1 Topic by gwfami

  • gwfami
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Topic: Fan possibilities

Been working with Polypropylene, extruding at different temps, heights, fan on/off, etc. 

I've been using a 64mm fan, which cools well, but it actually distorts the extruded plastic so that instead of being round, it's oval in shape.

I've been thinking about modifying this and having the extrusion pass through it on the way down.

http://www.thingiverse.com/thing:69557

Any thoughts?

2 Reply by laird

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Re: Fan possibilities

gwfami wrote:

Been working with Polypropylene, extruding at different temps, heights, fan on/off, etc. 

I've been using a 64mm fan, which cools well, but it actually distorts the extruded plastic so that instead of being round, it's oval in shape.

I've been thinking about modifying this and having the extrusion pass through it on the way down.

http://www.thingiverse.com/thing:69557

Any thoughts?

My wife came up with something along these lines - she put a large index card bowed in front of the fan (down on the left and right, up in the middle), and punched holes down the middle, so it forced the air directly at the filament. It also serves to hold the filament straight, a nice "plus".

3 Reply by Ralphxyz

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Re: Fan possibilities

Hey laird do you have some pictures?

Now what would happen if you had surround attached to a vacuum?

You would be pulling fresh air around the filament in all directions.

Plus you'd be sucking fumes in.

Ralph

4 Reply by gwfami

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Re: Fan possibilities

Put a 60mm fan on it and it didn't blow enough air through the funnel to cool.  Chalk it up to experience I guess.

5 Reply by elmoret

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Re: Fan possibilities

Axial fans have really poor static pressure. You'd need a centrifugal blower to overcome that type of resistance with any real CFM.

Filastruder - the robust, inexpensive filament extruder
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6 Reply by adrian (edited by adrian 2013-11-12 11:31:56)

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Re: Fan possibilities

elmoret wrote:

Axial fans have really poor static pressure. You'd need a centrifugal blower to overcome that type of resistance with any real CFM.

big_smile

http://www.ebay.com/itm/Outdoor-Electri … 1057351216

big_smile

(pfft... only 380W though.... its a tiddler )

7 Reply by jgharris80

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Re: Fan possibilities

http://www.ebay.com/itm/3-pcs-Brushless … 0389680237

Maybe something like this?

-"Simpler is better, except when complicated looks really cool."
-"As soon as you make something fool proof...along comes an idiot."
-"I have not failed.  I've just found 10,000 ways that won't work."  ~Thomas Edison