Based on a model from another website, I simplified it for printing. My version is slightly wider, but it has retractable arms for fine-tuning the angle. I used a 0.8-millimeter nozzle and a 0.4-millimeter layer height for printing.

I used three M3x10 screws, but if the holes printed out are too large, M4 screws should also work.

I will print the retractable arm separately, so you can adjust its size based on its sliding performance.

There is a hole on the fixed arm for tightening the screw, but I don't need it.

I think it's quite easy to assemble, but if you need any help, please let me know.