Questions tagged [prusa-i3]

The Prusa i3 is the third iteration of Josef Průša's RepRap 3D printer design. This is an open source design, the tag should be used regardless of individual manufacturer (clarify in the question if it is useful to be specific).

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Translating values from marlin firmware to reprap firmware for Prusa i3 MK3S

I am also a beginner trying to understand the firmware values and getting to know my printer before I actually get the duet so please bear with me, do let me know when I have gotten the values or ...
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12 views

Geeetech i3 Pro C with 3DTouch major issues

I'm in dire need of trying to fix my Geeetech i3 Pro so many attempts to fix it. After connecting all these pins correctly I uploaded the Marlin firmware with the correct configs. I will attach the ...
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2answers
67 views

How to solve burnt blobs on Prusa MK3S (PETG)?

As stated above, I am trying to solve a problem I've had for a long time. Unfortunately, this has recently intensified to the point where it causes layer splitting/detaching from each other. I have ...
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1answer
32 views

Can't print the top part of a circle

I'm trying to print the painter's tripod from this tutorial: I can't get it to finish the print. It always fails towards the top when it's closing the circles. I've tried brims and even glue for ...
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1answer
14 views

CTC i3 Y-axis thin / no filament deposition

I have this CTC i3 printer; when I print square test prints, as it moves along the Y-axis back to zero (front). It extrudes lines but very thin or none at all. But opposite direction along the Y axis ...
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1answer
51 views

How to check if filament sensor is ok?

The filament sensor of my i3 MK3 stopped working. In the support menu, it just says IR: N/A. This is the same output as if I disconnect the filament sensor. My PCB ...
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0answers
20 views

ETA for print job showing negative in Repetier host

I'm using Repetier host 1.0.6, and ever since adding default retraction settings, the "ETA" showing during a print job is negative: It stays this way throughout the print job, which is no fun, since ...
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1answer
24 views

Issues with print Prusa i3 infill breaking and causing clogs

I'm having some issues with my Prusa i3 prints. I'm trying to print the default beer opener print that came with the Prusa's memory card but the infill will break causing clogging and now allowing the ...
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1answer
67 views

Prusa MK3S weird 'Blobs' on PLA print surface

This is the first time I've run into this problem and it seems very confusing. I wanted to print a simple functional part out of PLA and although the first few layers were fine, the 6th/7th layer ...
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42 views

Prusa MK3S Nylon&ABS print failures

I'm using Prusa i3 MK3S and every time I want to create a durable, impact resistant part, I use ABS/Nylon. The problem is, however, that when I print something small (of less than 1 cm width for ...
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1answer
37 views

Prusa i3 MK2 Heated Bed Thermal Runaway Problems

I'm having an issue with my Prusa i3 MK2 MMU. It starts printing just fine, and everything gets up to operating temp quite quickly. However, after printing the first few layers, it seems as if the ...
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3answers
210 views

PRUSA likes the bed to be cleaned with isopropyl alcohol. What else should I use?

I have the original Prusa i3m3 printer. Prusa recommends cleaning the bed before each print with isopropanol (isopropyl alcohol), with only occasional cleaning with acetone. The textured bed ...
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25 views

Printer places prints off the bed after change in bed Z-probe area settings [duplicate]

I really don't know what I am doing wrong. Since changing my bed level sensor from left of the extruder to back mount, it doesn't work proper anymore and I have some fundamental thing I don´t ...
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1answer
46 views

My Z-axis is limited to 15 mm at height [closed]

I have a Prusa i3 and I have a problem concerning my Z axis. It stops at 15 mm even the object to print is more than this. Can you, please, help me to solve this problem.
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39 views

Help needed implementing Bear Upgrade

I am attempting to build a 3D printer using the Bear Upgrade for guidance. In this moment, I am implementing the X-Axis. The X_end_idler consist in two parts, the idler and the belt tensioner, as you ...
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1answer
129 views

How do you call the Z-axis mechanism in a Cartesian 3D Printer?

