The break in the weather allowed me to get outside and waterproof the base of the shed. 4 tubes of butyl rubber sealant later and the job was done. I then got around to fixing it properly to the concrete base I made before Christmas and started to drill the 10mm holes. 4 dead drill bits and just one 30mm hole later I gave up. Even upgrading to a heavy duty drill bit has not worked, I gave up when the drill itself started to smoke a little.
I can only think it must be the drill? It is a corded hammer drill but from a budget range I admit. On one hand I am happy it is obviously a solid base, but I also need to fit a bracket to lock the new bike to when I get it. The base was made with scalpings and I can only imagine that I have hit a stone and that is what is causing the issues.
I have thought about hiring one of these for the day:
http://www.hss.com/g/2321/Heavy-Duty-Hammer-Driller.htmlAny thoughts?