Three questions of a new (happy) user regarding the i3 MK2
 
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Three questions of a new (happy) user regarding the i3 MK2  

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Max
 Max
(@max)
New Member
Three questions of a new (happy) user regarding the i3 MK2

Hi,

last weekend I assembled my new Prusa i3 MK2 3D pinter and already printed some stuff. The quality is amazing! I really like it. I previously had a Shapeoko 2 but the assembly was messy and it was loud, dusty and could not make 3D parts. So my congratulations to everybody who helped engineering the printer.

But I've three questions:

1.) During assembly I broke (more or less) the small heatbed contact cap at the back (black 3D printed part) because the nylon strip didn't fit. Is the STL file available so that I can reprint the part?

2.) The attached picture shows the bottom of a printed object. The top comes out very smooth. But the bottom is very rough. How can I make also the bottom smooth?

3.) I would like to attach a a pen to the extruder stepper to use my i3 MK2 temporarily as a plotter (to label some CDs nicely). I looked a little bit and tried using the Pronterface but I didn't get started. Has anybody any ideas how I can get this working?

Cheers!

Postato : 07/10/2016 1:49 pm
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: Three questions of a new (happy) user regarding the i3 MK2

Hi Max

STL files are here: https://github.com/prusa3d/Orignal-Prusa-i3/tree/master/Printed-Parts/stl

It would appear from the photo that the Live Z Adjust is not set low enough, hence the bottom finish

As far as the pen is concerned, you would need to generate your own GCode (control code) probably via some third party software/

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…

Postato : 07/10/2016 3:31 pm
Max
 Max
(@max)
New Member
Topic starter answered:
Re: Three questions of a new (happy) user regarding the i3 MK2

Hi Peter,

STL files are here: https://github.com/prusa3d/Orignal-Prusa-i3/tree/master/Printed-Parts/stl
... but not the file for the heat bed cover (see here) ... 😥


It would appear from the photo that the Live Z Adjust is not set low enough, hence the bottom finish

I really should lower the print head more? I think I'm at -0.850mm for Live Z Adjust right now. The manual calls for -0.640mm and I guessed that my value is therefore "high enough".

Cheers!

Postato : 07/10/2016 5:02 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
Re: Three questions of a new (happy) user regarding the i3 MK2

Hi Max. There is an stl on the forum for a modified heat bed [*][*]cover. Which comes out at right angles. Making the front to back length shorter[*]
Regards Joan.

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Postato : 07/10/2016 5:26 pm
ayourk
(@ayourk)
Reputable Member
Re: Three questions of a new (happy) user regarding the i3 MK2

Hi Peter,

STL files are here: https://github.com/prusa3d/Orignal-Prusa-i3/tree/master/Printed-Parts/stl
... but not the file for the heat bed cover (see here) ... 😥


It would appear from the photo that the Live Z Adjust is not set low enough, hence the bottom finish

I really should lower the print head more? I think I'm at -0.850mm for Live Z Adjust right now. The manual calls for -0.640mm and I guessed that my value is therefore "high enough".

Cheers!

In my opinion, if you are having to go more than -0.200mm for Live Adjust Z, you should adjust your Pinda probe higher. See this video for the best way to do this. You probably only have to adjust the nut a one or two notches on the top nut. If you adjust the probe too high, Calibrate XYZ will fail.

Dimensions PNG

and an 8 inch (200mm) or greater caliper is recommended.

Postato : 07/10/2016 6:59 pm
Max
 Max
(@max)
New Member
Topic starter answered:
Re: Three questions of a new (happy) user regarding the i3 MK2

Hi,


In my opinion, if you are having to go more than -0.200mm for Live Adjust Z, you should adjust your Pinda probe higher. See this video for the best way to do this. You probably only have to adjust the nut a one or two notches on the top nut. If you adjust the probe too high, Calibrate XYZ will fail.

okay. I'll adjust the PINDA probe higher and recalibrate everything. Gets Live Adjust Z automatically reset during calibration so that it don't touches the head bed when I raise the probe?

But then it should work fine, right?

Regards!

Postato : 07/10/2016 8:02 pm
frank.s
(@frank-s)
Active Member
Re: Three questions of a new (happy) user regarding the i3 MK2

Hi Max

please raise Z via live adjust a little before you change the probe.
There is not automatic reset 😉

It is a good Idea not to have the hot end not touching the bed. Just to have the PEI sheet surviving longer 😉

All the Best
Frank

Postato : 07/10/2016 8:12 pm
ayourk
(@ayourk)
Reputable Member
Re: Three questions of a new (happy) user regarding the i3 MK2

Hi Max

please raise Z via live adjust a little before you change the probe.
There is not automatic reset 😉

It is a good Idea not to have the hot end not touching the bed. Just to have the PEI sheet surviving longer 😉

All the Best
Frank

If you are using firmware version 3.0.8, the Live Adjust Z value is automatically reset.

Dimensions PNG

and an 8 inch (200mm) or greater caliper is recommended.

Postato : 07/10/2016 10:38 pm
PJR
 PJR
(@pjr)
Antient Member Moderator
Re: Three questions of a new (happy) user regarding the i3 MK2

If you are using firmware version 3.0.8, the Live Adjust Z value is automatically reset.

Only when doing an XYZ or Z calibration, not when running V2Calibration GCode.

Peter

Please note: I do not have any affiliation with Prusa Research. Any advices given are offered in good faith. It is your responsibility to ensure that by following my advice you do not suffer or cause injury, damage…

Postato : 07/10/2016 11:03 pm
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