I've just completed a short analysis of the historical influences on the design of sash windows. Its the kind of background that helps shape some of the detail decisions I've had to make.
If you're interested to see where I'm coming from have a look here.
Feel free to leave me comments, knowing folks are interested helps me focus.
And, if you're up to speed with all this tinterweb stuff, the more who are keen, the more pressure on me to get cracking.
or share it from the web page
or share it from the web page
Cheers, Andy