I am desperately searching for a loop end clock spring 96"long x 1/2" wide x 0.018" in order to build a completely wooden clock. USA seems to be the only place to find them
Think metric! According to my calculator, that's 2438mm long, 12.7mm wide and 0.46mm in thickness, just like this one: http://www.medmaw.com/cgi-bin/medmaw/medmaw.cgi?keywords=2012+462415&mall_name=muk&search_request_button=Go!&store=parts&page=./html/change_store.html
The closest they can come to what you want is part #CP-M1200L: 2400mmx12.99mmx0.45mm. Cost is $15.80CAN (8.85GBP); shipping methods and cost to be offered at check-out. Hope this helps.
He's probably out scouring the Black Forest searching for suitable material for his clock:) Actually, making wooden clocks is a hobby for quite a few people.