Use these hole saw guides to easily enlarge an already drilled hole. Made these to aid with enlarging holes for new pot lights in my basement so I created a full set.
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PETG recommended, I did print one in PLA at 15% and the threads lasted for 8 holes but still worked.
Naming Format
Hole_Saw_DiameterxHeightxArbor_Size
The author marked this model as their own original creation.