I am trying to install a cupboard-under-the-stairs, and need to attach a strut to the floor.The floor is laminate wood on (what I believe to be) concrete.I have attempted to drill through with the following drill and drill bits, but I am unable to drill deeper than ~15-20 mm through with just the 3mm drill bit.I'm trying to work out if I'm using the wrong drill (as it is quite a basic home drill), the wrong drill bits, a combination of both, my technique is wrong, or maybe something else is the issue entirely.Drill: 18V consumer cordless drill (in hammer mode)Drill bits 3mm masonry drill bit (Tungsten carbide-tipped) via /r/DIY http://ift.tt/2HZZgpJ
