Skip to main content
17 votes
Accepted

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

This is a good question to make a comparison table. All-metal hotends Vs. PTFE liner hotends. All metal: Works well for high (+250ºC) temperatures filaments like nylon or PC. No need to replace the ...
JorgePerez's user avatar
16 votes
Accepted

Why does hairspray work as an adhesive for ABS?

First of all, not all hairsprays work. The chemicals in hairspray that causes the bonding is "VA/Crotonates Copolymer", it is also called "vinyl acetate/crotonic acid copolymer". ...
0scar's user avatar
  • 36.2k
12 votes
Accepted

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

well... it's hard to imagine printing M3 or even M4 I haven't try but I haven't because I'm pretty sure it's not possible (on my printer of course) but some time ago I've tried M8 which is of course ...
darth pixel's user avatar
  • 3,476
12 votes
Accepted

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

There's not a simple answer to this question, or if there is, it's "no". However the situation is a lot more complicated. When printer specs cite accuracy like this, they're usually basing the claim ...
R.. GitHub STOP HELPING ICE's user avatar
10 votes

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

Yeah, Yeah... Old topic I know, but still an ongoing topic for new and old hands alike. "All metal or PTFE lined" along with "Bowden or Direct drive" Those are the questions! This is a very unusual ...
Mark Wood's user avatar
  • 101
9 votes

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

In general, metal extruder without PTFE feeding is useful when printing with materials that require high temperature to melt: 300oC and above. Polycarbonate with recommended printing temperature at ...
Mikhail Z's user avatar
  • 888
9 votes

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

One of the things I was told about was that many printers don't necessarily have that crazy precision of 0.05 mm (50 micron). Another person told me something different - he said most of those ...
Tom van der Zanden's user avatar
8 votes
Accepted

Layer delamination

Cool environmental conditions are the single biggest contributor to ABS delamination. Delamination or edge/corner cracking is caused by warping stresses when the first layer adhesion is stronger than ...
Ryan Carlyle's user avatar
  • 6,616
8 votes

How is PLA different from ABS material?

The problem is that it's almost impossible to answer the PLA/ABS question just by looking at the material characteristics as it is so dependent on the application and even the specific object you're ...
FilamentGuy's user avatar
8 votes

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

Yes. This question and most of the answers are old, and 3D printing has come a long way in the past 4 years or so. Alexandre Strube's bumping with one up-to-date answer inspired me to take another try ...
R.. GitHub STOP HELPING ICE's user avatar
8 votes
Accepted

When should I replace the nozzle on my printer?

Replacing the nozzle depends on many things, the nozzle material (copper/brass, steel, hardened steel, Olsson Ruby Nozzle), the type of filament you print, how frequently you use the 3D printer. To ...
0scar's user avatar
  • 36.2k
8 votes
Accepted

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

In addition the E axis is no longer controlled directly by the GCode, but it's motion is almost independently determined by the firmware. This is the case even without linear advance. G-code does not ...
Tom van der Zanden's user avatar
7 votes
Accepted

Raft hard to remove?

A couple things to consider: Ensure that your build plate is flat and level. An un-parallel HBP could result in the object "welding" to the raft. Turn down your nozzle temperature. It is likely that ...
tbm0115's user avatar
  • 6,324
7 votes

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

A resolution (sometimes called "accuracy" for marketing purposes) of 0.05 mm means that if you produce a bunch of 10 mm dice and a bunch of 10.05 mm dice, then the 10.05 mm ones will be statistically ...
Dmitry Grigoryev's user avatar
6 votes
Accepted

Can toothbrush bristles be printed?

Actually last year a group did use a normal FDM printer to 3d print hair, brushed, etc. See the press release from Carnegie Mellon University https://www.engadget.com/2015/10/29/3d-printing-hair-is-...
StarWind0's user avatar
  • 3,113
6 votes
Accepted

Are there any metals that exhibit a large glass state?

