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XRobots / openDogV3

MIT License
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STL files and print instructions #4

Open ghent360 opened 2 years ago

ghent360 commented 2 years ago

Thank you for publishing the CAD files as open source.

Would it be possible to extract the STL files for the 3d printer parts and provide some guidance as how to best print those parts? For example the part orientation, print settings like (number of perimeter walls, infill percentage, support material?)

For parts that need to be printed multiple times, I would recommend adding a suffix xN (where N is the number of times the part needs to be printed). Also if you want to provide some guidance to the part color you can name parts should be printed in "alternate" color with a prefix.

(I would not take credit for this naming scheme, it is used by the Voron printer project and it works well there)

danielwdunn commented 2 years ago

Hello, I'm looking for the same information/guidance. Did you happen to print this already or export the STLs from the step files?

XRobots commented 2 years ago

Tolerances will vary from printer to printer, and if you were to CNC the cycloidal discs etc instead of printing them - I've published solid models to you can tweak them. I'm not going to strip out all the STLs I'm afraid. It's not much extra work to import the STEP into some CAD software and export the STLs, this whole build is fairly involved...

danielwdunn commented 2 years ago

I completely understand. I'm more wondering what materials would be acceptable (PLA, ABS, PETG?) and what infill percentage is needed.

I'll contribute the STLs and corresponding color coding like @ghent360 suggested to this project once I've done that work.

XRobots commented 2 years ago

It's designed to all be printed in PLA, but you could use tougher materials and skinny some of it down. I used 4 perimeters for everything at 0.3mm layer height with a 0.5mm nozzle. Infill was down to 10-15% for the big parts and 20-30% for the small parts like the cycloidal discs/small motor components etc.

ghent360 commented 2 years ago

First I want to say thank you to James for sharing this excellent project. It seems a lot of though went into it and I really appreciate the chance to be able to replicate your work.

I agree exporting the STLs seems like a tedious task. The trick is not to 3d print the models of the bearings, but one learns.

@XRobots for the internals of the transmission parts should one use the file called 'openDog V3_internals_toleranced' ?

danielwdunn commented 2 years ago

Truly an incredible and impressive OpenSource project. I'm hoping to put together a full build guide for openDog v3 (if one doesn't exist yet). And I will include the information provided here and any I learn along the way.

XRobots commented 2 years ago

First I want to say thank you to James for sharing this excellent project. It seems a lot of though went into it and I really appreciate the chance to be able to replicate your work.

I agree exporting the STLs seems like a tedious task. The trick is not to 3d print the models of the bearings, but one learns.

@XRobots for the internals of the transmission parts should one use the file called 'openDog V3_internals_toleranced' ?

That is another set of parts I toleranced for my printer.