Prusa i3 MK3 SolidWorks Assembly (with STEP)

by jzkmath Dec 8, 2017
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I can't open the file by solid works 2016.
The version is different!
How can I open the file??...
I think this files are good...

Its made in SolidWorks 2017. I think that the Parasolid is backwards compatible as I used that in development to share with a user who had SolidWorks 2014. I would go for the .x_b file and see how that imports.
Still odd that you can't open in SolidWorks 2016; last time i checked it should open but not be editable.

Hi jzkmath,
A big thank you for your work on converting MK3 STL files to STEP.
But do you have any plans to convert the new MK3S details to STEP as well?

This is the first I've heard of the mk3s. If there is a need, I would be more than happy to convert the files to step.

I actually might not need to do too much with the MK3S, as I just checked the GitHub, and it already has the files converted to STEP. I hope that someone at Prusa used my method of converting the parts over, which would be awesome.
Regardless, I will still be making the SolidWorks Assembly for the MK3S

In the file I first found there were no STEP files. But I found them on the Github that you mentioned. Thanks for the help.

I just read the post right after you mentioned the MK3S. I will say that you made my day, because I have a MMU2 so apparently that means I get a free upgrade, which is awesome. (It was also great that the MMU2S addresses the two main issues that I ever really have with my MMU2)
Regardless, I will definitely be converting the files to STEP for both the MK3S and MMU2S. I just hope the SCAD files aren't too much of a pain to convert, like how the Einsey enclosure was.
It will likely be posted as a new thing, and it might be a while before I have time to do the conversion (like about a week at most)

This looks great! Any chance you could save it in a version that older copies of SolidWorks can open? 2010 specifically if that matters.

Unfortunately I don't know how to do that. I don't think it's possible to back convert SolidWorks files. I've tried to see if was possible and apparently it isn't. That's why I posted the parasolid binary and step file.

Ah, alright. Thanks anyway.

I converted the new Einsy-base R3 version over. There were some issues in the conversion, so this process was pretty involved. I was going to submit a PR for this over on your Github site, but I'm not sure what folder to put the STEP file in. If you can let me know, I can submit the PR.

Send me a PM, and I will add it to the GitHub and other databases!

Any chance that you have done the new mod 45 degree fan nozzle?

I know that the new parts are being posted as STEP because OpenSCAD can't handle the geometry of the new extruder design. I have installed the parts on my machine, and will post a new SolidWorks assembly once the step files become available by Prusa Research.

I have also fitted the new parts. They work better but the centre part needs to be blocked to duct the air in from the sides. It needs a better directed nozzle as the rear of the prints is not being cooled

Just added the new SolidWorks Assembly as well as converted the fan SCAD files to STEP!

Possible to update to the latest .step files please?

Just added the few files that weren't added. the Updated ones, have an R2 on them, but I did that months ago.

It would be great if you could convert this assembly into an Fusion 360 assembly. Since F360 is free for makers and home use (and SW isn't).

I've tried importing those assemblies in F360 but I'm getting only partiall assemblies (don't know why).

You might want to make sure that when you import the SolidWorks assembly into fusion 360, that you select "Prusa i3 MK3.sldasm" as the top level assembly.
I checked and the way I uploaded the assembly is how Autodesk recommends exporting for fusion.

You could also try the parasolid binary file (.x_b) and see if that works

Just triedd the .x_b file and it worked like a charm. Thank you for all your hard work on this and for this tip.

EDIT: And I just found out why the sldasm import failed. Actually it didn't but some parts were hidden (facepalm). It's better to import that than the .x_b (the assembly works better). Sorry for all the trouble, but this is what you get after using a CAD for 5min only :)

That's good to hear that you got it working! Don't worry, it wasn't any trouble at all!

"You might want to make sure that when you import the SolidWorks assembly into fusion 360, that you select "Prusa i3 MK3.sldasm" as the top level assembly.
I checked and the way I uploaded the assembly is how Autodesk recommends exporting for fusion."

Did just that for all the MK3 assemblies uploaded here and none imports the whole model (eg. missing extrusions, aluminium parts, extruder).

"You could also try the parasolid binary file (.x_b) and see if that works"

Haven't tried that yet - I'll try it tomorrow (but I don't remeber F360 giving me an option to choose that as I drag and dropped all files from each zip/directory for it to upload)

This is great! Thanks for all the hard work!

Hey. Thank you for the time you put into this assembly. I downloaded the original version and now the R2 step assemblies. I used it to design my y axis belt tensioner (https://www.thingiverse.com/thing:2786671)
Successfully without even having the printer in front of me. I had zero issues once the parts were printed and installed on the actual printer due to the accuracy of the model.

Prusa I3 MK3 Y axis Adjustable Belt Tensioner

This is awesome! Thanks for doing the work and also showing us how you did it. Very cool.

Update: Be sure to follow these FreeCAD instructions for enabling the OpenSCAD workspace
then restart FreeCAD

I'm glad you appreciate it!
Also thanks for the tip!

I would be greatful if you could export it to an assembled stl file and upload it here.

I added an STL of the Assembly

Thank you very much.

Thanks! I'm designing an enclosure for the MK3 in SolidWorks, so this will save me a bunch of time assembling it myself.

I'm glad you like it! (I actually created the SolidWorks model for the same reason!)

Did you end up making an enclosure? I'm surprised there aren't any enclosures on the market. Between dust, dog hair, wanting nice ABS prints, and toddlers, I can not have a printer without an enclosure.

Yes I did, but it doesn't have many of the features that a proper enclosure needs. It's really more of a shelf that holds my printer and filament in my college dorm room.

Gracias, no se usar mucho los STEPS pero lo voy a intentar

Hola, tendras los ficheros originales que quiero ajustarlos a mi impresoras

What do you mean by original files? All of the files were pulled from the Prusa GitHub, and I converted it to STEP and SolidWorks format afterwards.

Thanks Man, this is great!

Thanks a lot for doing this, it helps tremendously.
I'm designing something that will attached to the frame and I noticed that the frame is 4.25mm in your design.
My Mk2 frame is 6.25mm. Does the Mk3 have a different frame thickness?

I think that might be a little mistake on my part. I wasn't sure the thickness for either the frame or the two plates. I think that its correct for these plates, but not the Frame. I will fix that.

Good, happy I helped and thanks again!

Just Fixed them, replaced them with V2 files.