Wow! How industrious! Yes, this is what I was thinking of. They are a little thick, but the implementation is very nice! Thanks for making it easier to explain what I was looking or; I think you understood rather well. :) Nice pictures, too. Have you tried them out? Andrew On Wed, January 30, 2013 12:35 am, karl shah-jenner wrote: > I just made 2 and put some pics up, one is wood and one aluminium.. > > > would this work ? http://members.iinet.net.au/~shahjen/filt.html > > >