Hot answers tagged

21 votes
Accepted

What are the parts that make up a hotend, and what do they do?

This varies by hotend design. The following is a list of components which you might find in a typical hotend, but note that different designs may integrate these components to some extent. For ...
user avatar
17 votes
Accepted

Which is the difference between MK6 and MK8 and even MK10?

All credits for the following go to user "vermon" who posted in this thread. The following is a heavily amended version from his longer answer there. Makerbot did start its hotend series using MK as ...
user avatar
  • 4,537
16 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 ...
user avatar
13 votes
Accepted

What is the best length of the melting zone in the hotend?

Short melting zone melts material in small amounts which is suitable for thin layers with small nozzles. In opposite, long melting zone can heat a big amount of filament which is needed for fast ...
user avatar
  • 1,911
11 votes
Accepted

What is stopping us from mixing 3D filament colors in an Extruder?

I just started with google and phrase "3d printing color mixing" and on the first place (in fact first two were valueless adverts) I got this Instructables - DIY Full Color Mixing 3D Printer. How it ...
user avatar
  • 3,438
10 votes
Accepted

Heatercartridge bolt stuck

Don't Panic! First of all, a printhead caked in PLA is usually not a death sentence, it is often a temporary setback. Let's start in steps! Step 1: remove the extruder We want to work on the hotend, ...
user avatar
  • 19.4k
9 votes

Efficient and easy way to thermally insulate the heat block of the hotend?

The "quick and dirty" approach is to just slap a bunch of Kapton tape on there. The more the better! (Until you need to dismantle for maintenance, anyway.) I find pre-cut ceramic tape + kapton tape "...
user avatar
  • 6,446
9 votes
Accepted

How to choose an extrusion temperature?

Printing temperature basics Manufacturers generally specify a somewhat wide range of printing temperatures, and what temperature you should actually need can only be determined by trial and error: ...
user avatar
9 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 ...
user avatar
8 votes

Efficient and easy way to thermally insulate the heat block of the hotend?

I ask myself why people hassle with kapton tape when it is so easy to use teflon sealing tape to isulate the hotend. This tape is slightly foamed to allow better sealing when used for sealing "tube ...
user avatar
  • 81
8 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 ...
user avatar
  • 868
8 votes

What is stopping us from mixing 3D filament colors in an Extruder?

The three in one print head is the closest to your concept of gradient printing and does some nice transitions. But does not meet your color mixing. Which I assume your looking for there is ...
user avatar
8 votes
Accepted

Would a really short melt-zone be beneficial

There is a trade-off between the length of the melt zone and the speed at which you can print. The filament itself is somewhat of an insulator, so as the outside of the filament is heated up by being ...
user avatar
8 votes

Can commodity 3D printer extrusion hardware and filament be used for injection molding?

Injection molding requires two major components: pressure and heat. So your question can be broken down into those two halves: can your average extruder handle injection molding temperatures, and can ...
user avatar
  • 876
7 votes
Accepted

Is it necessary to have both hot ends on a dual extruder printer at the same height?

I have a dual extruder Replicator 1 and having the nozzles at the same height is a must and albeit a bit of a struggle otherwise. At one point, I had to disassemble my extruder head and the nozzles ...
user avatar
  • 6,214
7 votes
Accepted

Prusa i3 hotend not getting to the temperature that I want (180 to 230 celsius)

Usually, this kind of problem is due to an issue with the control loop of the temperature. You can try to do PID Tuning by running the command M303 E0 S200 C8. This ...
user avatar
7 votes

Why have heater blocks on hotends?

Let's look at the elements and what they do: The Heater Cartridge (blue) is the device that converts electric to thermal energy to melt the plastic. 30 and 40 W are common. The Thermosensor (red) is ...
user avatar
  • 19.4k
7 votes
Accepted

What type of plug is this?

As 0scar noted, this looks suspiciously like a JST connector, but the left one is not a JST RCY connector and it is neither one of the common JST PH nor JST XH, JST manufacturer pages show. In fact, ...
user avatar
  • 19.4k
6 votes

What is stopping us from mixing 3D filament colors in an Extruder?

A Kickstarter campaign just finished for a full color 3D FDM printer, the RoVa4D Full Color Blender 3D Printer. It used CYMK printing and includes black and white filament for 5 color filament feeds, ...
user avatar
6 votes
Accepted

Hot end jamming very quickly

You are suffering from what is called "heat creep". Molten filament is creeping up the heat break and into the bowden tube, where it is causing a jam. You need to install a proper radiator block that ...
user avatar
  • 2,972
6 votes
Accepted

What is the power consumption of the heatbed and hotend?

I have a Kill-A-Watt meter so I got a pretty good measurement for you with my Anet A6. Like Petar said each model is different but this should give you a idea. When heating both the nozzle and heat ...
user avatar
  • 1,203
6 votes

Hot end temperature varies during print

There could be a number of reasons for that behaviour: Please check following items: part blower/fan cools down the nozzle - stop the fan material is extruded at high speed and takes the heat loose ...
user avatar
  • 1,922
6 votes
Accepted

What parts are suitable replacements for an Ender 3 Pro?

The Ender 3 takes an M6 thread (metric 6 mm diameter). Measurement of stock nozzle shown. Most sellers will list compatible printers Ender 2, Ender 3, Ender 4, CR-10, CR-10S, CR-10 Mini, CR-10-...
user avatar
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 ...
user avatar
  • 2,972
6 votes
Accepted

Why don't 3D printer heads use ceramic inner walls?

It can be done cheaply, as two different users have proven, see A practical 10 Cents Ceramic tube hotend, and; Hotend with ceramic parts. However, as Paulster2 states in his answer, there are some ...
user avatar
  • 5,717
5 votes

Cleaning E3D hotend and tuning with Cura?

Usually there is no need to clean the hotend, as filament sticks well to itself rather than to the inside of the hotend. If there are remains - the simplest way to clean it up is to extrude 5-10 cm of ...
user avatar
  • 3,438
5 votes
Accepted

Teflon tubing in nozzle throat coming out?

It looks like you got too tight nozzle, too cold hotend or extruding speed is too high (all could be in the same time of course). As filament goes into the teflon tube (coldend) and then into hotend ...
user avatar
  • 3,438
5 votes

What is stopping us from mixing 3D filament colors in an Extruder?

As darth_pixel points out, people have had limited success with feeding multiple colors into a diamond hotend and mixing them, but I would argue this is not truly what you're looking for. The problem ...
user avatar
5 votes

What is stopping us from mixing 3D filament colors in an Extruder?

Branching off of TomvanderZanden's answer, this process cannot easily be done with an extruder alone. To properly color polymers, a pigment must be added during the initial treatment process (...
user avatar
  • 6,214
5 votes
Accepted

Blow vs suck air over hotend's heatsink

Getting hot air from the radiator is definitely wrong idea because of few reasons: hot air can damage your fan (as they are usually not heatproof). Cold air cools the fan cold air is denser so fan ...
user avatar
  • 3,438

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