Jump to content
Ultimaker Community of 3D Printing Experts
jonatanrullman

Main fan not permanent

Recommended Posts

Hi,

 

I bought myself a third UM2 yesterday. What can I say, with a couple of upgrades to make it a sort of 2+ I simply love these machines.

 

This particular one was bought several years ago but the guy wasn't much interested in 3D printing, just 3D prints. He never got it working properly. So it has run 221 hours. Got eight spools of plastic into the deal as well. Paid €1100 so I'm happy. Though regretfully I suspect that the seller isn't as he originally wanted €1500 and he was a really nice guy. Buyers market though, there was two nearly identical for sale about 1,5 drive from each other and the other guy told me later that he would have taken €800 if i had offered it.

 

Anyway. This one has a weird feature compared to my other two. The main fan only activates when the extruder hits 50 degrees C. I know about this feature from Marlin of course, I just thought the UM2 wasn't able to use it.
Was this an experimental feature somewhere along the line or is it a hidden feature you have to activate in the firmware or something? I would love to have this on my other two machines as well.

 

Cheers

Share this post


Link to post
Share on other sites
1 hour ago, jonatanrullman said:

Anyway. This one has a weird feature compared to my other two. The main fan only activates when the extruder hits 50 degrees C. I know about this feature from Marlin of course, I just thought the UM2 wasn't able to use it.

 

This depends only on the revision of the main board. On the older boards (Rev. 2.1.1) the 5 Volt supply for the small fan is hard wired and not switchable. This has changed for newer boards, that are used for the UM2+ (Rev. 2.1.4).

A cheaper option for older machines would be a bimetallic temperature switch and a bit of tinkering, see here:

UM2-RearFan-Automatic

Edited by tinkergnome
  • Like 3

Share this post


Link to post
Share on other sites

I see. My newest one is probably a later batch then. I was hoping I had just missed something.

 

My other two are fairly quiet. My very first one was very loud but I didn't notice until I got my second one and realised how quiet it should be. I think the second one was pretty early because it had the very low light encased led strips. Anyway, I ordered a new fan for the loud printer and they are all just fine. Would have been even more quiet with it off though.

I might get one of those switches and mount on the side I guess. It won't fit on the top because I use Alexander Leisentritts modified print head. It's not a really big deal, just very nice that the fan shuts off when not in use.

 

Cheers

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

Announcements

  • Our picks

    • Architect Design Contest | Vehicles.
      We're open for entries! - Design and submit your 3D designs of architectural entourage - vehicles - for a chance to win a large filament pack. Presenting an idea, an architectural design or something as big as an urban project isn't easy. A scaled model can really help to get your idea across.
        • Like
      • 24 replies
    • What The DfAM?
      I'm Steve Cox, an experienced engineer familiar with 3D printing. I wanted to share some DfAM guidelines with this community to help and make stronger parts.
      I'm also an Autodesk Certified Instructor for Fusion 360, so many of the images in ...
        • Thanks
        • Like
      • 22 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!