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)