The original was an awesome idea but I found that mine liked to crack at the upper inside angle.
I replaced the 90 degree angle with a curve to help disperse the stress and reduce the risk of cracking. It was an added benefit that the diameter of the curve fit my monitor perfect.
If you're worried about this falling off of your monitor, try a 3M strip. It works great.
Rafts: Doesn't Matter
Supports: No
Infill: 75% or higher
The author remixed this model. Imported from Thingiverse.
I replaced the 90 degree angle with a curve to help disperse the stress and reduce the risk of cracking.