[PRINTABLE] Series 1 Fan Duct

Share any mods you have made and the awesome results.

Moderator: Elijah

jbrisbin
Posts: 80
Joined: Fri Mar 15, 2013 12:37 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2580 jbrisbin
Mon May 06, 2013 12:52 pm

How feasible would it be to move to a 60mm or 80mm fan?

40mm fans optimized for high backpressure (as this application is) are very scarce and seem to be loud enough to warrant hearing protection.

Larger fans can be both better able to handle the higher pressure and much quieter (not to mention much more available).

Could a larger fan be made to fit? (I still don't have my own printer, it is supposed to come off the line today. :D )

Liquid
Posts: 579
Joined: Sat Feb 16, 2013 12:46 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2581 Liquid
Mon May 06, 2013 12:55 pm

A 60mm fan should fit within the width of the head for sure, the bracket would need to be modified though, or a new one created.

These little fans seem to do the trick. Im using it stock until I create a circular duct.

LaserGnomes
Posts: 1058
Joined: Thu Dec 06, 2012 10:15 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2582 LaserGnomes
Mon May 06, 2013 1:40 pm

I'm noticing temp swings of 5' without the slit for the head.

I'll reprint and test and let you know if the slit indeed solves the issue.

Liquid
Posts: 579
Joined: Sat Feb 16, 2013 12:46 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2583 Liquid
Mon May 06, 2013 2:50 pm

Im working on a ring duct version but I have to take some measurements to make sure it will clear the sides of the actual gantry. Plus Im not exactly sure how long this is going to take to print. Might have to rethink the shape to make it feasible.

Image

jbrisbin
Posts: 80
Joined: Fri Mar 15, 2013 12:37 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2588 jbrisbin
Mon May 06, 2013 6:48 pm

That looks promising. I assume the outlet vents toward the center of the open area.

At least one of the thingiverse implementations used a snap- or glue-in ring to avoid support in the exit area of the circular duct. In fact, they used several separately printed parts in that version.

IIRC, you have the fan shroud down on the build platform. If that is the case, I can see that it might be hard to print the outlet end without a lot of support. Is that what concerns you?

If so, this might help:
The upper part of the outlet ring appears to be more or less parallel to the bed surface.
Changing it to slope downward, away from the fan might make the overhang easier to handle and, as a secondary benefit, might help equalize the pressure on the front and back sides, making the flow more consistent.

Since I am not sure I conveyed what I meant, I am suggesting that the height of the cylindrical outlet plenum be much less on the side away from the fan than on the side toward it.

If you were looking at something else, then never mind.

Liquid
Posts: 579
Joined: Sat Feb 16, 2013 12:46 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2667 Liquid
Thu May 09, 2013 12:16 am

Well here goes.... Hopefully this prints ok
Attachments
Untitled-2.jpg
Untitled-2.jpg (59.52 KiB) Viewed 2416 times
Untitled-1.jpg
Untitled-1.jpg (101.24 KiB) Viewed 2416 times

LaserGnomes
Posts: 1058
Joined: Thu Dec 06, 2012 10:15 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2668 LaserGnomes
Thu May 09, 2013 12:57 am

GL!

Liquid
Posts: 579
Joined: Sat Feb 16, 2013 12:46 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2669 Liquid
Thu May 09, 2013 1:04 am

TY lol. Its underway right now

Liquid
Posts: 579
Joined: Sat Feb 16, 2013 12:46 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2670 Liquid
Thu May 09, 2013 3:03 am

So far so good. Almost done.

Image

DONE!

Image

Image

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Image

UPDATE:

Got 360 air movement! Looking good so far! Not bad for a .25 print with filament binding due to being at the end of the reel.

LaserGnomes
Posts: 1058
Joined: Thu Dec 06, 2012 10:15 pm

Re: [PRINTABLE] Series 1 Fan Duct

Post: #2679 LaserGnomes
Thu May 09, 2013 12:00 pm

Now we need a better bracket... that attaches from both sides to support this thing!


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