Jump to content
Ultimaker Community of 3D Printing Experts
Talmar

Filament for UM2

Recommended Posts

Hey all

I've been using 3mm filament with my Unimaker2. I see lots of people like using the 1.75mm instead. How much of a difference is there? Should I consider switching over with my next purchase? Should I be using the 1.75 with the .4 nozzle? Since the filament is being melted as it goes into the nozzle, I don't see how it should matter all that much...

thanx all for your feedback!

Share this post


Link to post
Share on other sites

Some people claim they can print 1.75mm on a UM2 with no modifications. I haven't tried it myself.

I really think you need to change a couple of things to do so, including the head and ptfe coupler.

Why would you want to change anyway?

Share this post


Link to post
Share on other sites

The only real advantage it's less dripping and you can cut down retraction distance to 2.5. Works great when printing lots of stuff at the same time at fast speeds where 2.85 would drip more.

To print with reliability you need a new olsson/ptfe/nozzle/bowden. 3dsolex offers 1.75 versions. On my um2 hotend I use a bowden 6-2mm. Since you are on USA you can contact @gr5 since he sells 3dsolex there.

Edit. Also you might want a new feeder bolt since um2 bolt it's designed for 2.85 filament. Mk7 works great on my setup with just robert feeder.

Edited by Guest

Share this post


Link to post
Share on other sites

Unless you have hundreds or thousands of dollars worth of 1.75mm filament I would stay away from the conversion kit.

You don't actually need a 1.75 bowden but it helps quite a bit. I will *finally* be getting some soon (after many months waiting from 3dsolex). 3dsolex is finally starting to get more serious regarding 1.75mm conversion kits and nozzles. Initially we thought we'd be selling maybe 10 kits ever. But after testing the waters there does seem to be a small niche market.

Share this post


Link to post
Share on other sites

I think a new bowden it's a must if you really want to print with it. Hysteresis inside the bowden makes the filament twist on itself and snap when using the standard bowden. Ofc for casual print it doesn't matter but to print-print-print, you need a good bowden. Like you used to said gr5, you need the proper tools.

Share this post


Link to post
Share on other sites

I would trust neotko.

I have not used this product yet (1.75mm conversion) but intend to some day. I got my information from Anders Olsson - he claims the 3mm bowden is great with 1.75mm filament. But he was printing with his strange filament I assume and probably had zero retractions or something. Or maybe he printed slow.

Share this post


Link to post
Share on other sites

I see, now I get why carl from 3dsolex wants to make a concave cuvr so the filament slips better on the new umo/umo+ coupler on tfk2 that will sell soon. With a normal bowden without that iit could be imposible to insert the filament without a same id bowden. The twist snap happens indeed with retractions, the filament contracts and curves inside until it snaps on itself on pla quite fast.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Our picks

    • How to 3D print with reinforced engineering materials
      Ultimaker is hosting a webinar where we explain how you can achieve and maintain a high print success rate using these new reinforced engineering materials. Learn from Ultimaker's Product Manager of Materials and top chemical engineer Bart van As how you can take your 3D printing to that next level.
      • 0 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
×

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!