If I can help you out I will.
Let me have a proper list of the parts you want and your address via PM and I will let you know what I can get in the UK and a cost to ship it over.

Put it in your ear, held your nose and blew hard?

B & Q also sell these which are as good as straight http://www.diy.com/diy/jsp/bq/nav.jsp?action=detail&fh_secondid=9264657&fh_reftheme=promo_161448437%2cseeall%2c%2f%2fcatalog01%2fen_GB%2fcategories%3C{9372015}%2fcategories%3C{9372046}%2fcategories%3C{9372180}&fh_view_size=10&fh_location=%2f%2fcata...

I buy my PVC from FBW in Threemilestone Cornwall. Try them if you like I do get a fair sized discount.
Do you want to reduce from inside a fitting to a pipe? or pipe to pipe or fitting to fitting or thread to thread or a mixture of two of the above?

Ask me and Ill get you a price and ship you one. it will be quicker than last time I promise.

The breach turns, it has a stop built in so it lines up right. At 100PSI Golf balls are lost for ever I have not had a chance to measure distance but the last one cleared a house 600m away and it was still climbing. That was at 80psi.

As soon as I get the pictures of damage I will post them here as well. Thanks for your understanding jrrdw.

Its great, what a novel idea. I was somehow expecting you to build something much bigger or somehow more complex.
I am now fairly sure you are as mad as a brush sir.
I wonder, do you keep it in the cutlery drawer?

What did they say when you phoned a pneumatics supplier?

I wish you would get on with it! I for one cant wait to see the fruit of all this research, it should be an insane launcher.

How about a straw bale or two? Hard as hell and cheap.

Mark thats not true at all. Heat it until it parts then simply rub the old solder down enough to get the fittings back on, reflux and go again.
I dont wish to wet anyone bonfire but I have been soldering for about 25 years.

Good work theBOOM Sorry colty-bear woke up grumpy this morning didnt take age into account at all. Good luck with your build buddy.

But you did a search right?
You tried google and yahoo and a few others right?
You asked at school in shop?

Or you just thought you would let someone else work it out for you again?