Cut a giant washer from thickish but flexible plastic (look for inspiration in the binder dept of a stationery shop) Pop it up through the hole and glue it down with gripfill.
Nowadays you can get modified silicones that are paintable eg: http://www.toolstation.com/shop/p52048
Yes, chat to your local marina, car security shop or caravan showroom if you want to run them off 12-24VDC. Otherwise, most of the ones I've seen have a relay output.
http://www.discountedheating.co.uk/shop/acatalog/Rinnai_Water_Heaters.html>> At near enough 800 quid for water only? But pours out the hot water for ever and no cylinder taking up space. Excellent quality, made In Japan.
This will save you a bomb at the hire shop. Rick
I gave away a perfectly good (and at the time of purchase very expensive) cassette deck to the local charity shop a few weeks ago. Sorry.
Man at B&Q put finger to keyboard: "I once bought 'Shop Local' toilet paper. Never again - I looked like someone in fingerless gloves eating Nutella out of the jar." - Jeremy Hardy.
The old style flipover saws are still a favourite with shop fitters I notice. I have the Elu TGS and I think the de Walt equivalent is still produced. Just about portable
Try any good agricultural suppliers/farm shop.. I believe its known as a bird scarer!-) See also a fairly recent very long thread about problems with 'yoofs' from URG Jim
A knife is OK for marking pins from tails, but it's hard to get into the corner for tails from pins.