You can build unusual and useful wood bikes without welding.
I think wood bikes should become poplar again. :-)
This is a simple one speed wooden bike with coaster brake, fits everyone from little kids to TALL adults. There are no metal tubes in the frame.
Wooden' you build with wood if you couldn' weld? I wood.
It's got a 4" Razor scooter front wheel, so it's only safe on smooth roads without potholes or bumps.
Bike is designed so there is not much weight on front wheel. Bigger riders have center of gravity closer to back wheel.
Other bikes I've built
Videos (includes bike) from Maker Faire
Step 1: Start Design on the CAD system
My CAD system sometimes has a Gooey interface if I spill something on it while designing:-)
More seriously, like other CAD systems it has a GUI (Graspable User interface).
Make a cardboard cutout of your lower leg (with foot and pedal), thigh, torso, and straight arm (to a distance 2" back from your wrist). Use it to look for good riding position and clearances for knees to bars, heels to wheels etc. Use the CAD system to layout the riding position, cranks, wheels etc with attention for locating your hands, shoulder, seatback angle, butt, knees and feet.
For detailed instruction on 12 Steps to designing a sweet handling recumbent, visit Bikesmith Design
This bike is designed for the rider to have a vertical back and no seat back and no weight on the hands.