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Questions tagged [fdm]

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

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12
votes
1answer
1k 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 ...
5
votes
1answer
95 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 ...
1
vote
0answers
23 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?
0
votes
1answer
41 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 ...
2
votes
0answers
39 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
votes
3answers
511 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
votes
4answers
4k 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 ...
0
votes
1answer
67 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
votes
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
votes
0answers
52 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
votes
5answers
480 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
votes
2answers
90 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
votes
2answers
172 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 ...
1
vote
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 ...
1
vote
1answer
85 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
votes
1answer
168 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
votes
2answers
343 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
votes
3answers
246 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
votes
2answers
119 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
votes
1answer
80 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
votes
1answer
184 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
votes
1answer
184 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
votes
2answers
886 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
vote
1answer
165 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
votes
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
vote
1answer
89 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
votes
1answer
5k 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
votes
2answers
911 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?
4
votes
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
votes
1answer
388 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
votes
2answers
262 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
votes
2answers
436 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
votes
2answers
563 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
votes
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
votes
2answers
547 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
votes
4answers
643 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
votes
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
vote
1answer
232 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
votes
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
votes
2answers
312 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
votes
2answers
111 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
votes
3answers
712 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
votes
8answers
24k 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
votes
3answers
730 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
votes
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
votes
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
votes
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
votes
2answers
574 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
votes
3answers
503 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 ...