
http://www.timbecon.com.au/productsearc ... hBox=wc-11
I'm getting 8 of the 400 mm ones. About the best price I've ever seen on them. I had thought about making my own, but after all the futzing about to make a clamp, these look like a really good deal.
They've got fret saws on sale as well.
http://www.timbecon.com.au/productsearc ... ox=cl-3001