| Year | 2017 |
| Date | 26-May |
| Volume | 218 |
| Issue | 4,561 |
| Page | 786 |
| Category | Stationary Engine |
| Part | 2 |
| Title | Puffie |
| Author | Wolfgang Tepper |
| Notes | Makes a tiny 'executive toy' that requires some precision machining. Piston and piston rod, body, oscillator bearing, reversing valve housing |