DIY Laser levelling using webcam and laser level

[m_c]

Sounds like a proper installation!

I can only suggest you pick up a laser and try it, or even just borrow a rotary laser from a local builder or window fitter.

Jazz will need something far more accurate than the cheap rubbish your typical builder will likely have.

My parents neighbour is a highly regarded surveyor, and has many tales to tell about builders and cheap kit. One was a job to do an independent inspection of a private swimming pool, which after being filled with water, had a 4" height difference between ends.
After a bit questioning, it came to light the builder had used a 'precision' laser to do the setting out, as lasers are "accurate" and less hassle than using a basic water level (aka a bit clear hose). Turned out his 'precision' laser was a special from Screwfix that had never been calibrated, but the builder was really pleased with it as it only cost him a couple hundred pound.
As the neighbour highlighted to him, it had just cost him far more than a couple hundred pound, as the whole swimming pool was going to have to be stripped out and redone.

[devmonkey]

Jazz will need something far more accurate than the cheap rubbish your typical builder will likely have.

My parents neighbour is a highly regarded surveyor, and has many tales to tell about builders and cheap kit. One was a job to do an independent inspection of a private swimming pool, which after being filled with water, had a 4" height difference between ends.
After a bit questioning, it came to light the builder had used a 'precision' laser to do the setting out, as lasers are "accurate" and less hassle than using a basic water level (aka a bit clear hose). Turned out his 'precision' laser was a special from Screwfix that had never been calibrated, but the builder was really pleased with it as it only cost him a couple hundred pound.
As the neighbour highlighted to him, it had just cost him far more than a couple hundred pound, as the whole swimming pool was going to have to be stripped out and redone.

LOL, my swimming pool is within 2-3mm when full and I used a cheap dewalt laser when I pumped the concrete for that, your eyeball can tell 4" at the length of the pool. Anyway you are confusing the pendulum laser alignment error with the optical error, quite different things, surveyors only care about the former. Similarly a window fitter, specifically someone who fits bespoke bi-folds will have a laser scanner for scanning the openings as the units are manufactured to fit.



Still would have required some shimming to attach linear rails rather than sandstone ;-)

[JAZZCNC]

Jazz will need something far more accurate than the cheap rubbish your typical builder will likely have.

I agree Moray, my experience of builders laser level hasn't left me blown away either.
If this build happens then I'll look deeper into laser leveling and probably go hire the equipment I need or get one of the guys I now in when setting up the rails.
To be honest the precision doesn't need to be super high because one gantry will be used with Circular saw attached so no great accuracy required at all. The other will be mostly 2D profiling and edge molding using special profile edge tooling and polishing heads. Only making Kitchen countertops so flatness isn't to precision levels and most of the finishing is done by hand. At the moment all of the cutting, shaping, and polishing are done by hand so will be a massive improvement. They just need to save up some penny's or speak nicely to bank manager...Lol