm not interested in getting a 10-pack assorted.

Anyone know where I can pick up a small batch of .20 - .30 sized nozzles?

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Prusa i3 MK3s Hotend Sock?

by JaphethHampton98

I recently got a Prusa i3 Mk3s kit and it ran fine for about a day and then the thermistor wire messed up. I think the problem is that it was pressed directly against the heater block and that much heat directly on the wire messed it up. Prusa is sending me a new thermistor wire, but I was hoping to put a sock on my hotend to prevent this problem in the future. Would the standard E3D v6 hotend socks fit onto the hotend? I know that Prusa uses a custom version of the E3d v6 hotend but I'm not sure if any of these changes would affect putting a sock onto it.

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SainSmart 2-in-1 3D Board cant upload firmware please help

by dmkmedia

has anyone got a SainSmart 20-029-129 2-in-1 3D Printer Controller Board https://www.amazon.co.uk/gp/product/B00PVF5SWE/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
this is my second one now as I sent the first one back.

I just can not upload my firmware to it... I can connect to it via USB and all I get is a list of numbers saying
T0 980 T1 976 T2 1024

i take it this is just the raw data from the temp sensors but i cant upload firmware with Arduino all i get is a long pause after compiling as if it's uploading but after about 5 mins it just says there has been an error uploading the firmware

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