DIY Laser levelling using webcam and laser level

[John McNamara]

Hi All

Sorry I have not been around much we are moving house.

Below is a a few quick screen grabs of a concept design of a device to create a flat surface directly on the support tubes of a CNC router.

Apart from the long tubes the device is approx 270mm square.
I plan to reduce it down once I sort out how big the sensors need to be. The laser cutting will be cheap its all 5mm Plate.

Note the X and Y 12mm ball pairs used to level the platform, allowing it to rock X and Y.
In practice the pocket corners will be formed by Lightly pressing them in together in a vice, They will be very accurate.
Not shown will be some springs to keep them pressed against each other.

The drives for the X and Y rock will be at the bottom of the tube if a plumb bob is used.
Huge leverage so small steppers only will be needed nothing fancy just a threaded rod there will be little travel needed.

Again just a few of 5mm laser cut plates to mount them.

Do you know of a cheap IC chip that could be used instead of the plumb bob? I know they exist but where?
The wire alignment microscope as per Joe's design will be mounted on the vertical carriage.

I am not planning to use ball screws for the X and Z (Remember the Y is A belt), just the threaded rod drives used in 3 D printers. Quite cheap.

There will be a single wheel only carriage that rides on the opposite rail for stability
I have not shown the drive for the carriage itself It can be a timing belt Better or just a cable drum.
I have shown Ali Barba Bearings.

What do you think?
Regards J