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Prusa i3 MK3 extrusion

Posted by Dust

Dust

Prusa i3 MK3 extrusion
September 23, 2017 11:13PM

Registered: 9 years ago
Posts: 5,299

I notice that the extrusion used in the Prusa i3 MK3 has 4 screw points at each corners vs the 1 central screw most extrusion has

Anyone seen any extrusion like that out in the wild?

Or are they doing something else? tapping into the diagonal internal ali... may be possible, seems unlikely

In case you have been living under a rock and haven see it. [youtu.be]

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o_lampe

Re: Prusa i3 MK3 extrusion
September 24, 2017 02:53AM

Registered: 4 years ago
Posts: 5,232

I intensly watched the video until I almost got an epileptic attac winking smiley

but I still can't figure out what you mean?!

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Dust

Re: Prusa i3 MK3 extrusion
September 24, 2017 03:25AM

Registered: 9 years ago
Posts: 5,299

The end of a typical 2020 tslot, looks like

One central hole that is often used for attaching things. (not a good idea.. but that's another story)

The MK3 is clearly using 4 screws at the ends...

4screws.png

how? I presume there is a profile with 4 holes....

Yea I know, I never ask easy questions tongue sticking out smiley

Edited 2 time(s). Last edit at 09/24/2017 06:20AM by Dust.

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Dust

Re: Prusa i3 MK3 extrusion
September 24, 2017 06:19AM

Registered: 9 years ago
Posts: 5,299

or maybe its just 3030 not 2020, and they tap those square holes...

HTB1vgk8HpXXXXc5XXXXq6xXFXXXs.jpg

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MechaBits

Re: Prusa i3 MK3 extrusion
September 24, 2017 12:21PM

Registered: 4 years ago
Posts: 1,499

Or it's just CAD gone MAD, is there a real product pic?
Seems a waste to have the profile there/split it and not really use it.
A step further and ditch the plate and use more extrusion.

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banana_muffin

Re: Prusa i3 MK3 extrusion
September 26, 2017 10:54AM

Registered: 2 years ago
Posts: 4

Quote
Dust
or maybe its just 3030 not 2020, and they tap those square holes...

HTB1vgk8HpXXXXc5XXXXq6xXFXXXs.jpg

Maybe a combo

[8020.net]

[www.avdel-global.com]

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tolar250

Re: Prusa i3 MK3 extrusion
September 28, 2017 12:56PM

Registered: 4 years ago
Posts: 35

Misumi 30x30 extrusion has 4.2mm holes in the corners

[us.misumi-ec.com]

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Dust

Re: Prusa i3 MK3 extrusion
September 29, 2017 02:50AM

Registered: 9 years ago
Posts: 5,299

ah Misumi, the company that wont sell to individuals unless your an American... So sadly useless! but nice to know.

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MatthewHall

Re: Prusa i3 MK3 extrusion
October 03, 2017 07:42AM

Registered: 4 years ago
Posts: 120

Quote
Dust
ah Misumi, the company that wont sell to individuals unless your an American... So sadly useless! but nice to know.

But if you are in America Misumi is the greatest thing to ever happen to anyone ever. Literally can order extrusions of any size, color, slot, etc. and cut down to half a millimeter.

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rolloo

Re: Prusa i3 MK3 extrusion
October 03, 2017 01:41PM

Registered: 3 years ago
Posts: 12

C01-1.jpg

www.zappautomation.co.uk

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Dust

Re: Prusa i3 MK3 extrusion
October 03, 2017 08:42PM

Registered: 9 years ago
Posts: 5,299

40x40, but an interesting profile

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MechaBits

Re: Prusa i3 MK3 extrusion
October 04, 2017 08:28AM

Registered: 4 years ago
Posts: 1,499

I just ordered some 3030 from new seller on ebay(same profile as the misumi), cheap, but will have to see if it arrives, just 2 short 200mm pieces for £8 [www.ebay.co.uk]

And the only one doing black [www.ebay.co.uk]#