White styrene Angles. Stronger than wood, easier to bond than metal and does not require sealing or priming for painting.
Evergreen Scale Models Styrene Plastic Strip Tubes Angles Rods Scratch Building
Knightwing UN1 Industrial Pipes Various Sizes Plus Bends / Angles etc OO Gauge
30PCS Styrene ABS Angles L-shaped Architectual 50cm for Model Layout ABS05
Plastruct Channel Section - Various sizes to choose
Plastruct 90621 (STFS-4P) Square 3.2mm 7pc
Plastruct 90850 (MR-10P) Rod 0.3mm 10pc