Quantity   Component name
1 × 3000mm x 620mm x 27mm beech worktop For which I paid £109 on eBay in June 2020.
2 × 30mm x 30mm x 2.5mm mild steel box section, 3m length.
1 × 30mm x 30mm x 2.5mm mild steel box section, 1.5m length.
1 × 30mm x 3mm mild steel flat bar, 1.5m length