Sorry Guy's I never got this far down the forum, I was side tracked by another member
Joe told me on the other forum.
I never intended to build and sell them, I don't like making money out of people who are more than capable of building there own.
I did however do an Instuction manual with photo's for anyone who wanted to build there own, you can have the manual for £50
Only Joking if anyone wants the Instruction manual then give me your email address and I'll forward it to you.
Thank you for giving me a kick Joe
I forgot to mention that I have noticed a certain supplier has now taken my idea and built an easy accessible switch into a new backpack, Just going to do a search and check it out