Welcome!
I designed my first dust boot about 1 1/2 years ago after downloading a 'standard' dust boot STL file from Thingiverse for my new CNC machine at that time, a Shapeoko 3 CNC machine. The dust boot worked ok, but it attached by clamping to the router cylinder, and changing bits was a pain the the butt. Every time I used a different length bit, I had to break out the screwdriver to loosen the clamp, adjust the height of the dust boot, and tighten it again. Anyway, that initial effort, and subsequent designs brought me here today, where I'm proud to offer my latest creations to other CNC user such as myself. Please take a look, and let me know what you think. Thanks!