Questions tagged [fdm]

Questions about Fused Deposition Modeling (FDM) as an additive manufacturing technology.

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Trouble with polycarbonate print on Ender 3 Pro - What could be the cause?

I performed a polycarbonate modification on my Ender 3 Pro (heated chamber, external electronics, all-metal hotend, new thermistor, PID-tuning, dry-box, actively cooled motors through Peltier cooling, ...
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1 vote
1 answer
45 views

Do flyback diode filters in stepper circuits improve print quality?

Do the add-on noise reduction boards (variously called Schottky diodes, flyback diodes, noise filters) installed ahead of the stepper motors really improve print quality on FDM printers? I installed ...
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3 votes
2 answers
284 views

Filament based printing what operator behaviors contribute to an increased need to relevel a bed?

When using a filament based printer, what operator behaviors increase the frequency at which a bed must be relevelled between prints?
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What parts are compatible with the Anycubic Mega Zero? (FNG here)

I bought a 3D printer 2nd hand from someone a year and a half ago and finally set it up last week (I know I'm terrible). It's an Anycubic Mega Zero. I'm pretty sure it's the first version not the 2.0 ...
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1 answer
189 views

Ultra thin skin of cured resin found floating in vat, possible sources?

I've been repeatedly finding small fragments of extremely thin cured resin floating in the vat of my elegoo saturn resin printer. They're maybe a couple of CM across and so thin that I can't measure ...
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1 answer
402 views

G29 UBL G-code - every request levels bed? [duplicate]

Every time I issue a G29 command the printer runs through all its multi-point/probing bed leveling routine. Is this normal? or can I issue one ...
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21 views

Is there a good or rather better way to finish/smooth FDM prints? [duplicate]

I'm curious as to whether there's an easier and/or more effective way to smooth/finish my FDM prints. I've read about some online but I'd like a second opinion. I'm mostly using PLA and PLA+.
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2 votes
2 answers
1k views

Creality Ender 3: Layer shifting at high speeds

I am printing Benchies at high speed, I successfully printed one at 300 mm/s. If I set the speed to 400 mm/s, the Y axis begins shifting around. This is usually accompanied by a banging sound. In ...
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2 votes
4 answers
145 views

Any way to have slicer make a stronger lattice work?

I'm trying to 3D print a lattice work or truss, basically some beams forming a rectangle and additional beams forming the diagonals and where those beams cross, they should be fused. So, something ...
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2 votes
1 answer
97 views

Extruder skips steps, when filament is manually pushed through the extruder it works somewhat "flawlessly"

My Ender 3 started to skip steps on the extruder, therefore no more filament comes through the nozzle anymore. When I push the filament myself through the extruder, it works somewhat flawlessly. It's ...
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2 votes
0 answers
42 views

Weird layer cross section resonances

While doing the setup of a new machine I printed a small retraction test which showed that layers at different heights present a varying section. The whole area of the layer is expanding and ...
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1 vote
1 answer
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Can a sustainable material like mycelium be used in place of thermoplastics for fused deposition modeling? [closed]

If it cannot be directly injected in a molten form, is there any way on how to do this? When I was exploring about this, I mostly found thermoplastics. Please note that I am not trying to contrast &...
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3 votes
1 answer
136 views

Strange vertical lines on X-axis direction of parts

This one is turning out to be a real head-scratcher. I'm running a stock Creality CR-10S and there seems to be a single line approx 45° across the print on the X-axis direction. I have attached images ...
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1 vote
2 answers
372 views

How to replace the nozzle in my hotend assembly?

What should I take care of to replace the nozzle of the hotend assembly the right way? What kind of data, precautions, tools, steps, and verification are important for replacing the nozzle? The ...
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1 vote
2 answers
1k views

Bed heating stops when paused by filament runout sensor

My CR-10 S5 has a feature, that stops the print, when the filament runs out. However, when the printer pauses, the bed cools down and the print plops if the bed. Is there a way to tell the printer to ...
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  • 111
1 vote
5 answers
236 views

Will 3D printing work upside down or in zero gravity?

