The other 2x72" belt grinder I made four years back has been the most used tool in my workshop ever since. So I decided to make a bigger one that can run belts up to 160" and features swappable arms for different wheels and attachments. The only parts I bought new for this build are the 12" contact wheel, pedal switch and concrete, all steel found at the scrap yard. Of course I also order custom sized belts (50x3500) in variuos grits, the 320grit one you see at the end I glued myself with ca and cloth and ended up breaking within the first 5min of use.

Design loosely inspired by "Bader Space Saver" grinder I have seen used by Matt and Ilya over @That Works . What looks like a great belt grinder that is still being sold here: http://www.stephenbader.com/pr....oduct/bader-space-sa

Some of the parts for this grinder were made in other videos:
Tracking wheel: https://youtu.be/qGkaqqu_Peg
Knobs: https://youtu.be/xhm7q69HTPo
Aluminum bars: https://youtu.be/mfoFLx67tWk
Motor and drive wheel: https://youtu.be/ikbrk3J99WU

00:00 Base And Main Frame
03:11 Tensioning Arm
09:37 Tilt Adjustment
11:37 Tracking Mechanism
17:18 Contact Wheel Arm
20:53 Motor / Drive Wheel
22:11 Tests

Some of the videos about tools I use:
Big drill press: https://youtu.be/Cpu4Idp7dNI
Magnetic vise for big drill press: https://youtu.be/e_ua18J8NOg
Small drill press: https://youtu.be/BZmqVw7MJsg
Regular Drill Vise: https://youtu.be/XQrcOYuYyOs
Buffer: https://youtu.be/8V9f0DIkb90

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Suggestions and comments are welcome.
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