prusa mk3 and mk2 x axes length

Hi all,

i have an old prussa i3 rework that i would like to upgrade to prussa mk3 from original printed part. that prussa clone as a mk2 original prusa fram like.
For Z and Y axes i found working solution, but for X axe i just need real length or exact dimensions beetween the 2 printed part for adust it (For now, if i use the mk3 ref, it use 370 mm for the rods but it seam to me that's a 8 or 9 mm to long for me).

||||printed part left ||||||<------------------------------>|||||printed part right |||||||

I need accuracy for this lentght for setup this axe as Z axes depend about it to.



Any one have original prussa ?

Thank's for your help.

Quote
https://toms3d.org/2017/02/23/building-cheapest-possible-prusa-i3-mk2/ Tom3D Dolly
8mm smooth rods, 320m, 330 or 350mm, 370mm | X, Y Z linear guide | 2 each size

Quote
http://manual.prusa3d.com/Guide/3.+X-axis+assembly/105?lang=en#s1574 MK2 x-axis
8mm smooth rods (the longest ones)

Quote
http://manual.prusa3d.com/Guide/3.+X-axis+assembly/508?lang=en#s8159 MK3 x-axis
Take remaining smooth rods and compare their length. For X-axis you need longest rods (370 mm).

I think it's 370mm.

Edited 2 time(s). Last edit at 04/09/2018 09:55AM by Rossos.

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Proud owner and maker of build from scratch FDM 3D printer [forums.reprap.org]

thank's Rosso for your answer, but i soon have this rods length. In my case the mk3 frame lentgh between the 2 z motors is changed from, mk2 frame version (the one i have)...so the mk3 original rods length don't work.
I need to find the good one withe mk3 X axes print part on mk2 frame... that's the problème .

I don't really understand what you are looking for.
Maybe some photos would help clear my confusion.
The X-axis in Mk2,Mk2s, Mk3 is all 370mm rods.

As for the printed parts (stls and scads), they are freely available at prusa's github.
You can download the scad files and modify them for your own case.

Printed parts for Mk2: [github.com]
Printed parts for Mk2.5: [github.com]
Printed parts for Mk2S: [github.com]
Printed parts for Mk3: [github.com]

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Proud owner and maker of build from scratch FDM 3D printer [forums.reprap.org]

thank's for the links.

i have a Prusa i3 frame and i have 370mm rods with the new mk3 printed X part. With that, the X structure is 8 or 9mm longer than it should. So I must adapt the rods for find the good position. The rods in Mk3 X printed part is verry tight, so it's difficult to find the good position.
this is an picture from what I'm looking to find for the dimension. with that I can reduce the 370 mm to accurate dimension for my case.

if I can't I'll start to modify the scad files.

Fbm

304mm but had to eyeball it as extruder is in the way and Im not taking it apart (mk2)

Edited 1 time(s). Last edit at 04/10/2018 06:44AM by Dust.

Great !!

Many thank's Dust. I'll try that.