Right on Bob, how thick is your 3/4" meaning if your buying S4S (smooth 4 sides) the material varies23/64-25/64 Thats why so many on here love MDF its a consistent 3/4. If your addiccted to set up blocks then you need rough sawn material and plane to set-up block thickness if you want consistentcy
In our world we spend more time preparing for a cut than cutting its almost anticlimatic. Set up is the evil we all strive to master and what frustrates us all except mark bob and harry sin