Cut a scaffolding board into shelf lengths (these were for the recess next to a chimney breast). Sand, stain, and varnish the shelves then three holes in each 12mm in diameter and 100mm deep.
Cut the board across the holes 50mm in. This is the piece that will bolt to the walls using a concrete anchor:
So, drill two more holes parallel to the previous ones in each of the 50mm deep wall mounting boards. Use a 25mm wood bit to make a pocket for the anchor head to recess into.
In the larger pieces drill the now 50mm deep holes down until they are at least 100mm deep. Cut six 12.5mm diameter by 150mm long dowels and fit them into the wall mount. Bolt the assembled mounts to the wall where you want the shelves.
Slide the big piece over its corresponding mounting piece. Use a piece of scrap wood as a baffle to hammer against until the two pieces of shelf meet again.
Put shit on the shelves.
Endless British Pub Crawl (Part 3) 