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Improved case for GM328A transistor tester (USB-C version) 3D Printer File Image 1
Improved case for GM328A transistor tester (USB-C version) 3D Printer File Thumbnail 1

Improved case for GM328A transistor tester (USB-C version)

jk_printer avatarjk_printer

April 20, 2026

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Description

A remix of the remix with improved lettering and optional model type and warning labels. The lettering in the remix this is based on was slightly too small to print well using a 0.4 mm nozzle. This redesign uses larger letters and a different, more print-friendly font. There are two additonal variations of the top plate available, one with an embossed model name and one with the model name and a warning label ("Discharge Caps Before Testing!").

The original case offers a good fit. I would have liked to add some wider chamfers and to make some walls a bit thicker, but editing STLs is kind of a pain and this works well enough :)

Print settings

  • Layer height 0.2 mm

  • Line width 0.4 mm

  • 4 wall lines

  • 4-5 top & bottom layers

  • Supports enabled (build plate only)

Approximate print time @ 60 mm/s: Top 1:35 h each, Bottom 0:55 h

License:

Creative Commons — Attribution — Share Alike

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