A few things are required for effective extrusion-style 3d printing materials: It must stay where placed by the nozzle long enough to harden (or, alternately for pastes and such, have a shear-...
Ryan Carlyle's user avatar
  • 6,616
6 votes

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

As @fred_dot_u mentions, Simplify3D has the capability to do this, but you can achieve the same effect by slicing the file twice, once at 40 mm/s and once at 50 mm/s, and then manually combining the ...
Tom van der Zanden's user avatar
6 votes
Accepted

Post processing FDM for strength

Recognizing that the posting party feels that FDM constructed parts are of insufficient strength for his purpose and allowing for proper layer bonding, one can understand that the model can be ...
fred_dot_u's user avatar
  • 11.8k
6 votes
Accepted

Which software do I need to start print something?

First; find a model! To print something you require a model (usually this is in STL format, look into websites called Thingiverse and MyMiniFactory for examples). Once you have a model file, you need ...
0scar's user avatar
  • 36.2k
6 votes

Needle Hotend for nonplanar printing

A conventional hot end needs only to be obstruction-free to the desired printing height on two adjacent sides to achieve what you want. The only other requirement is to be able to tell your slicer in ...
Mick's user avatar
  • 3,180
6 votes
Accepted

Creality Ender 3: Layer shifting at high speeds

TL;DR: Don't do that. Detailed answer: You need motion limit parameters that actually make physical sense, and firmware capable of executing a motion plan according to them. Your jerk and acceleration ...
R.. GitHub STOP HELPING ICE's user avatar
5 votes

When to use 1.75 mm vs 3 mm filament?

As I read the history, 3 mm filament was an accident of the supply chain when 3D filament printers were first being developed by hobbyists. There was a product called a "plastic welder" which ...
cmm's user avatar
  • 4,571
5 votes

3D print Configuration Cura - Anet A8

That looks like horrible underextrusion. Either the extruder steps/mm are way off, but more likely is that your nozzle is clogged (because I wouldn't expect the steps/mm to be this far off). It's also ...
Tom van der Zanden's user avatar
5 votes
Accepted

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

If you want to change settings on some area of your part check out modifier meshes in Slic3r. It looks like to0 much heat is delivered when solid infill starts and some melting occurs. See 3D ...
lz42's user avatar
  • 76
5 votes
Accepted

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

Unless you plan to use your copter outside Earth atmosphere or expected lifetime is more than tenths of years, UV degradation should not be a problem for PETG. Some of the net sources indicate the ...
Mikhail Z's user avatar
  • 888
5 votes
Accepted

Weight Reducing Design Change for Extruder Driver

Very cool idea, One motor would definitely be more than capable of producing the required torques even through a flexshaft connector. For any normal sized 3D-printer the torques required, and the ...
Diesel's user avatar
  • 1,905
5 votes

How to make an object hold water

I've found that a double-walled base seems to give better results than trying to make the base very thick. Any imperfections in the print, or cracking caused by removing the print can lead to leaks - ...
Sean Houlihane's user avatar
5 votes
Accepted

Needle Hotend for nonplanar printing

The site is not well-suited to crowd-sourced invention, but the drawbacks to your suggestion are (I think) on topic. The hotend has two main tasks. Accurate control of extrusion, and maintaining the ...
Sean Houlihane's user avatar
5 votes

Metal coating 3D printed parts (electroless plating)

Good day, I have experience in applying electroless nickel on difficult 3D parts, in your case, it's exceedingly difficult to do it directly to the printed piece. You will need to seal the piece with ...
Marvin Sevilla's user avatar
4 votes

Are there any metals that exhibit a large glass state?

I spent some time looking at making an FDM machine that would print bronze filament. An alloy commonly made into wire had a difference between the solidus and liquidus temperature of only 50 degrees ...
cmm's user avatar
  • 4,571

Only top scored, non community-wiki answers of a minimum length are eligible