Fingers crossed it'll cut ally

[blackburn mark]

I suggested cling film to mask off the unused holes

nice one ill give it a try, should work well with small holes, i was thinking latex but i guess over time you would build up a collection of anything that works
blu-tack might be an option for slighly larger holes, i think anything over 4 or 5mm would need a more sturdy plug

and best of all, QUIET!

high on my list, my router is running inside the house (thank god im not trying to cut wood)

[Jonathan]

blu-tack might be an option for slighly larger holes, i think anything over 4 or 5mm would need a more sturdy plug

Rubber test tube bung?

I got the syringes yesterday - thank you Bigger than I expected - I'm impressed at the pressure (or lack of pressure!) that they can hold. I'll do some experimenting over the next few days...

[blackburn mark]

yo jonathan, remember to put that one way valve as close to the tip of the syringe as you can, a mind like yours will work out why if you think about it, its not so important with the fish tank valves (almost zero resistance) iv had one of them fail so far, the one you have should be very robust
iv added the exsaust valve to my setup, makes life really easy :)
let us know if you have any eureka moments :)