E3Dv6 Shroud and 40 mm Duct Magnetic Coupler Remix

by ant0ny, published

E3Dv6 Shroud and 40 mm Duct Magnetic Coupler Remix by ant0ny Jan 28, 2017
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Remix of E3Dv6 Shroud and 40 mm Duct w/ Magnetic Coupler for 6x3mm Magnets

Well maybe a rethink rather than a remix.

After some tightness and adjusting the sizes of the original files I soon discovered that you needed the holes to be tight but not too tight for the magnets and after a few iteration and glues I thought I had it and one magnet pulled out... so decided to rethink the idea and make it "user friendly".

Magnets slot in from the rear now and I just used a little hot glue to make sure they didn't come out.

I designed a low profile 40 to30mm fan duct.


Ok after some concerns over my idea of having about 1mm of separation between the magnets I had a little look... I just put 2 5x2mm magnets in each hole instead of one and it is pretty secure now... i thought before it was nicely held but this is now pretty sturdy.

I am not sure of or if there are any problems with doubling up magnets... I have ordered some 5x5mm N52 magnets which are the most powerful... see how that holds.


5x2 magnets x4 (x8 if you double them up)

m3 x 8mm caphead bolts x2 (you can use 4)

2x 40mm fans

8x 2mm zip ties

Note: This is only for a Genuine E3Dv6 hotend

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Wilson II







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Hello, nice work!
But remember that you give a way a lot of the magnets power by setting them in distant positions.
I've never had a problem with magnets getting loose, not here nor when I glued them into my RC models, when I think that they are to strong to seperate them securely, I give them a little gap, maybe by setting them a little deeper ar by adding some tape over one of them, but the gap is never more than the thickness of one piece of reinforced tape or even two pieces of standard tape at all.
The risk of getting one magnet loose while seperating is only if they have full direct contact, the smallest gap between them will prevent that.

Comments deleted.

Yeah I tried it and so far they seem to work just fine being separated and I'm using 5mm magnets as well. The gap is 1mm.

My other option was to get the magnets with the countersunk holes and screw them in. There is a 7x4mm but am sure I saw a 6x3mm.

thanks Antony

Hi Antony,
imo 1mm is too much loss of power, anything that prevents a direct contact should work fine, a small piece of tape or even smear a little hotglue over one face and the hotglue or CA you used to glue them in will hold them in place.