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RepRapPro Tricolor Mendel Fan Mount

by hlx_mr, published

RepRapPro Tricolor Mendel Fan Mount by hlx_mr Apr 17, 2013

Description

Fan mount for 40mm fans for the new RepRap Tricolor X-Carriage
Should improve print quality on small parts.

Warning: Mount is somewhat long, so check clearance for all axis

Recent Comments

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Thanks for the reply, I will print and mount it tonight then, thanks for the design too

Hi mihalisgr
It's an illusion. The fan is a tiny bit higher then the nozzle. The RepRapPro Mendel actually allows for small variations in extruder height (in order to be able to level up the three nozzles), so you might have to slighlty vary my design for your porpuses.

The photo shows the fan mount on a lower Z level than the actual nozzle. Is that an illusion or is it real? As I understand the nozzle should be very close to the printing surface so isn't this very bad?

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Instructions

Print
Fit 6 M3 nuts
Screw on fan
Screw into extruder slot (on the X-carriage), opposite of the target extruder

Comments

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mihalisgr on Nov 28, 2013 said:

The photo shows the fan mount on a lower Z level than the actual nozzle. Is that an illusion or is it real? As I understand the nozzle should be very close to the printing surface so isn't this very bad?

hlx_mr on Nov 29, 2013 said:

Hi mihalisgr
It's an illusion. The fan is a tiny bit higher then the nozzle. The RepRapPro Mendel actually allows for small variations in extruder height (in order to be able to level up the three nozzles), so you might have to slighlty vary my design for your porpuses.

Kabong on May 6, 2013 said:

I printed one of these out, hooked it up to a 40mm fan, wired everything and it all works. Unfortunately, it seems that the amount of air this blows on the print is insufficient to cool as it's printing (even with fan output set to 100% in repetier-host.

I'm particularly having trouble printing PLA out and was hoping this would allow me to remove the large oscillating fan that's currently pointed at my printer. What fan are you using? I purchased this model from Amazon: http://www.amazon.com/Noctua-4...

hlx_mr on May 6, 2013 said:

Hi Kabong

I use a Revoltec Air Guard. The draft that reaches the nozzle is indeed rather weak, but I do not know how to optimise the airflow. (The x-carriage design makes this rather hard.) Bigger server grade fans might give a better result.

When doing small prints, I have the slicer spend at least 20s on each layer. I'm currently doing a series of tabletop miniatures (pictures will be up in a couple of days). These print just fine considering the 0.5mm nozzle.

ajayre on Apr 20, 2013 said:

I printed this out - thanks for sharing it! The M3 nuts fit perfectly in the recesses so it must be the right size, however the bolt hole pattern for the fan isn't square, which means I can't attach my 40mm fan.

Any ideas what went wrong?

hlx_mr on Apr 20, 2013 said:

Hi ajayre

I checked the stl and also uploaded the original Inventor design file. The holes should be 32mm apart and 4mm of the outer edges. This is indeed the case in the stl and fits my 40mm revoltec fan just fine. Maybe you have a problem with your x-y-step calibration. Let me know what caused your problem, once you are sure.

hlx_mr on Apr 20, 2013 said:

Hi ajayre

I checked the stl and also uploaded the original Inventor design file. The centers of the holes should be 32 mm apart and 4 mm from the outer edges, which is the case in the stl. This fits my revoltec 40mm fan just fine. Maybe you have a problem with the x-y-step calibation. Let me know what caused the problem, once you worked it out.

Greetings hlx_mr

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