Ha ha, I've never cut mitre sides on the table saw. At the time I made these I was using my home made table saw so the blade angle was not adjustable.
I'm making small boxes so the sides are only 3-4mm thick and between 25mm and 40 mm wide, I don't know how they would work out on the table saw. Now I have a "proper" table saw I may need to give it a go.
Phill