So I finally had the time and all the parts to build my own 2X72 inch belt grinder!
It's based on the same motor unit (from a treadmill) from the previous video, the DIY Disc Sander ( • DIY Disc Sander Attach... ). I used Plywood since its what I can process in my small work shop, and was readily available.
please let me know what you think!
I considered adding the construction plans, they need some work since things change as you progress through the build. If you want them let me know in the comments and I will update and upload them.
List of Tools and Materials:
Motor unit: link to video ( • DIY Disc Sander Attach... )
Birch plywood 30cm*120cm ($10)
Half inch pipe 30cm * 4 units ($8)
Half inch pipe connectors * 8 units ($12)
Half inch PTFE electrical tube (found - $1 or so)
Treadmill motor (found - $20 for whole treadmill at thrift shops...)
10k watt led driver from amazon ($15)
AC DC bridge rectifier (1000v) ($3)
total of $48 for the motor unit. (was a bit less since I had some of the stuff laying around)
Belt Sander Attachment:
Materials:
Birch plywood 30cm*120cm * 4 ($40)
3/4 inch or (m20 in my case) threaded rod 1m * 2 ($18)
3/4 inch or (m20 in my case) 20 * nuts, 30 * washer, 5 * locknut ($25)
M12/1.75 * 130m machine screw * 5, washers * 12, locknut * 5 ($12)
Cargo wheels 50mm W*80mmD with 20mm inner D bearings * 3 ($30)
Aluminum from scrap yard, by weight, ($8)
350*80*18 (platen), 330*110*18 (work bed), 45*50*110 (bed support)
door hinge ($2)
50mm*50mm L bracket * 3 ($6)
Assorted wood screws ($5)
Spring from old trampoline (~$1)
40mm * 40mm * 800 steel L profile (found ~$3)
wood glue
thread locker
Tools:
Jigsaw
- long wood blades * 2
Cutoff wheel (angle grinder)
- cut off discs *3
- 60 grit flap disc *1
Power drill (died in the process - RIP wolfie )
*with old drill press attachment
Cordless screwdriver
bench buffer with 60*6 buff wheel and medium (green) paste
assorted drill bits and drivers
wood turning chisel (wide V shape)
M8, M6, M5 drill tap bits ($6 set from amazon all broke after 5/6 taps)
Allen wrenches
various wrenches
80, 120, 450 grit sand paper
mechanics square
calipers
measuring tape
wood and metal files
steel bar clamps
Let me know in the comments if I missed something, or you have questions!
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