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Replicator Extruder Fan Guard

by garyacrowellsr, published

Replicator Extruder Fan Guard by garyacrowellsr Jul 1, 2012

Description

A couple of people on the forum have mentioned that they've broken blades on their Replicator extruder fans. Well, that sounds like a need for a fan guard.

I can't decide which one I like better, the radial, or the honeycomb pattern; so I uploaded both. To tell the truth, I'm not exactly thrilled with either, and I'm expecting someone to come up with a snazzier pattern.

The honeycomb pattern is probably more airflow restrictive, and it might benefit from a larger honeycomb pattern.

Recent Comments

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printed a couple of these.. imported it into Tinkercad and stretched it 4mm vertically, then glued some filament off cuts to make it fit well again.... no issue with fan whine anymore...:) thanks for the design.

Actually I've taken the liberty of doing it. I'll post a derivate.

I printed out one of these, and i still chipped a fan! There is a critical design flaw, which is that it doesn't account for my laziness.

I do a terrible thing, which is try to take off the fan to clean the extruder, while its running (i know i know). However this requires that i take off the protective plate to get at the screws, which is traditionally when i bang the fan and break a blade.

Perhaps a single extruder version, with room to get at the screws underneath? 

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Instructions

The honeycomb version had to be printed slow, with absolute levelosity to get a full grid pattern to print.

The radial pattern is easier.

Either will take a bit of cleanup to sharpen up the drool on the overhang for the clips.

It just slides down over the fans from the top, and it should fit snugly. Be sure that the bottom is all the way down against the carriage.

UPDATE 7/18/12: Some people had noted that adding the guard caused a high-pitched whine from the fans. The new files added (all of the *2 versions) move the guard out a bit from the fan blades. This should relieve some of the noise. (I never noticed it much since my Replicator is fully enclosed.)

Comments

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northshore on Sep 30, 2012 said:

printed a couple of these.. imported it into Tinkercad and stretched it 4mm vertically, then glued some filament off cuts to make it fit well again.... no issue with fan whine anymore...:) thanks for the design.

CrazyJaw on Sep 27, 2012 said:

I printed out one of these, and i still chipped a fan! There is a critical design flaw, which is that it doesn't account for my laziness.

I do a terrible thing, which is try to take off the fan to clean the extruder, while its running (i know i know). However this requires that i take off the protective plate to get at the screws, which is traditionally when i bang the fan and break a blade.

Perhaps a single extruder version, with room to get at the screws underneath? 

CrazyJaw on Sep 28, 2012 said:

Actually I've taken the liberty of doing it. I'll post a derivate.

northshore on Sep 10, 2012 said:

Thanks for doing this.. ruined a couple of fans..!! Having troubles with the print.. can you specify the settings... the filament is ok for the border, then the extruder looses the grip on the feed as it tries to start the honeycomb infil.. ?

garyacrowellsr on Sep 12, 2012 said:

I was pretty green when I did this (still am), so I'm sure I did nothing fancy with the settings. It is really hard to get the honeycomb version to stick though - I recommend the radial version because it prints much easier. You might try it with an acetone/ABS slurry wiped on the platform. I've never done this but people have reported good luck getting things to stick that way.

GaryJSmith on Sep 3, 2012 said:

I wish I had found this a week ago...

CrazyJaw on Aug 18, 2012 said:

Awesome. Perhaps a bit late since I've already shattered one of the fans (keep an eye on your hex wrench), but still a damn good idea.

garyacrowellsr on Jul 10, 2012 said:

I noticed the whine but it wasn't intrusive on my enclosed Rep. I can see how it would be annoying though. The whine is caused by the fan blades spinning in proximity to the stationary guard. I have altered the files to space the guard outwards an extra 2mm. I'm hoping this will ease the noise. It'll be tomorrow evening before I can print them up, and if that works I'll post new files.

LiquidBeef on Jul 8, 2012 said:

I get a high pitched wine with FanGuardR. Anybody else?

deprocess on Jul 9, 2012 said:

We are as well. The honeycomb pattern is a little better.

sgrover on Jul 1, 2012 said:

I tried putting googly eyes on the fans. They fell off when the fans spun up. Putting em on the fan guard would solve that problem. But it'd be great if someone were to create a guard with eyes built in. I'll do it eventually if no one else does, but you shouldn't wait on me as I'm kinda busy these days... :)

DocRayStantz on Jul 6, 2012 said:

You know this thing is begging for a derivative with dual-struded pupils, smiley faces, or other awesomeness. If only I had the skills.

DocRayStantz on Jul 3, 2012 said:

Yeah, I have to put googly eyes on my printed guard. 8)

LiquidBeef on Jul 1, 2012 said:

Great idea!

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