One good Internet DIY is better than the shop manuals, except for the torque specs (IMHO).
Those boys used a router to replace a whole wood shop.
https://www.leevalley.com/en-ca/shop/garden/garden-care/hoes/110392-lee-valley-dutch-hoe?item=PK240
Pop into the local DIY shop as run by Ronny Barker and ask for some O's. ;-)
If the work is outside, not disturbing the shop its not his problem.
http://www.discountedheating.co.uk/shop/acatalog/Bristan_Design_Utility_Lever_Deck_Sink_Mixer_Tap_-_Chrome_Plated.html Scratching is what she does with a pen these days.:-(
http://woodgears.ca/shop-tricks/skillsaw_dado.html (don't look harry, your head will implode)
I'm tempted by http://zwave-products.co.uk/shop/article_206/danfoss and http://razberry.z-wave.me/, but no experience.
http://www.toolstation.com/shop/Adhesives%20&%20Sealants/Sanitary%20Sealants/Forever%20White%20Sanitary%20Sealant%20310ml/d180/sd3202/p63890
What about buying a watch with an alarm from a pound shop and just cannibalising it.