no, he's cut it in the horizontal to stop the legs flexing when you're planing (for example) which exerts horizontal forces along the top of the bench. the dado (properly called a groove in the UK) is for sturdiness, not to support the cross member. the screws are more than enough to keep it from dropping off(!)
no, he's cut it in the horizontal to stop the legs flexing when you're planing (for example) which exerts horizontal forces along the top of the bench. the dado (properly called a groove in the UK) is for sturdiness, not to support the cross member. the screws are more than enough to keep it from dropping off(!)