DIY L-Shaped Desk: Full Cut List + Free 3D Plans
Welded angle-iron frame, 90in x 30in blockboard top, three-drawer unit. Every measurement, the full cut list, and the SketchUp model free to download.
Metal Drilling
Best Drill Bits for Metal: HSS, Cobalt or Carbide?
HSS for soft metals, cobalt for stainless and hardened steel, carbide-tipped for tool steel and titanium. Full hardness table plus why bits snap.
How to Drill Through Metal With a Hand Drill
Metal is drilled slowly, with weight rather than speed, and with something wet on the cut. Heat takes the temper out of the bit and hardens the hole.