Thank you Demmoc 
Slow going still, work life is really taking it out of me at the moment, am also renovating the house at the same time but am getting this thing done slowly
I managed to get a head liner in my helmet finally, I had an old bike helmet; one with an adjustable screw at the back so the whole thing sit nicely now.
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I also have a dozen of these fans, I got them from a boot sale at 20p each! I will point on to take heat and air out on one side and point the other to push air in? no idea if thats the best way to go about it but the idea sounds good to me 
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The jet pack its self is almost ready for a miss coat of paint, I ordered some wooden spheres from E-bay so I could get on with it and get it done, but its been a week and what arrived was a small pack of pipe cleaners??? :confused that is of no use to me for this project that's for sure :rolleyes
I am having trouble finishing the rocket tip, I have made great effort with the cardboard build to have no raised edges, bumps, glue marks etc and I am just not happy with my attempts at the rocket tip, I feel that such a part on the outfit stands out so much it will become a focus when in the public eye and would hate to be let down by such an eye sore.... I will just wait until the right part finds me I think, I am in no rush I have until March to showcase it at a local Con
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there is a few parts that are not 100% correct but I hope to have that fixed soon...