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Replicator 2 Fan Duct replacement

by MakeALot, published

Replicator 2 Fan Duct replacement by MakeALot Feb 2, 2013

Description

Yesterday, my fan duct broke off during a print and spent some time in the company of the hot end before I could recover it.

I then had to attach it with tape.

I thought I'd better model a new one before this fell off again and was no longer usable.

I'm afraid my model may not be as accurate as I would like in the melted area as I never studied it prior to the hug with the head, so I don't know what it should look like.

Recent Comments

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Yes mine almost got killed when it hit a cold blob. I think I better print this one before it happens again. The blob was a Makerbot defect in the nozzle. They replaced the nozzle assembly but what about the damage the blob did? Free fan duct maybe?

The insulator seems to be thicker and is pushing the duct down. The replacement duct from the fan output is exactly the same dimension as the original. I am going to thin up the top and it should allow the duct to rise the 2mm that I need. Let you know what happens.

That's a shame, I guess that the combination of tolerances between the extruder tip and the fan mount are such that I have more room between the heater block and the tip than you do. I assume that you have pushed the fan duct up as high as it will go before tightening the screws? It can touch the Kapton tape as there is a ceramic insulator between it and the heated element. My extruder tip is approx 2 mm lower than the bottom edge of the duct, yours looks to be about 1 mm above. You need some clearance as the duct will knock things off the build platform it it's too low.

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Instructions

If the same happens to you, loosen and remove the old one and slot in this replacement in from below.

I've included the model for anyone with Alibre Design that wants to play/improve.

Comments

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DeadCatDot on Apr 10, 2013 said:

Yes mine almost got killed when it hit a cold blob. I think I better print this one before it happens again. The blob was a Makerbot defect in the nozzle. They replaced the nozzle assembly but what about the damage the blob did? Free fan duct maybe?

MarkTecWizard on Apr 6, 2013 said:

Made one and when I mounted it, the fan duct was below the extruder nozzle and I could not level the build plate. See the I made one picture

MakeALot on Apr 6, 2013 said:

That's a shame, I guess that the combination of tolerances between the extruder tip and the fan mount are such that I have more room between the heater block and the tip than you do. I assume that you have pushed the fan duct up as high as it will go before tightening the screws? It can touch the Kapton tape as there is a ceramic insulator between it and the heated element. My extruder tip is approx 2 mm lower than the bottom edge of the duct, yours looks to be about 1 mm above. You need some clearance as the duct will knock things off the build platform it it's too low.

northstarprojects on Mar 16, 2013 said:

Any chance you could post the model in Solidworks, Parasolid, STEP, or ProE format?

gamerguy51 on Mar 11, 2013 said:

i ripped that thing off....its not in the documentation. thought it was a manufacturing leftover, since it was dangling down when received.

MakeALot on Mar 11, 2013 said:

It will make a big difference to your PLA prints, this one is even better: www.thingiverse.com/thing:5142...

MiguelAlvarez on Feb 17, 2013 said:

I ordered a replicator 2X and it doesnt have active cooling like the replicator 2 does for PLA so I thought why not just print the active cooling rig and I found this! Now I just have to find the fan lol

michaelladt on Feb 21, 2013 said:

Hey Miggles, I am a Replicator 2 owner, I have a few questions about the 2X, would you mind if I hit you up? Really curious about a couple of things.

Thanks!

MakeALot on Feb 17, 2013 said:

I have made a better one, I'll post it soon.

This looks about the right size fan, be better checking with MBI for a part number though http://cy.rsdelivers.com/produ...

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