Reply by Sylvain

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Posted on Laser winding stick?

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872 posts in 2983 days

#1 posted 10-24-2018 05:11 PM

Shipwright, sorry, it seems I did not completely understood.
You system might work in theory, but I see some practical difficulties.
E.g. :
You might need one person operating the laser and another one looking at the other end of the board.
How to move the laser just at the surface of the board and parallel to the reference end of it?

With a first winding stick incorporating the laser line device laid at one end and a second stick laid at the other end, you could see the result without further manipulation.
And for those of us who could not focus on the end of the board, it is possible to make a few steps to have a look at the line on the second stick. (One must go and laid the second stick anyway).
As the light ray is above the surface, it would work even if the board is slightly bowed.
It would also work with a rough sawn board if one just planed the two extremities for twist testing before further planing.
Simple and easy to use, even with a not perfect vision.
It seems easy and cheap to build: a hole in the middle of one of the winding stick to insert the device, with a screw to prevent unwanted rotation, a (recycled) support for two AAA batteries and a little switch.
Of couse one would first need to calibrate the system e.g. with two level surfaces (one for each stick.)

-- Sylvain, Brussels, Belgium, Europe - The more I learn, the more there is to learn

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