I'm building a base unit from 37 x 63mm framing timber. It's got to fit in the corner between the end of the sink unit on one wall and the chimney breast on the other. The sink unit has a granite top and is too heavy for me to move. Plus it's plumbed in.
It won't drop onto the hole once built because there's a wall cupboard in the alcove, and the grant top hangs over the end of the sink unit a couple of cm.
The only solution I can think of is to use 90 degree brackets on the inside angle of the joints rather than screws on the outside surfaces.
Photo attached.
Thanks if you've got a genius solution a novice can do.