This is a basic dual pantograph jack with around 40mm Z travel. It uses 1/4" threaded rod for both the main screw, which drives against two captured hex nuts, and for the through-hole connections between scissors. It also uses 8-32 bolts with lock washers for the scissor pivots, and M3 bolts and hex nuts for the clamps. See pictures for more details.
| Dual_pantograph_bar_crank_end.stl | 1.2MB | |
| Dual_pantograph_bar_middle.stl | 1.3MB | |
| Dual_pantograph_crank_coupling.stl | 516.9KB | |
| Dual_pantograph_jack_small_parts.stl | 15.8MB | |
| Dual_pantograph_lab_jack.scad | 37.8KB | |
| Dual_pantograph_lab_jack_assembled.stl | 15.1MB | |
| Dual_pantograph_plate.stl | 1.7MB | |
| Dual_pantograph_scissor.stl | 153.2KB | |
| Dual_pantograph_shaft_collar.stl | 378.0KB | |
| Dual_pantograph_thread_cap.stl | 3.7MB | |
| Dual_pantograph_thread_end.stl | 4.5MB |
![Specimens With Gauge Length Five Times The Diameter [E8M] 3D Printer Model](https://cdn.3axis.co/assets/ae/bc/cf/35/aebccf35-03cd-4da1-992f-62420a3495a2/images/75f1d63f-1551-4a64-a171-fb8c6ea0e55e_thumb.jpg)
