I build 1/12 scale miniature houses (posh name for dolls houses). So far I have made non-opening windows using 3mm acrylic. Clearly this is not true to scale and I have now located a source for 1mm & 1.5mm acrylic, still not true to scale but much better. I now need designs for openeng window frames both sash and casement types. I can buy the windows on the net from the states but the cost is horrendus when considering a whole new house (anyway I would feel that I was letting the yanks win). Would appreciate any advice as simply scaling a full size window doesn't seem to work. are there any miniature builders out there?--------Billspin