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3D Printable Open Stick Astro (OSASTRO)

3D Printable Open Stick Astro (OSASTRO) 01) 3D Printable Open Stick Astro (OSASTRO) 05)

Attribution

The following text must be included in any distribution of derivatives of this project. All links must also be included.

Based on the Open Stick Modular - Slim (OSM-Slim) by TheTrain.

Copyright © 2025 TheTrain

Licensed under CC BY 4.0

Changes from the original design:

  • list any changes you make here

Anyone selling this commercially must include in the listing that this is an open source item, link to the original repo and include the copyright as well as the link to my X account.

Warnings / Disclaimer:

Please note the following warnings / disclaimer:

  • I am not responsible for prints that fail or do not turn out as intended.
  • I am not responsible for any damage that happens to your printer or parts of your printer as a result of printing these files.
  • If you make and sell these units you are responsible for supporting your own customers.
  • Vertical prints can be challenging and may take multiple prints to get a good one, please factor in the material and cost of this before deciding to do this project
  • Please note that the images are of my unit which is one revision prior to this model. This model increases the distance between the aux buttons by a little bit.
  • You will need a printer that can handle 250mm of vertical printing.

Summary:

The Open Stick Astro (OSASTRO) is a new entry in the growing OS case linup.

The OSASTRO is an open source stick designed as a tribute to the Virtua Stick High Grade and newer Astro Mini stick.

It features 6 face buttons and 4 aux buttons.

The small button holes are 24.05mm.

The aux button holes are also 24.05mm.

This model was designed around a normal Sanwa JLF and the newer OSBMX v2 buttons.

Printing and Construction:

This project is now complete and I have printed and checked the final version of each file. If there are improvements made and those files will be posted when I make them.

Please note that I am not taking on requests for other layouts at this time. The STLs and STEP files have been posted so you can be easily edited in TinkerCAD or Fusion360 (or the program of your choice).

This case was printed on a Bambu Labs X1C and P1S printer with the following changes to settings:

  • 0.20mm layer height
  • 4 outer walls
  • Hex infill
  • 15% infill

Please note that a brim is recommended when printing the main case and it has been added into the included .3MF file.

Based on my prints the entire case takes around 510 grams of filament so you should be able to easily get a case out of a single 1kg roll.

This case was printed using Bambu Labs matte PLA filament, I have not tested it with other filaments.

Each piece should be placed flat down on the print bed to ensure maximum strength except the main frame which should be printed vertically.

The following hardware is needed to assemble the case:

  • 4x M4 35mm brass standoffs
  • 12x M4 14mm countersunk hex bolts
  • 4x M4 flange nuts
  • 2x M3 24mm countersunk hex bolts
  • 2x M3 flange nuts

Assembly:

  • The 35mm brass standoffs will go into the four holes in the side panels
  • The top plate and main frame will bolt into one side of the side panels
  • The bottom plate will bolt into the other side of the side panels

Donations and Support

Donations are welcome and will be used to further refine the files, test additional parts and work on other layouts that interest me.

You can donate here: https://www.paypal.com/donate/?hosted_button_id=2JMTZVCGLDYC2