Ingenious magnetic corner clamps hold pieces firmly at a 90 degree angle! Great for structure kits!
excellent idea. Did you make these or purchase them
I purchased them on eBay. There is a guy in Istanbul, Turkey who is designing and manufacturing a bunch of high quality and innovative model tools. These are just one of his products. A group of us our here in Washington State got together and bought a number of his items and he did not even charge us for shipping. He was very friendly to deal with and reads and writes great English.
As of today April 2, 2012, this is an active listing on eBay for these clamps.
Reynaulds European trains is now carrying some of his stuff as "Proses" accessories and tools