hot head info .....demo set up question

[sarah t]

i have been asked to do some demos and i am putting the kit together (if anyone has any going onto bulk or demo kit they want rid of give me a shout  )

any hoo the question is ......

can anyone with either a hot head or an exsisting demo set up give me an idea of the clearence needed between the torch and the screen ( or the length of the hot head flame ) so i can estimate the size of table i need ...thanks 

[jammie]

Can I re ask this question please? And also anyone know what size tubing diameter I need for with a hot head, I have seen 4.5mm and 6mm? Thanks for an help