pen plotter 3d model

Here is the complete, comprehensive technical specification sheet and design documentation for scaling the CNC Pen Plotter with an Automatic Tool Changer (ATC) to a massive **$2000\text{ mm} \times 2000\text{ mm}$** ($2\text{ m} \times 2\text{ m}$) footprint. Since the original design was meant for a small desktop area ($360\text{ mm} \times 280\text{ mm}$), scaling it up to $2\text{ meters}$ introduces heavy mechanical flex and load challenges. The specifications below include the critical structural upgrades (like industrial linear rails, dual-drive motors, and gantry truss reinforcements) required to make a machine of this scale actually work smoothly. --- ## 1. Overall System Specifications * **Overall Frame Footprint ($L \times W \times H$):** $\approx 2250\text{ mm} \times 2150\text{ mm} \times 250\text{ mm}$ (Extra space accounts for motor mounts, tensioners, and corner brackets). * **Effective Drawing/Plotting Area:** $2000\text{ mm} \times 2000\text{ mm}$ ($2\text{ m} \tim