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Ramified Armchair - Bending Plywood
Building a Toboggan
you could take the stock collar ring into the hardware store and try out various Bolts to see which fits. once you find that, you could buy one and use it to cut threads in your material (cut a slot down the side across the threads with a file, then slowly thread it in, back it out, advance, back out, until your threads are cut). You can find YouTube videos on thread cutting, but as far as your thread size i think that's your best bet - just take it right to the hardware section and see what works.
Mini Metal Lathe
Making and using a hand crank lathe for use with a plasma cutter
Physical Graffiti. What do I win? :D
Physical Graphitti - what do I win?
Convertible Standing/Sitting Desk for $200
Sliding Moxon Vise
DIY Woodworking Cam Clamps & Plans!
Wooden arbor - simple DIY project
Porch-Swing Fire Pit
Shop made bench vice
Cherry and walnut sculpted bench
kitchen roller cart
Headboard from Wooden Pallets
Wine rack for a bottle and 2 cups out of pallet
End Table with Glass Mosaic Tile Inlaid Top
Pallet wood Coffee Table
KITCHEN ISLAND / WINE RACK
Hamster Wheel Standing Desk
Anniversary Jewelry Box
Bass Clef Cutting Board
Make a real Viking Stool
Bow-style bread knife
Pallet Coffin For Halloween
Menace to the Pumpkin Patch
Fine particulate collector on the cheap (I Made this at Techshop)
Antiqued Media Stand from one sheet of plywood
Make A Guitar Pickup