Table is 1-1/2" (3/4" MDF + 3/4" plywood). The 3/4" holes drilled with a Forstner bit go all the way through. The clamps are DDWT MFT style hold down clamps.
Having those and holdfasts are a game changer. Going from building my workbench on some saw horses and plywood with misc clamps to a proper bench with dog holes for bench dogs and holdfasts (with vises too) literally felt like easy mode on my next project lol