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Dual Extruder Fan Shroud

by ColinBB, published

Dual Extruder Fan Shroud by ColinBB Nov 5, 2012

Description

I saw documentation of such shrouds put to good use to help the overall print quality. This is my take of the idea and is fully printable.

Recent Comments

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Cool, thanks. Been thinking the black ones could afford to be a little more flexible, thought those might be the ticket. 
The semi-translucent filament tubes were from a limited run here and there when MBI could not source the black tubes. They are dispersed intermittently as the product was available. Nearly the same tube just different colors. 
 I guess this is more of a coincidence that I printed this part in PLA. I generally use ABS, which this add-on is geared for. Here is my reference for designing this: thingiverse.com/thing:32660
I do not personally know if this has helped yet. Just something I wanted to design and test for myself.

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Instructions

My first idea for this was a sort of origami print that was flat to begin and could be folded to the desired end shape. But, of course, why not just print that shape. So, I have printed this at .25mm as to keep the time down.

You may, I have not, run into a problem with the X-Endstop switch not engaging due to the extra thickness of the print. If this does occur, there are a couple things you can do. One, is to alter the thickness of the right wall. The second, is to pull the switch toward the center of the machine by a few millimeters. This should be done with a light hand.
Interesting.  In my experience a fan on the printed object itself has improved print quality - especially with thin or narrow parts or with PLA which tends to stay molten a little longer than ABS.  Do you find this fan cover has helped your print quality?
 I guess this is more of a coincidence that I printed this part in PLA. I generally use ABS, which this add-on is geared for. Here is my reference for designing this: thingiverse.com/thing:32660
I do not personally know if this has helped yet. Just something I wanted to design and test for myself.
Curious! Worth a shot. 
And hey, those clear filament guide tubes I've been seeing.. Are those now the stock Replicator 1 tubes? Mine are black, just curious if that's something people are upgrading to, or if they changed that at the warehouse at some point.
The semi-translucent filament tubes were from a limited run here and there when MBI could not source the black tubes. They are dispersed intermittently as the product was available. Nearly the same tube just different colors. 
Cool, thanks. Been thinking the black ones could afford to be a little more flexible, thought those might be the ticket. 
where is the air allowed to pass through the heat sinks?
 The main purpose of this shroud is to keep the air off the print itself. The air follows to same, yet contained, path through the heatsink. This also does not fully trap the air, there is no dead end. The air is allowed to be pushed to the rear of the extruders.
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