Tell us about yourself!
I got mine from https://clamptitetools.com/ 10 + years ago it is the greatest and way easier to buy than to make if you don't have the setup!
Camera was Cannon power shot SX130is
I did it slightly differently, $1 for glasses and scotch tape. some cutting and Done.
Very nicely done. Have you seen the Speed square holder on the marketnow? It looks cool I did a search for it on google.
I have some old planes and you've made want to go back at them and check for anything to improve them. Great Job! IMHO