Yep, you've got it right about my "upside down" reference... I wasn't suggesting moving to Aussieland.
Never considered the implications of dark material. I've always stuck to 3mm or 6mm MDF single pass cut.... though at times if presentation is a factor, I'll cut the 3mm on the 6mm setting so I get the same shade of "burn" on the kerf. If I need thicker, I just laminate with layers of 3mm and 6mm using laser cut holes for dowel alignment.
Masonite may be worth a try if for no other reason than probably less glue that in MDF.
The thing I like about MDF is that it seals the edges giving a strong crisp surface.
SplinterGroup ..... Maybe a better analogy for you would be Festool compared to Bosch?, Leica compare to Clack? 🤠
C'mon Splinter, Leica is not all that bad... though I'll hold my disclaimer for Bos¢h!
If your first cut is too short... Take the second cut from the longer end... LBD