I assume SLA printing only works on Earth and upright. But would fused-filament printer (e.g. Prusa Mk3) work in zero gravity? What about upside down or sideways? If not, could it be modified to work ...
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1 vote
1 answer
108 views

Quantitatively measuring nozzle wear

Are there quantitive means of measuring nozzle wear? What steps do you perform to measure this, if so? I have some digital callipers, but don't have much confidence in measurements taken, as it's ...
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4 votes
2 answers
751 views

Why is pressure advance usually implemented in firmware rather than in slicer

Recently I started looking on pressure advance and how it works and I'm a bit confused about where it is usually implemented. My Idea of 3D printer was that its firmware is fairly dumb and only ...
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1 vote
1 answer
337 views

How is the extrusion rate matched to the movement speed?

A typical line of (depositing) G-code seems to set a maximum speed (F), a new position to move to (X, ...
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  • 51
0 votes
2 answers
2k views

My 3D model is printing with missing parts when sliced in Ultimaker Cura

I have been working hard the last year on the model below. I am new to everything 3D that is modeling and especially 3D printing. I have however successfully concluded quite a good number of 3D prints ...
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  • 103
3 votes
3 answers
537 views

Filament that is resistant to ozone

Does a filament exist that can resist ozone (like certain silicone tubing's can). Most glass bottles come with tin or plastic screw hard tops and I would like to replace the screw caps with something ...
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1 vote
1 answer
211 views

Monoprice select mini underextrusion?

Can someone please review the picture and tell me things to try to fix, the threads are full of little gaps. The layers that are solid, below the threads have a tiny bit of space between them. Is it ...
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3 votes
1 answer
413 views

My first layer becomes solid when sections are supposed to have small separations

I've only been 3D printing for a few weeks and most of my prints seem to come out fine, but when I try to print models which require a small clearance between sections of the model, e.g. various ...
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1 vote
1 answer
1k views

How to unload filament as cleanly as possible using the extruder motor?

I usually unload filament using the extruder motor, with the nozzle around 30 °C below the filament's print temperature. Despite this, often a significant amount of filament is left in the nozzle,...
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5 votes
3 answers
3k views

What is the best infill pattern for shearing strength?

For practicality sake, I need to print a design such that there will be weight hanging parellel to the layer lines. Is there an infill pattern that would be better than others at handling this? I ...
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0 votes
1 answer
106 views

Diamond hotend with single extruder motor

Today I started to google the idea of multimaterial printing. I checked out prusa multimaterial upgrade and while it looks nice, it is expensive and will not probably work with my non-prusa printer. ...
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14 votes
1 answer
4k views

Why does hairspray work as an adhesive for ABS?

Since I have a 3D printer, I worked primarily with printing ABS. I tried multiple methods for adhesion (various soluble glues, ABS juice) but always had the most success with hairspray on clean ...
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7 votes
1 answer
2k views

When should I replace the nozzle on my printer?

I have what I assume to be a brass nozzle, and I only print in PLA. I am starting to have some issues with first layers and stringing. I'm wondering if I should replace the nozzle. What signs should I ...
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1 vote
0 answers
37 views

how air gap and raster width are related to each other in FDM process? [closed]

In FDM process, what is the relationship between air gap and raster width? are they depended on each other or are they going to get influenced by the nozzle diameter?
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0 votes
1 answer
56 views

Please suggest parameters for 0.5 mm diameter nozzle [closed]

I am building an FDM machine on my own. I am not using any commercial software. So I have a lot of questions regarding the right parameters to choose. I am having 0.5 mm diameter nozzle. What are ...
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2 votes
1 answer
571 views

Visible/irregular horizontal lines for complex models

There is this small issue I've been trying to find a solution for quite some time now, and nothing I've tried seems to work. My machine is an FDM printer, i3 style, but I have customized so much of it ...
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4 votes
3 answers
953 views

Needle Hotend for nonplanar printing

To minimize retractions and travel when printing several objects, some slicers produce gcode for sequential deposition when each object is built in a traditional manner bottom up layer by layer before ...
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15 votes
4 answers
8k views

Do 3D printers really reach 50 micron (0.05 mm) accuracy?

I've always been wondering about the actual accuracy of 3D printing devices. When looking for the perfect machine to buy, I looked at the speed, price, filaments supported etc, but also accuracy. I ...
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0 votes
1 answer
263 views

Are SLA prints also susceptible to say microbes like FFF prints are with the microscopic flaws?

