Arrow Cut off saw
thingiverse
I built the saw because it was too expensive to buy one. You'll need a 12-volt DC motor with 6000 RPM and a 12/3 amp PSU. The motor I used is a 31ZY, which you can find on eBay: https://www.ebay.com/itm/31ZY-DC-12V-6500rpm-Magnetic-Tubular-Motor-High-Torque-Brushed-Motor/172311967490?hash=item281e97f702:g:I0IAAOSwHwZaDwu1. I added the motor dimensions to make installation easier. All measurements are in millimeters. In addition, you'll need a panel-mounted plug: http://dk.farnell.com/switchcraft/712a/dc-power-jack-2-5mm-12vdc-5a-solder/dp/1608729?st=5%205mm%20connector and a power supply with a fast connector: https://www.avxperten.dk/stroemforsyning-med-fast-stik/12v-stroemforsyning-fast-stik-3-amp.asp.
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