GM-20

**LaserGuy216** · 01-12-2009, 21:10

I need one for a shutter, or can someone point me in the right direction to where I can buy something like it, thanks

**Displaser** · 01-13-2009, 04:15

I'll be using either one of these or a rotary solenoid:

http://www.lasershs.com/laser_optical_actuator.htm

DZ · 01-13-2009, 04:54

The rotary solenoids work well as a shutter, apart from the noise. You can pad the opening and closing of the solenoid to keep it from being so noise.

Regarding the STP-8, I still question whether they can be used as a safety shutter....

**Displaser** · 01-13-2009, 05:28

"Regarding the STP-8, I still question whether they can be used as a safety shutter...."

David,

As the STP-8's have no spring/torsion return on them, I wouldn't disagree...hence the rotary solenoid mention. I may use one initially, but I'm not sure if the STP-8's will pass muster for a variance though.

**keeperx** · 01-13-2009, 05:35

are these all useless?
http://www.goldmine-elec-products.co....asp?dept=1178

**gottaluvlasers** · 01-13-2009, 05:55

i can get used or new GM20s and 120s. i will get pricing asap. its cheaper than retail!

-Marc

**Lasernerd** · 01-13-2009, 06:11

These are what I use

http://w2s.ledex.com/ledx/ds/lx000/l...sso?pcode=L229

CDRH-FDA approved.
and like your interlock switch for your lid make sure you get the right ones..or back to the drawing board!

**keeperx** · 01-13-2009, 06:42

this is a lendex
http://www.goldmine-elec-products.co...?number=G16331

**Lasernerd** · 01-13-2009, 06:50

Originally Posted by keeperx

this is a lendex
http://www.goldmine-elec-products.co...?number=G16331

that is a plunger,not a rotary spring return

**mixedgas** · 01-13-2009, 09:37

UPPS, hes right, its a plunger, useless.
well, you could add a spring.
Steve

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