Hahaha. To be perfectly clear, I first saw the term "sledgehammer" on Jason Baum's website after meeting him at US Nationals last year. I knew of this sequence of odd turns as the somewhat ambiguous phrase "triggering the front", and I only ever used it for very basic eo control on my last pair (say to avoid a dot oll) or for a fairly fast solution to the beginner's f2l case.

Jason Baum's use of the sledgehammer to deal with one particularly nasty f2l case amazed me. I then saw Lucas Garron's reconstruction of Erik Akkersdijk's 8.9

http://www.youtube.com/watch?v=TRtamR8Vv9s, where I noticed that Erik used the sledgehammer to deal with another terrible f2l case. That got me thinking about other f2l cases that could be dealt with using sledgehammers.

This turned out a wealth of elegant solutions to f2l cases that would have otherwise required one or two regrips, or where just plain nasty. For example, the case where the pair you're working on is in the correct spot, but upside down can be solved by doing a U', right sledgehammer, inverse right trigger (see

http://alg.garron.us/?alg=R-_F_R_F-_R_U-_R-&ini=x2_R_U_R-_F_R-_F-_R). Here's another interesting one:

http://alg.garron.us/?alg=R-_F_R_F-_U_R_U_R-&ini=x2_R_U-_R-_U2_F-_U-_F_U
When I showed David some of these, he started referring to the sledgehammer as the hedgeslammer. We then realized that the term makes sense as the inverse of a sledgehammer. This fits extraordinarily well with the Berkeley emphasis on intuitive f2l (doing everything in terms of triggers, inverse triggers, U, and now sledgehammer/hedgeslammers/hamsledges/slamhedgers). I proposed the terms to everyone after Berkeley Summer 2009, and due to their unbelievably silly sounds, they seem to have stuck.