How do you call the mechanism that allows linear motion along the Z-axis in a Cartesian 3D Printer? I know what the individual parts are; it is a lead screw, a smooth rod ... but how do you call the ...
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1answer
602 views

Filament spreading apart and stringy on first layer

I keep having this issue on prints where the first layer has stringy lines that don't stick together. I've tried the following things Replaced nozzle and throat Used new filament (to rule out ...
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1answer
92 views

E3D V6 nozzle seized into heater block

The 0.4 mm brass nozzle in my Prusa i3 MK3 is worn out - the extrusion hole is visibly larger than the replacement nozzles I have to fit. So I’m trying to replace the nozzle. Unfortunately the ...
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52 views

Shell detaches from the rest of the part

I'm printing with a Prusa MK3, with the following settings: 3 perimeters 50 % infill infill overlap: 50 % The filament is Polyalchemy emerald green (PLA). Nozzle temperature: 210 °C. ...
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4answers
590 views

Smallest dot/dot indent for Prusa MK3S using PLA

I want to make a project involving many small dots indents and I would like to know how I can calculate the smallest dot hole the Prusa i3 MK3S can extrude around on a layer using PLA. In other words, ...
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1answer
101 views

Clearance between moving parts

I am using a Prusa printer to print parts for prototyping. The project I am currently working on needs parts to be able to slide against each other and they need to be printed together. A bit like ...
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4answers
374 views

First layer looks weird and print fails

Update below Printed 650 of these tokens, no problem. Then all of a sudden I can't get them to stick and the first layer looks wavy and weird. After a few tokens it knocks one loose and the whole ...
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1answer
352 views

Prusa i3 mk3 step skipping and layer shifting

After approx. a year of more or less problem-free printing (40 days print time) with Prusa i3 mk3 kit, we started to suffer the random layer shifting on Y axis. We inspected all the motor connectors ...
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1answer
355 views

Setting up UBL for the first time on Marlin 2.x on a Prusa i3, how often should I level the bed using G29?

I used to use the Marlin 1.x software that would level the bed by probing the 4 corners of my print bed (a long time ago, it's been at least 2 years since I used my printer, wasn't able to set it up ...
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Marlin 2.0 Firmware temperature jumping on LCD when trying to configure UBL

Flashed Marlin 2.0 on my Folgertech 2020 Prusa i3 variant. Calibrating seems to have gone smoothly until I tried to set up UBL. Saved the mesh into EEPROM with the ...
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2answers
838 views

Prusa i3 MK3S keeps clogging during print. Ugly streaks sometimes, and complete clog when printing with lower layer lines

The extruder on my Prusa i3 MK3S keeps clogging while printing. Loading is fine, and each time it clogs, unloading and loading the filament seems to work. The filament extruded just after resolving a ...
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1answer
543 views

Thermal runaway on extruder hotend

I am getting thermal runaway even after PID autotunning many times. I tried 10, 15, 20, 25 and 30 cycles and after reuploading FW onto the printer but I still get the error... I've built a copy of ...
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1answer
384 views

Prusa i3, MK3: Firmware updated to 3.8.0. Display shows white blocks

About the printer: Prusa I3 MK3 [Sintron] Arduino Mega 2560 (just replaced) Replaced LCD / Smart controller FIRMWARE 3.8.0 Steps I have already tried: Replaced faulty Arduino Failed to flash ...
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1answer
88 views

Hotend drops to 175 ºC once extrusion starts (MINTEMP error reported)

Hotend drops from 205 °C to 175 °C, and then the printer errors MINTEMP. How can I fix this? Fan is not starting yet. ...
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1answer
186 views

PET-G under-extrusion after changing the nozzle to a 1.2 mm d. one (Prusa i3 mk3s and PrusaSlicer v2.0)

PET-G is the main filament I use. I can achieve high quality of my prints with my Prusa i3 mk3s printer. Recently however, I've recently changed my nozzle from the default 0.4mm to the 1.2mm. I ...
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2answers
1k views

How can I add an extra fan, controlled by a microcontroller, to my board?

I recently discovered this kit after reading this Instructables, Adding More Extruders to Any 3d Printer: I'm pretty sure I can use this kit with my board since it uses the same drivers as mine. ...
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1answer
41 views

Has anyone rebuilt Prusa3D firmware for the Genuine Pruse i3m3s?

With no answer to my question two days ago about how the Prusa printer behaves with an intermittent open or shorted thermistor, I'd like to ask this question of relative last resort. Prusa seems to ...
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1answer
68 views

How does Prusa3D firmware respond to an open or shorted thermistor during a print?

