Hot answers tagged

9 votes
Accepted

Can I increase retraction length on an E3D v6 beyond 2 mm if I have a really long Bowden tube?

Yes, you can increase retraction past E3D's max 2 mm recommendation to compensate for Bowden tube stretch and slop. The reason for the recommendation is that jams will occur with most all-metal ...
  • 6,446
9 votes
Accepted

PTFE pulled into extruder gears

You are probably right, I have a Tarantula as well, and this happened many times to me. The reason is mostly because the hotend fan gets too hot, stops working, then, the filament in the aluminium ...
7 votes
Accepted

Installing bowden tube into E3D V6

You may need to secure the pneumatic coupling in the closed position with a small plastic clip (which should be supplied with the hot end). You can print your own, providing that your printer will ...
  • 2,972
7 votes

Can I increase retraction length on an E3D v6 beyond 2 mm if I have a really long Bowden tube?

As pointed out by this article, you can try to: Increase your speed for travel moves Increase retraction length Place objects strategically during print 1. Calibrating travel speed When calibrating ...
7 votes

Switched to a Bowden setup. Should I retract the filament out at the end of a print?

It's okay to leave the filament in the hot end, as long as you let it cool down with the hot end cooling fan running. From comment: That's not an issue, you can simply leave it in the hot end. The ...
  • 1,277
6 votes
Accepted

Would adding fiberglass packaging tape to a bowden tube be beneficial?

The question seems to be built on a false premise, namely that the major extrude/retract errors in a Bowden design come from tube stretch. The PTFE tube is not significantly elastic, actually it is ...
6 votes

Clogging due to heat creep: buy new cooler or new hotend?

To fight heat creep, you must understand why this is happening. Heat creeps up the hotend assembly (into the cold end) as a result of incorrect settings or hardware setup causing the filament to ...
  • 31.4k
5 votes

What makes an extruder right handed?

The short answer to identify what extruder type you have is the rotation of the extruder gear. CCW rotation to extrude = right-handed extruder Detailed explanation is below. In addition to the ...
  • 31.4k
5 votes
Accepted

What are the limiting factors when trying to print flexible filaments with a Bowden extruder setup?

As a user of an UM3E, which uses Bowden tubes and has TPU as an available material, I can tell you that the kinking issues can be alleviated or downright avoided. I've printed quite a few things ...
  • 504
4 votes

How to straighten PTFE tubes?

I just plugged the ends of tube and soaked it in real warm water for 5 minutes then stretched it out on a table. That helped then the hard part I spooling it up against the arch and soaked it again. ...
4 votes

Can I increase retraction length on an E3D v6 beyond 2 mm if I have a really long Bowden tube?

To my experience, there is absolutely no problem in increasing retraction in E3D assemblies up to at least 5 mm. Typical retraction distance for my Bowden system is 3.5 mm (ABS). Clogging ...
  • 868
4 votes

Can I increase retraction length on an E3D v6 beyond 2 mm if I have a really long Bowden tube?

In addition to the already excellent answers above, I want to mention that maybe a change in hotend temperature (lower) can also help reducing ooze/stringing. That is, if not other parameters prevent ...
  • 2,854
4 votes
Accepted

What do you call this effect in 3D printing and how can I remove it?

What you see on the outer surface is called "zits and blobs". These small imperfections you experience are "zits" (larger ones are referred to as blobs). As the extruder needs to start and stop as it ...
  • 31.4k
4 votes

What makes an extruder right handed?

when thinking about righ-handed extruder or left-handed extruder it's good to know that there is no magic or any other science rule behind this naming convention. it's just an arbitrary explanation ...
  • 3,438
4 votes

What makes an extruder right handed?

This is an example of a right handed extruder setup: And this is an example of a left handed extruder setup: I believe that you can can choose whatever one you favor. With the right handed setup, ...
  • 433
4 votes

Cold end coupler stuck on Bowden tube

After depressing the retaining ring, try pushing the Bowden tube further in to the coupler. This should disengage the internal sprung clip, and allow removal of the Bowden tube. Good quality pneumatic ...
  • 2,972
3 votes

What makes an extruder right handed?

It usually doesn't matter whether you get a right-handed or left-handed one. The reason the two different variations exist is because some people use a dual extruder setup. If you have two extruders ...
3 votes

What are the limiting factors when trying to print flexible filaments with a Bowden extruder setup?

To also validate the first answer, I have been printing with TPU95A for a number of years and it has been one of the most reliable materials to use. The strength of the product alongside the flex ...
3 votes

Clogging due to heat creep: buy new cooler or new hotend?

I resorted to google to find a candidate image which might be similar to your hotend. Now, it is safe to assume that a like-for-like replacement will not improve matters significantly. It is also a ...
3 votes
Accepted

Bowden tube clog

As a short-term fix, grab a twist drill bit that is on the order of 1.5 mm diameter (assuming a 1.75 mm tube). Using a hand drill, slowly and gently drill out the clogged filament. Obviously you ...
3 votes

Bowden tube clog

If you are able to force the filament from the interior of the bowden tube without causing damage to the tube, you will be able to determine the cause of the clog. My bowden tube clogged recently, but ...
  • 10.2k
3 votes

Extruder Clicking without Extrusion Problems

If an extra few degrees of heating the hot end does not work, you could try to increase the amount of Ampere through the steppers. Increasing the current will increase the torque of the stepper. The ...
  • 31.4k
3 votes

Extruder Clicking without Extrusion Problems

Even though you may have acceptable extrusion, any clicking from that area of your printer is likely to be a missed step on the extruder motor. This may be insignificant with respect to print quality, ...
  • 10.2k
3 votes
Accepted

How does slipping Bowden tube affect retraction or does it at all?

The slipping does result in lost retraction distance. It does not result in underextrusion, lost material (except possibly via having insufficient retraction after the reduction), or anything like ...
3 votes

Bowden-direct hybrid

A Bowden tube is by design fairly small diameter to match the filament within, constraining the forces applied by the remote extruder mechanism. As you've noted, friction is a consideration. For your ...
  • 10.2k
3 votes
Accepted

What reasons are there not to convert Ender 3 to direct drive extrusion?

There are really no reasons not to convert to direct drive, provided you use a good one. Many of the direct drive kits, especially the ones that reuse the existing giant NEMA-17 stepper, are not very ...
3 votes

Ender 5 Plus Bowden tube keeps popping out

The coupler for the Bowden tube is probably worn out or the tube end has been scraped so that the coupler can't grab it or you have left out the clamp on the coupler. The coupler has a sleeve that ...
  • 712
2 votes

How to straighten PTFE tubes?

A colleague of me puts spring steel wires in the tubes and leaves the tubes on the central heating for a certain amount of time (probably hotter than 60 °C).
  • 31.4k
2 votes

How to straighten PTFE tubes?

You could use a hairdryer to introduce a spot-bend where you need it.
  • 21
2 votes

Extruder Clicking without Extrusion Problems

One thing or another limits (controls) the flow form the nozzle. in ideal operating conditions, the molten/softened plastic is kept in a small pool in the nozzle, without high pressure, and ...
  • 4,418

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