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40mm Ducted Fan Shroud

by Kidlatj, published

40mm Ducted Fan Shroud by Kidlatj Feb 5, 2012

Description

40mm fan ducted shroud for the prusa mendel with Lm8uu's and a J-head extruder. this has a flap inside that can adjust the amount of air to the hotend. It snaps in place between the LM8UU brackets but some additional doublesided tape or whatever might also be desired. the hotend duct lines up with the vents on the J-head mk4 extruder while the other duct shoots down evenly around the extruder (missing the nozzle) onto the freshly placed plastic. This is great for sagless bridging and sharper corners on your prints.

Update: Adjustable Damper added (see section view) also created a version that mounts to the Slim x-carriage at thingiverse.com/thing:16208

Update 2: Added a larger diameter vent version that will fit the Prusa V2 carriage and larger sized extruders. I also included the source Revit file.

Recent Comments

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Anybody have one like this for the Prusa i3? This would work great for the Magma hot end.

Having lots of problem exporting from Revit.

How do you do it?

STL Exporter changes size and most important makes STLs files that never works, as it tries to start ptinting not at Zero Z level...

I'll try wih your family RFA.

Same problem here, looks ok when I look at the stl. Slic3ing it fails for the top half or so.

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Instructions

there is a smallish tab that can optionally come off that is needed to help bridge the gap on the inside fan opening. There is some crazy bridging going on so I suggest using a fan. This is my first upload here, this part was created in Revit and 3ds Max and for some reason Skeinforge complains about it a little bit but it still prints just fine.

Update: The added internal damper can use a short section of 3mm filament as the hinge pin or substituted with a nut/bolt.

Comments

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wesner0019 on Jan 27, 2014 said:

Anybody have one like this for the Prusa i3? This would work great for the Magma hot end.

JAMh on Sep 18, 2013 said:

Having lots of problem exporting from Revit.

How do you do it?

STL Exporter changes size and most important makes STLs files that never works, as it tries to start ptinting not at Zero Z level...

I'll try wih your family RFA.

Whistler94 on Mar 19, 2013 said:

Anyone else having problems slicing this with slic3r? it comes out all messed up! i can even import it to an STLl viewer and have it come up looking right. Any help?

hyperparallel on Mar 28, 2013 said:

Same problem here, looks ok when I look at the stl. Slic3ing it fails for the top half or so.

rawrer on Mar 20, 2013 said:

Slic3d ok for me. When I open up the file in solidworks its a bit weird tho. The part is half solid, half surfaces but its still the correct shape.

cobra18t on Jun 30, 2012 said:

Any possibility of slimming the slim version down by 3mm? I am using Jonas Kuehling's reinforced version of the slim carriage, meaning there is 3mm less space between bearing clamps. I am unfamiliar with Revit. Is it free?

Pacca on Aug 29, 2012 said:

this would be very useful!

CodeCreations on Mar 17, 2012 said:

It looks great -- I just need to work on my print quality a bit more. lol

It looks like this was made for the original V2 X carriage, but there's a newer V2 carriage on github that has only three LM8UU brackets with no snap fit. Do you have any plans to update for that x carriage?

The_Moo on Apr 5, 2012 said:

Same problem... But as Kidlatj has posted the source it should be no problem. The new carriage has 6 holes for mountig the extruder, it shoud be possible to use 2 or all 4 of the unused holes to mount the fan there. Just have to redraw the fan shroud that these holes become accessible... Unfortunately I have no time at the moment to do that. Maybe someone else?

metzench on Feb 9, 2012 said:

Would you mind to post your design file? Need a somewhat bigger hole around the noozle....

Kidlatj on Feb 9, 2012 said:

I went ahead and created one with a larger diameter for you. I also included the source file in case you have any experience using Revit...

shadowmite on Feb 8, 2012 said:

Skeinforge seems to have some weirdness in mine and skips a few lines on the top for some reason. Not sure why, but remember to check your layers BEFORE printing unlike me!

Justblair on Feb 5, 2012 said:

Looks like a really well designed part. I am having trouble visualising how it attaches to the x-carriage, any pictures of it fitted?

Kidlatj on Feb 5, 2012 said:

just added a new pic, it fits between the two LM8UU brackets along the x axis. I will have some more pics as soon as i get it mounted.

shadowmite on Feb 5, 2012 said:

SWEET, printing next...

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