Dovetails, dovetails and more dovetails. The drawers are almost finished. I cracked my favorite .5inch chisel handle while cutting these. I will be heading to Kansas City in a few weeks, gives me a reason to stop at Woodcraft and buy a new one huh. The bottom drawer slides are made of Red oak. I bought a pre made one to use as a template. The pre made cost eight dollars. I figure I got about a buck and half to two bucks in mine. A good coat of wax and they slide real smooth.