The Shop > Tools
Anybody build Dan Gelbart angled laser centre finder?
DavidA:
Norman mentioned 'Centre cam'.
I remember that article, and did download Trethaway's software.
Did anyone here actually build one?
Dave.
BaronJ:
Hi Guys,
I just found this on the HMSC web site.
There is a PDF article on there but the interesting bit starts at page 5. I just grabbed an image of the wanted pages.
awemawson:
I like the simplicity of using centrifugal force to operate the switch - very neat :clap:
Arbalist:
It's an innovative slant on the concept but I'm concerned about the safety aspect of one Laser, let alone two working at the same time. I'm also worried that two circles may prove to be distracting rather than helpful. Nice to see folks trying something different though.
PekkaNF:
I have worked around and installed low power laser sensors and safety curtains/photocells. This power level is considered fairly safe. Generally laser beam is actually pretty thick and mW level laser has pretty low power density.
This design I would consider pretty safe, there is no good reason to stare into the beam. Reflection from the part is possible, but due to spinning "dwell time" is pretty low and these power levels are most likely don't cause damage on stray exposure.
That said, I consider my sight very important and I would very much use lowest power level that works.
Probably whole lot more damaging to our eyes is welding and UV exposure from leds/displays/TVs and stuff.
Pekka
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