That's good going John.
I know I could really do with a QCTP so am tempted to have a go at one, however, I know I don't really have the material for that, so short of going and buying some, I am thinking some sort of engine. But the only other engines I want to make at the moment are:
Flame Gulper
Simple I.C. Engine
Hit & Miss Compressed Air Engine
Hit & Miss I.C. Engine
Beam Engine
I think the only one that is anywhere near achievable in the time for me is the Flame Gulper.
By Monday I need to have made the decision and collected materials together. Quite excited but

Nick