• Assuming the "shelf" above the cupboard doors is the only weight-bearing surface, you could rout a groove into the back panel if you were concerned.

    All options mentioned above are good. I guess it comes down to whether you value speed, simplicity of construction, cost or strength.

  • Oh yeah, good shout, I should do that.

    @airhead, flat-pack-ability is probably a big bonus tbh as I'd like to market the design if it's a success, I'll go that route. I've only got access to a 2-axis CNC so will have to do the 'endgrain' holes by hand, but will create a jig to make that faster and more accurate.

About