Quote:
SteveCallas wrote:
 Yeah, I'm pretty sure lasers that measure distance would be the most accurate and safest way to do something like this. |
I was thinking of something very simple, repeatable, accurate and foolproof.
Like a narrow laser beam lighting something only when it reaches a particular point in space.
(i.e.The center of the dustcap at the desired maximum excursion)
I suppose it doesn't need anything more complicated than pointing the beam at 45 degrees ahead of the dustcap onto a suitable thickness of material. (which is then removed)
When the dustcap travels that distance forwards then the beam will strike the center of the dustcap.
A white sticky paper dot (or a sequin) can mark the center spot to aid observation.
The beam will simply pass beyond the dust cap until the required excursion is reached.
Isolating the laser from mechanical vibration might be a bit of a problem.
There isn't much that stays still in an all wooden structure when an IB really gets going.
Anybody else feeling suitably inventive?
