Questions tagged [fdm]

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

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0answers
21 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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1answer
39 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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0answers
30 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 ...
4
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3answers
312 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 ...
14
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4answers
3k 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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1answer
55 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?
4
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2answers
132 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 ...
2
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0answers
50 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 ...
4
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5answers
385 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 ...
4
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2answers
85 views

How to fix evenly spaced vertical print pattern

These lines exist on all prints, PLA, ABS. They're 0.800mm apart [20T 2GT pulley, 1.8deg/step motor = 1 line/4 full-steps] Start to disappear above 75mm/s but will still appear on slower axis when ...
3
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2answers
164 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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0answers
36 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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1answer
71 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 ...
9
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1answer
162 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 ...
4
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2answers
295 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 -...
6
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3answers
223 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 ...
6
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2answers
108 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 ...
3
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1answer
79 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 ...
4
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1answer
182 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 ...
3
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1answer
176 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... ...
7
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2answers
779 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, ...
1
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1answer
157 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 ...
6
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1answer
5k views

How can I prevent my nozzle catching on my print?

I have created a budget 3d printer using parts of old computers, specifically I used the CD drive mechanisms for the x,y and z axis. This printer is similar to the curiosity E-Waste printer, as seen ...
1
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1answer
86 views

How is FDM Better than CBAM?

So there is a company called impossible objects that use CBAM technology witch the description can be found here http://impossible-objects.com/technology/ I am pretty sure that they are the only ones ...
7
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1answer
4k views

missing small sections of layers after a retraction

So I am missing small sections of a layer when it prints, after a retraction for a layer change or a move, the extruder stops moving (no it isn't clicking or anything else. Just not moving). Which is ...
4
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2answers
880 views

How to make an object hold water

I made a tea bowl, but it leaked when making it in PLA... What are the key points to keep in mind when designing and printing an object that is intended to hold water using an FDM printer?
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4answers
1k views

Troubleshooting printing layer squashing?

I am having a strange intermittent printing error specific to one particular object I'm trying to print. My printer is a BCN3D Sigma R17. I am printing a thin wall (0.6mm) cup object. I'm using: ...
3
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1answer
383 views

Help with Repetier firmware (probably locked and licensed)

I'm in the process of tweaking the firmware (Repetier 0.92.6) because of some problems mentioned here: Delta printer printing incorrect dimensions in X and Y directions. Z dimensions are correct But ...
7
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2answers
258 views

Weight Reducing Design Change for Extruder Driver

I'm considering removing the driver motor from the extruder assembly, and placing it on a stationary mount point instead, and then using a flex-shaft type connector from the motor to the extruder ...
3
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2answers
419 views

Post processing FDM for strength

I'm looking for a post processing method for increasing the functional strength of a 3d printed part originally made by FDM. I've tried printing my part with solid infill but the layer separation is ...
2
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2answers
534 views

Is it possible to print an object that has a “roof” without anything under it?

I recently bought a 3d printer and right now i am printing a normal cube just to try it out. However I was wondering, when it has the last part left of the printing where it needs to create the roof, ...
4
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2answers
3k views

What is the best color of PETg to use for outdoor durability?

I am doing a quad-copter now. I am not sure what color is the best to use for outdoor durability, especially in sunlight. They say PETg is the most durable material amongst cheap ones. But what ...
5
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2answers
521 views

White PLA prints frequently have rough sidewalls near top of the print

This has happened a few times whenever I print with the white PLA (Hatchbox 1.75 mm). It seems that the print job produces smooth sidewalls for most of the part but at a certain point and above, the ...
3
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4answers
627 views

FDM: Clear=transparent part

I intend and would like to print a transparent hemisphere. I have a Taulman T-Glase clear 1.75 mm filament and I have XTC-3D. You can read this interesting page, Hacking t-glase to look more like ...
2
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2answers
10k views

3D print Configuration Cura - Anet A8

I'm new with my 3D printer, I just print two different pawn pieces from thingverse. I just used Cura to convert the files to be readable for the printer. Is my problem with the pieces has to do with ...
1
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1answer
225 views

Reprap prusa i3 Y and Z axis swapped when printing GCODE files

I'm having an issue with my new Prusa i3. (This one: https://www.amazon.co.uk/gp/product/B01DLIRDFW/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1) For some reason the Y and Z axis are swapped when ...
11
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4answers
2k views

Printing screws - is the output usable? (M3 or M4)

I just want to ask if anyone has successfully printed a screw (M3 or M4). Is the printed output usable as a screw? What printer is capable of printing screws? I am using an M3D printer - is there a ...
6
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2answers
300 views

What causes the print heat to 'catch' on the part?

What would cause this effect, and how can it be avoided? This is a PLA print, and it should look like this. I tried 215 and 225°C and both had the same effect. An earlier similar print at 220°C was ...
6
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2answers
107 views

What are the downsides and aftereffects of using a smaller nozzle?

A lot of consumer desktop F.D.M. printers comes with a 0.4mm nozzle. I'm looking to print fine details objects and I was considering trying to use a smaller size nozzle. But before I do so I would ...
7
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3answers
684 views

How to 3D print an object with variable printing speed?

I have a object to print for which I want the base to be printed very rapidly because it's just a cube but as the print reached around 70% a complex circular structure needs to be printed at a slower ...
17
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8answers
22k views

What are the advantages and disadvantages of an all-metal hot end compared to one with a PTFE heat break?

Related to an issue I had in this question, where the PTFE tube feeding my filament to the metal tip of the extruder clogged and became discolored: what are the advantages and disadvantages of ...
11
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3answers
712 views

Can toothbrush bristles be printed?

Is it possible to print toothbrush bristles using a common FDM 3D printer? I am particularly interested in the width of bristles, closeness together of each bristle, and the flexibility of each ...
7
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4answers
4k views

Raft hard to remove?

I've been having a hard time lately getting the raft off of my ABS prints. Is that a symptom of either a nozzle or bed that are too hot? Or is there some other factor I should be looking in to? I ...
5
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3answers
1k views

Glue sticks for print bed

I would like to get a green tombow PITS adhesive stick. On Rakuten, it costs \$1 (USD). On my 3d printer's (XYZ) retailer's site, it costs \$20 (USD). Due to the costs and the fact that Rakuten does ...
10
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4answers
4k views

Layer delamination

I've printed mostly ABS in the past and encountered delamination between layers many times. I've ensured the following conditions regularly: Build plate is level Base of print isn't warped (using ABS ...
6
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2answers
498 views

What are the appropriate ranges of gear ratios for 1.75 mm and 3 mm filament extruders?

Most 3 mm (mostly are actually 2.85 mm) filament extruders have some kind of gear reduction. Many 1.75 mm extruders are direct-drive / ungeared but some do use gears. What kind of ...
5
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3answers
500 views

Is 3D printing feasible for this design?

In a design that I need to prototype, I have a coaxial, rotational joint between 2 cylinders connected to another coaxial rotational joint between 2 cylinders by a hinge. I have attached the ...
3
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1answer
438 views

Settings to change when upgrading from Smart Extruder to Smart Extruder+

I am optimizing a collection of slicing profiles and in the process of upgrading some profiles from the classic Makerbot Smart Extruder to the new Smart Extruder+. What are the parameters that should ...
7
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1answer
1k views

Proper settings for printing rubber and rubber-like materials?

I am struggling finding how to print complex shapes made of rubber, tpu, tpe... Are there any clear guidelines on how to print those materials without deforming and uncontrolled retraction? The ...