Jump to content
Sign in to follow this  
approx

How do you guys swap filament?

Recommended Posts

Posted · How do you guys swap filament?

How do you guys swap filament from the printer - just wondering ?

I spend a lot of time changing filament and adjusting the tension screw after a change etc. I thought it would be ok to just snip the filament from the cold end of the extruder and manually insert the new filament and rotate the extruder gear, until the new filament is in the bowden tube....The new filament would push the old one for the first few minutes of print..this is where the problems happen.. The new one always strips when it tries to push the new one mid way through (I then increase/decrease the tension screw which makes matters worse)..

so, I have begun to take a different approach now - if I want to swap filament - I heat the nozzle to about 150 degrees, pull the entire filament out manually..then insert the new one...and adjust the tension screw - this works fine most of the time (except when I heat the nozzle too much - which causes the bowden to sometimes get plugged when I pull the filament)....

Share this post


Link to post
Share on other sites
Posted · How do you guys swap filament?

I don't do it often... but I heat to 160, unlatch and swing out the extruder tensioner, pull out the filament, push the new filament into the bowden by hand until it stops, close the extruder tensioner and re-latch. set the temp to your normal extruding temp (180) and feed the filament be turning the gear , or using printerface, until it resists. Extrude till you seen clean new color, print.

I don't touch the thumb screw. I've also added a jam nut to the thumb screw tightened against the tensioner block to keep it in place once I've found a good setting.

Since there's no spring on the stock tensioner, this totally won't work with filaments of different diameters...

Kyle

Share this post


Link to post
Share on other sites
Posted · How do you guys swap filament?

At 200 degrees I push the old one by hand or through control panel in RepG so that it is extruding.

Then I immediately pull it out by hand. It seems to reduce any blob on it this way.

Then push the new one as far as I can by hand and reclamp the lamp.

Then extrude a bit if I want to get rid of all the old before I start to print.

I don't adjust the screw at all.

Share this post


Link to post
Share on other sites
Posted · How do you guys swap filament?
I don't do it often... but I heat to 160, unlatch and swing out the extruder tensioner, pull out the filament, push the new filament into the bowden by hand until it stops, close the extruder tensioner and re-latch. set the temp to your normal extruding temp (180) and feed the filament be turning the gear , or using printerface, until it resists. Extrude till you seen clean new color, print.
I do the same, note that it works best if you do not wait when it reaches 160C, as it just needs to be hot enough to get the filament out, not to get a melted plug.

And instead of extruding till you see the new color, I print a 50% scale companion cube. Which prints in 12 minutes and flushes out the old color. I got like 12 of them already. For a better dual color mini companion cube I insert 5cm of the old color into the tube before your new color. So it gets a 50/50 color.

Share this post


Link to post
Share on other sites
Posted · How do you guys swap filament?

I have never printed the companion cube... so maybe i'll print one next time i need to swap filament..:)

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

  • Our picks

    • Ultimaker Cura | a new interface
      We're not only trying to always make Ultimaker Cura better with the usual new features and improvements we build, but we're also trying to make it more pleasant to operate. The interface was the focus for the upcoming release, from which we would already like to present you the first glance. 
        • Like
      • 182 replies
    • "Back To The Future" using Generative Design & Investment Casting
      Designing for light-weight parts is becoming more important, and I’m a firm believer in the need to produce lighter weight, less over-engineered parts for the future. This is for sustainability reasons because we need to be using less raw materials and, in things like transportation, it impacts the energy usage of the product during it’s service life.
        • Like
      • 12 replies
×
×
  • Create New...

Important Information

Welcome to the Ultimaker Community of 3D printing experts. Visit the following links to read more about our Terms of Use or our Privacy Policy. Thank you!