Anyone here made their own sash windows? I need to replace 2 large triple sashes, currently single glazed, with double glazed wood sashes. Quotes are all over £9000 for 2 windows. I've read a few blogs and been looking at a lot of posts on some other forums about making sash windows. I have time and the space to do it. Eventually I will need to replace 4x triple sashes and 4x large bays (estimated total cost to have made and installed £50k!). So even a large investment in decent machinery would not be an issue. It may well be the case that I can recover some parts of the existing window frame, but the cills and bottoms of the outer linings are all shot. So for now I am assuming I will be making completely new windows. So looking for advice, tips and hopefully constructive critisism of my plans! Cheers!