| Year | 2020 |
| Date | 25-Sep |
| Volume | 225 |
| Issue | 4,648 |
| Page | 456 |
| Category | Workshop |
| Part | |
| Title | Making Hexagonal Sockets Simplified |
| Author | Norman Barber |
| Notes | Needed to make a hexagon socket for his new design of blowdown valve and describes the simple method he devised. Original Martin Evans design, modified blowdown valve design, component details, procedure |