Jump to content
Ultimaker Community of 3D Printing Experts
Sign in to follow this  
feik

Fan Base improvement

Recommended Posts

https://www.youmagine.com/designs/fan-base-um2

I guess that we all can agree that the OEM fan base for the UM2 it's not the best.

After trying different https://www.youmagine.com/designs/fanduct-another-idea, I had an idea to improve the quality of the prints even more: focus the air flow more towards the nozzle. This way the plastic will solidify quicker, hence the quality when doing big overhangs or bridging should be improved.

The differences are considerable when compared with the original fan base. In order to test it I have printed the original ultimaker robot .gcode with the OEM fanbase and the new design. Results below:

image

 

image

Any feedback is welcome!

 

Share this post


Link to post
Share on other sites

Hi,

Nice design, i've myself thought a bit about enhancing the cooling on my UM2, but i didn't find the time yet to put my idea in my Cad software :)

One question: did you print it in PLA or in something else? How does it react to the surrounding heat?

I had printed a fan improvement but the airflow was interfering too much with the nozzle temperature (it wouldn't stabilise)

 

Share this post


Link to post
Share on other sites

I have printed the fan base with the original ultimaker blue PLA. To avoid heat problems I used a thin sheet of aluminium (coke can) around the hot-end.

I have no problems with the air-flow interfering the nozzle so far. Please tell me if you have any.

 

Share this post


Link to post
Share on other sites

Hi Feik,

I can confirm that work like a charm, thank you for sharing!

Printed with the original Ultimaker black PLA, added, following your suggestion, the aluminium shield (from a beer can).

Yesterday I printed for 16 hours without any problem and ... yes ... better quality :)

Guglielmo

 

Share this post


Link to post
Share on other sites

Nice fan design, :smile: very tempted to print this out and try it!

Basic questions: which orientation do you print this in? did you use supports?

Also, where are the details for the heat shield which gets mentioned (and where does the shield go)?

https://s3-eu-west-1.amazonaws.com/files.youmagine.com/uploads/image/file/46629/Shield-20140508.png

 

Share this post


Link to post
Share on other sites

Ok, I printed this "upside down" from the orientation that Cura loads it. i.e the ventilation grill sits on the glass plate (see photo)

 

I used support "touching buildplate" (35% fill, 40mm/s)

 

With the part "upside down" Cura estimated the build time as 3hrs 54mins, with the part "normal way up" 5 hours 45 mins. Quite a difference... as well, the only support material I have to cut away upside down is around the ventilation grill.

 

I aborted the print when it reached the two "tangs" which I guess are there to just tidy up the fans wiring? You can see this in the photo as the two cross hatched areas on top of the print.

 

Couple of suggestions:

 

1) Loose the tangs. They're not really necessary (imho) and just add complexity to the part. *

2) Can you make your ZETOFF label a little smaller? (it's a bit in yer face) and just adds extra complexity.

3) You could probably loose the ventilation grill altogether and just have a hole in its place.

 

I hope these observations are helpful..

 

I'm really pleased with the print and can't wait to fit it to my UM2 and try it out. Really nice job Feik in putting this together! :smile:

 

(Edit * or are these for the heat shield... oops me bad - they are for the heat shield)

 

Fan CSnap1

 

Share this post


Link to post
Share on other sites

Guglielmo, in this orientation?

Snap1

 

Having pealed my print off, it took a lot of sanding to make the front look acceptable and neat to the eye. Frankly the over sized "ZETOFF" lettering just makes the whole thing look like crap marring the front face. I'll try printing this again in your orientation tomorrow.

 

My main concern in orientating the print as I did was to ensure that the important air channels printed out faithfully.

 

Share this post


Link to post
Share on other sites

Guglielmo, in this orientation?

 

Yes Chris. I have printed twice, still with the same orientation, just to test differente resolutions (0.1 and 0.06) and, both times, I had no problems :)

But I agree that "ZETOFF" logo would be nicer and less intrusive if smaller and in one corner ;)

Guglielmo

 

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
Sign in to follow this  

[[Template core/front/global/_customFooter does not exist. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]
×

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!