DIY Laser levelling using webcam and laser level

[devmonkey]

PS Joe is that really a swimming pool in Pommieland?! I hope it's got solar heating. Even in Perth we only used ours for a few months around Christmas.

Yeh I was sceptical too but the kids and missus were rather insistent ! I used ICF for the walls helps a lot with heat loss, and it uses a 39KW air sourced heat pump which has a COB of about 10-15, you put in 3kw of electricity get out 30kw of heat, that together with global warming lets us keep it at 28 degrees from May-Sept, it has ice on it today though. Biggest electrical expense is the water pump, going to convert this to DC and run it directly off a couple of solar panels next season. Hardest part of making it was wiring together 3km (I kid you not) of rebar before pumping the concrete, I had bloody hands doing that for a fortnight.

Getting a bit off topic but anyone interested in getting a swimming pool, build it your self as I did. It cost less than a decent CNC router, £1k for rebar, £5k concrete, £1k ICF and then £3k for some locally licensed rip off merchant to fit the liner. Local pool company came round to have a look when it was finished and told me they would have charged me £80k for building it.