In article ,
John T. Howard wrote:
[snip]

Any comments appreciated.
Ya sure about that now? G
These shoes are too tight.
The weather is too hot.
I'm out of Demerara sugar, how's a man supposed to drink his tea without
it?

Okay.. enough of those comments.

Melamine. Use butt-joints and 2-1/2" long low-root chip-board screws.
Pre-drill with 1/8" bradpoint (other drill bits like to skid around)
Put in about 5 of those per joint (on a 23-1/2" deep cabinet).
Stop the box from racking by sliding into a groove a 1/8 or 1/4 thick
hardboard back. Put that groove about 5/8 away from the back. but on the
sides only. Make the top and bottom the depth of where the groove starts.
Screw two cleats to hold the back in place.
If you want a schematic, you know to lose the BULL from my addy.