Fingers crossed it'll cut ally

[blackburn mark]

I do like the look of your vacuum thingy. Where do you get the valves?

nice one jonathan, i was starting to think i was on my own with this one

they are fish tank check valves 10 for £3 ... bargain ebay :)
i havnt tested these ones yet but they do the same job as the one iv already got
(fingers crossed they will hold a vacuum without collapsing the diaphragm) ill let you know.
get the transparent ones, they may indicaite to some exstent the state of the vacuum
let me know if you want a syringe ill send you one across