Just for your amusement I thought I might show a picture of the new spring back I have made for one of my Speed Graphics. I bought the SG as a source of parts and then ended up deciding to use it. The graflok back was missing when I bought it, so amongst the other modifications I had to come up with a new back. After much brainstorming I came up with something that cost me under $10 and works just fine. It is made from four mousetraps, hence the thread title.
I'll try attaching a picture, but if that doesn't work the full story is at: