- Protection from the beam in normal operation
- Protection from the beam if the machine is lifted off the surface
- Interlocks on any covers that open horizontally placed relative to the laser.
My current approach is to use a light shield under the diode head made of filter material. The body of the machine may be made from clear acrylic. I do not think the body needs to use filtered materials when combined with the head-shield.
Caution: I have not tested this concept. It seems logical that the placement of the shield [close to the surface] would make a dangerous reflection unlikely. Also, this approach
is being used by others that I judge to know what they are doing.
JTech is one of the best sources I have found on Laser Diode safety, engraving, cutting, and technique.
- Practical FL
- Practical DOF
The shield may also serve as the focal adjuster.
To further make this safe I also plan to have the means to turn off the laser if the machine is lifted off the surface. You could also accomplish this with a full enclosure but I am trying to make MoBeam capable of laying on top of various thicknesses of materials, mostly wood. Therefore the bottom of mine will be open.
Comments are always welcome.
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