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4 in 1 Access panel key / Manhole key / Square key — image 1
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4 in 1 Access panel key / Manhole key / Square key

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5-8 size square key ONLY works for light force operations

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Model information

Category
Tools
License
Creative Commons — Public Domain

Fancy square key for ceiling access panels and any square key. You can remove the blue (8mm) sleeve to get a 5mm key.  The key is honestly a bit weak. It only works for low torque operations

Print the main body 5 walls thick, PETG, NO SUPPORTS. The model already has supports built in (highlighted in green).

The colour shapes are printed in a SPECIAL tower. Select 2 height changes to set your colours so you don't waste filament. These also provide strength to prevent cracking. 

Superglue the 6mm and 7mm but leave the 8mm unglued so you can remove it and get a 5mm key