I have a Prusa3D i3m3s. The problem occurred once before with firmware 3.6.1. Last night I upgraded to firmware 3.7.1 and repeated the problem almost exactly. The symptom is that at what appears to ...
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2answers
3k views

Is there a way to print with ABS without enclosure?

ABS is a very strong material, but it also has some downsides. One of them, which is the necessity of having a printer with enclosure, completely discouraged me from using it, as it would be a waste ...
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2answers
732 views

Prusa i3 MK3S 3D printer PETG printing problems

I am using a new Prusa i3 MK3S 3D printer kit. I print lots of things using PLA and PETG. After a week of great performance I noticed that when printing some objects with PETG filament I often ...
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1answer
221 views

How to connect BLTouch sensor to Alunar M508 using LSEE 3D v1.0 board?

In the process of updating my printer (Alunar M508), I decided to add "Auto Bed Leveling" using a BLTouch sensor. After doing a lot of Googling: I found firmware that will upload and work with ...
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1answer
634 views

Change hotend thermistor input in Marlin

I have a Marlin driven Prusa i3 clone, by accident I cut through both thermistor wires for the hotend while it was powered on. The Arduino reset and the hotend thermistor no longer work. Since there ...
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3answers
290 views

Prusa MK3 heatbed marks

I've got some curious marks on my heatbed. It appears to be from my black Sunlu PLA+ (I can just feel it if I scrape my finger nail over it) but I can't scrape it off with the metal spatula. When I ...
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3answers
133 views

Advice for 3D modeling peg for sprinkler dripper

I'm not really sure where to ask this question as I think it is a design question, but also a printing question. So if there is a better place to post, I'd be happy to harass someone else. I'm (re)...
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68 views

Grayscale laser engraving with Ramp1.4

I have a Reprap Guru Prusa i3 v2 3D printer. To this I added a 5.5 W laser that I purchased online. The board of my 3D printer is an Arduino Mega 2560 board with Ramp 1.4. I have connected my laser ...
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1answer
124 views

PID autotune fails under all conditions so far. Any ideas I haven't tried?

I got some Prusa i3 clones with Melzi boards with Marlin, or nearly so. One of them performed very well (considering that the board would reboot whenever power was applied to the build plate. But I ...
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1answer
512 views

Add a laser module to Reprap Guru Prusa i3

I have a Reprap Guru Prusa i3 v2 3D printer. Here is a link to the 192 MB manual. And here is the link to the resources page for the Reprap Guru. Page 58 of the manual discusses electronics. I ...
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0answers
26 views

Selective reinforcement of some places in my part [duplicate]

I have a part that experiences larger than average forces in some of its protrusions. It would make sense to reinforce walls, and in particular strengthen infill in those areas. But to save material ...
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2answers
352 views

What is causing these strings in the overhangs?

I am consistently getting these strings in the overhangs on models that folks say they are printing without supports. Can anyone tell me what is causing them and what I can do to fix them? I've ...
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4answers
480 views

Power OctoPi from printer

I'm wondering if there is some trick to power my OctoPi with the power supply of my 3D printer. I'm using an Geeetech I3 Pro W. The power supply itself should be able, but the output is as far as I'm ...
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1answer
145 views

Can I repurpose most of the components of this Prusa clone for a Delta?

I have a generic Prusa clone that I'm not using (my primary issue with it is the lack of rigidity in the frame housing as built). Will the motors (ks42sth40-1204a) and controller that come with it be ...
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1answer
70 views

The first layers while printing look strange

I own a Geeetech i3 Pro W and I started printing today. Amazing how it works. I just recognized while printing my first bigger model something very strange: At the beginning some parts are missing ...
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2answers
1k views

PLA print warping on heated bed [duplicate]

I am trying to print the 3 jaw lathe chuck on Thingiverse. This specific piece is the scroll.stl, but it applies on every big piece. The print material is (transparent) PLA, that I print on custom ...
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2answers
360 views

Best way to fix ABS corner curling on enclosed Prusa style printer with PEI heatbed?

I'm trying to set up an enclosed (custom enclosure) Prusa i3 style printer for ABS, but having a fair amount of difficulty preventing the part corners from curling. Detailed specs: Geetech A10 (...
2
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1answer
224 views

Small dent problem

Whenever I print, I tend to have a small dent that appears on several of my prints, that are not in the original design. These are not following the layer orientation. As far as I notice, nothing ...

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