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PSU Replacing Frame Brace for Original Prusa i3 MK3, turn three quarter

PSU Replacing Frame Brace for Original Prusa i3 MK3

Your printer, running the way it should.

30k downloads in the maker community

$41.77

Color: Gray

Printed in the USA when you order.

  • Made in the USA, printed when you order
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  • Maintains frame rigidity when PSU is removed or relocated outside enclosure
  • Drop-in replacement designed for Original Prusa i3 MK3 models
  • Prints reliably in rigid materials like PLA—no flexible filaments needed
  • Ideal for custom enclosure builds and modified printer setups

This PSU replacing frame brace is a structural reinforcement part for the Original Prusa i3 MK3. When you remove the power supply unit from the printer frame—whether to relocate it outside an enclosure or for custom modifications—this brace fills that space and keeps your frame rigid and stable during operation.

The part is straightforward to print and install. Simply print it from a rigid material such as PLA, and use it as a direct replacement to maintain frame integrity. See the installation guide video for reference.

Not affiliated with, endorsed by, or sponsored by Prusa. Prusa and its product names are trademarks of their respective owners.

Will it fit? Check the numbers.

Size
110 × 188 × 51 mmabout the size of a water bottle
Material
PLA, solid color
Made
In the USA, printed when you order
Works with
Prusa

Sizes come from the real model file, not a guess.

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$41.77

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