Pi3-2015

5/2/2015

Introducing the Idea of the Pi3-2015
the aim is to get a superior printing quality and an increased printing volume starting from the already good Prusa i3 3D Printer.

In the render below we decided to use railway from IGUS instead of the common shaft and linear bearing.
This solution should prevent the wobble artifact and increase the movement precision.
Furthermore there will be no need of lubrication and an incredibly smooth and silent moves while printing

The printing volume also will be increased using this solution as all the stroke of the railway can be used, actually calculated is around 220 mm using a short bowden or a direct drive installed on the X carriage.
Rather 50 mm more that the actual max Z dimension.

Discussion is open, let us know what you think about!!

8 Comments

christophe

5/3/2015 04:59:57 pm

Hi Fabrizio

Very good idea
Puraps Trapezoidal srews for Z axis ?

When it is dispo

3DLabteK

5/3/2015 05:37:33 pm

Would be a great Idea, to use trapezoidal screw, even if we the linear rail from IGUS we expect to cancel the wobble problem due to the normal M5 threaded rods.
Actually this is a development stage and we are collecting suggestions and ideas for improvements.

George

5/8/2015 11:30:15 am

Hi Fabrizio
Nice and clean design as always.
....or to use 8mm threaded rods for Z axis which is more straight and more durable to distortion during the rotation than the 5mm.

Fabrizio

5/8/2015 07:37:49 pm

Thanks for you Comment George,
We always think that simple means ...easy to use.
Regarding the threaded rod, the M8 rod are one of the option we are evaluating,
Furthermore today it is possible to find Z motor with the M8 screw already on shaft and brass nuts.

Patrick B. link

5/8/2015 04:50:07 pm

Hi Fabrizio. Sounds great. A +1 for the trapezoidal screw here. Hope you will also introduce upgrade kits for PI3 owners who already own your (reinforced) frame set. Also: will it fit your metal enclosure?

Fabrizio

5/8/2015 07:31:34 pm

Actually let say that trapezoidal screw are interesting a lot of people.
As they are straight by default and the pitch allow fast Z moves with higher precision than the normal threaded bar.
For the Enclosure there is no problem as the printer will be more compact than before, especially on the X an Z axis.

3D LabteK

5/8/2015 07:40:19 pm

Which Extruder type to mount on the X carriage?
Bowden type or direct extruder.
Short or long distance hot End?

christophe

5/9/2015 04:47:31 am

Hi

For me direct extruder, 200x200x180
Z axis with trapezoidal + Smooth rod 8
X Axis linear guid
Y Axis linear guid + Trapezoidal

Pi3-2015

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