4" and 4.5" Hole Router Templates
thingiverse
I required precise 4" openings for speakers and 4.5" holes for 120mm fans as part of my virtual pinball cabinet project: http://lilmikey.com/2017/02/16/virtual-pinball-cabinet/. These templates proved significantly more cost-effective than a hole cutting jig, provided you have a template bit at your disposal. Print Settings: Printer: FT-5 Rafts: No Supports: No Notes: Simple to print in any material
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