Office Chair Bike

Step 3 Clamp or strap tubes together for welding

During and after filing the donor tube's mitered end, the joint is assembled and checked for correct angle, centeredness (meditation could help here) and plumbness (allignment by eyeball). When it all looks straightish, it is clamped or straped together to be tack welded.

Tack welds are small to avoid melting too much of the nylon strap.