Say if one were to use foodsafe and or medical grade materials, would (m)SLA print be any less hazardous than one created with FFF printer, being eventually suscectible to bacteria buildup?
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5 votes
2 answers
172 views

Which software do I need to start print something?

I'm still new to 3D printing and I want to print something. I expect that I'll mess it up since I find nothing to adjust it but it is now laying around for 4 months and I'm sick of it. So my question ...
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2 votes
0 answers
86 views

Extruder calibrated, but prints still oversized by .1 mm or so

I've got a pretty straightforward problem. In general my printer is very accurate for the XYZ movements. What I'm running into is no matter what size my print is, the XY dimensions will be thicker by ...
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  • 193
4 votes
5 answers
2k views

Can a single line of Gcode have variable extrusion rate?

Fairly long winded, but hopefully makes sense; I understand that G-code is executed line-by-line, and in the main printing phase each instruction is effectively go to location XY (assuming staying ...
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  • 51
4 votes
3 answers
967 views

How to fix evenly spaced vertical print pattern

These lines exist on all prints, PLA, ABS. They're 0.8 mm apart [20T 2GT pulley, 1.8°/step motor = 1 line/4 full-steps] Start to disappear above 75 mm/s but will still appear on slower axis when ...
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3 votes
2 answers
360 views

Small structures are deformed after switching to Duet Wifi

I just switched to the Duet Wifi board (used MKS Gen L 1.0 before) and now small structures look terrible. From my observations the hot end moves correctly, but almost no filament gets extruded. On ...
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3 votes
2 answers
82 views

Important build plate characteristics/qualities

I managed to tear my build plate trying to get some very stubborn plastic off it. I'll need to buy a new one, what characteristics are important for me to ensure it's compatable with my printer? I ...
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1 vote
1 answer
383 views

Trying to control temperature of hotend using PWM signal and MOSFET

I have a 40 W, 12 V resistance heater in the hotend. It also has a 100 kΩ thermistor built in. I am using an Arduino to read the temperature on the LCD. This is working fine. I want to use this ...
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9 votes
1 answer
404 views

How to avoid stringing?

How can I avoid the irregularities and stringing in the print. Printer Used: Fortus 450mc Model: PC Model tip: T10 Support tip: T12SR Support: SR-100 Slice Height: 0.0050 in I have printed two ...
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  • 461
4 votes
2 answers
3k views

First layer of print comes out poorly even when placed on a raft (which prints fine)

I'm printing PLA with the Creality Ender 2 and my print comes out totally fine with the exception of the first layer. Here's the weird part though, if I place a raft or a brim below/around the print -...
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6 votes
3 answers
907 views

What prints can I do to test/calibrate my printer for precision?

I specifically want to test calibration tolerances precision accuracy I'm having trouble with Print in Place models and I'm trying to find out if there's something I can do to improve my print ...
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  • 1,279
6 votes
2 answers
291 views

Line width changes depending on the direction the print head moves

I just re-ran all basic calibration steps from the Original Prusa i3 MK2 Manual. Now, when doing the first layer calibration, lines that are running in positive X direction are ok, while those ...
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3 votes
1 answer
214 views

Linking the 3D printing path coordinates to CAD for modelling

I was reading this research paper titled Sub-modeling Finite Element Analysis of 3D Printed Structures. In this, firstly, the author is trying to create a sketch for Engineering analysis using the 3D ...
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4 votes
1 answer
922 views

Any family of plastics / filaments that bend and keep their shape?

Not asking for a product recommendation, unless there's only one product out there like this... I have a need for a flexible filament that retains its deformation, kind of like silly putty. Are there ...
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  • 1,580
3 votes
1 answer
257 views

Print quality problem with M3D FDM printer

My model looks like this, does anyone know what's going wrong? I'm thinking that if the small object looks like that, it's probably because of the slicer? And how about the bottom part of the cube... ...
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  • 33
7 votes
2 answers
3k views

Mains powered heatbed safety

I'm building a 40x40x40cm corexy and I am quite impatient so I want the heated to reach the target temperature as fast as possible, so I ordered a Keenovo silicone heater It is a 220VAC 1200Watt bed, ...
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1 vote
1 answer
241 views

Problem With large prints on Lulzbot Taz6

I have got a Lulzbot TAZ6 3 days ago. Last night I started a print which is 21 hours long and when I returned check on it this afternoon it was a complete mess. These are the objects that I wanted to ...
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