A simple "chuff off" is too terse then?
ive got one now at moment wants the economy of the rocket stove but dosnt like the price when getting the materials
wants you to design it all up in drawings for them with sizes and all the materials needed all priced up in costs
its too dear I will get a friend to build it instead
he was told good luck he can learn how the stove works and how to build it himself with no sizes as i had them
so showed him the downdraft stove same thing those things are expensive can make your own up if you understand them and there flows
had it again with the comment i want it to work properly from the start