Improved the security of the MTB shed today. Previously the door could be forced open. Now it will take much more determination to get to the cheap bikes inside.
I used the distributor shaft from a Morris Minor (0.49" diameter), which I drilled to accept a padlock, then fitted from behind the door, through the bottom of it.
Made a 6mm aluminium striker plate with a 0.5" hole drilled through it to accept the dizzy shaft, and a couple of countersunk holes for screwing the plate to the bottom of the door. The rear edge of the hole for the padlock, is in line with the front edge of the plate, when the door is fully closed. Fitting the padlock takes all the free movement out of the door.