Painting Clamp Base

Based on my own experience of buying painting clamps and forgetting to buy the base; I casually designed a 150*100mm base suitable for a φ2mm aperture.
1, The bottom of the shell has some space for freely adding weight to prevent tipping;

2, The thickness of the lids is 2mm to increase strength;

If anyone needs it, I can also adjust its height and aperture;