Velly interesting; First if cut on table saw the FACE MUST BE UP, otherwise you will have what ever chip out on the face. Second what tilt is your saw?At least that eliminates the thin edge from slipping under fence.only way i can think of on table saw, VERY GOOD magnetic finger boards, in front of blade tight to fence, make a L shaped jig hold in place with more magnetic fingers right after blade to keep tight to fence till board clears the fence. Board Buddies on top of board before and after blade, if you have more than one pair i would use buddies the entire length of the fence. I wood consider 2 cuts per angle, a rough cut leave maybe a heavy 1/8 then a finish cut. if you have more than one pc then just run em all at first setup then run all on finish cut. Same for both angles/sides. ONLY use a very sharp RIP blade, i wood suggest buy a NEW Freud Red blade either box store, I know depot has them only about 25 dollars.IF you have a good saw with 2 or 3 hp then get full thickness blade 1/8 not thin, thin will deflect, but two cuts balances it out more for the thin.
Also do NOT let the customer select material, go with them and YOU select which ones to work with