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Beam stopper?

brendon7358

Active member
Joined
Jul 2, 2011
Messages
850
Points
43
I use a black graphite tile from Lowes costs like a dollar or less, just use the back side (not the shiny side obviously) was only able to burn it with 7W focused right on it extremely close.
 



MajorLazor

Member
Joined
Jun 5, 2019
Messages
46
Points
8
I got my 200 mW Sanwu pocket in 405 nm today, and I don't think shining it on my wall, or wooden door seems to be an issue (at least not for a few minutes at a time). If I focus the beam a foot or two away from the device, by the time it hits the wall, it's a large enough spot to not really do anything. I used a thermal camera and it only heats up a few degrees compared to the surrounding material.

OTOH, I also have a blue 445 coming soon that's 2W. That might be another story.
 




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