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What he is saying is any laser that would be safe for presentation will have a barely visible beam pointing out stars no matter how much you spend, I have a 80mW green laser and the beam is not very visible indoors but the dot is very bright for presentations but even at 80mW the beam isn't very...

:horse::pop::na: May you should ask for a mirror before you try to place blame.........

For sure the 44 is pretty impressive with a little bit of work when i can point the hammer at the Las Vegas asphalt street and instantly make it smoke !

I think we're both beginning to get a handle on what is really possible without breaking the bank !

That's the same as i experienced ! Your right the trick is alignment for sure, The temp housing i made on the quick wasn't very good at the alignment so the farther away i checked the dot the more messed up it was but even so it still burned hot but i know once the alignment is much more precise...

No, So far i've only used the output lens because the input lens from the JL BE is too small for the 6X cyl corrected beam...... But i'm will to bet the input i'm using now is at least as concave as the JL input lens ? The JL input lens is a PCX lens (flat on one side) and the one i'm using...

By the time you get done you could end up doubling or even tripling your range with a home brew BE ! For a second there i thought i was going to go by you with the smallest dot with the most power at the farthest range, But i can see that's not going to happen ! lol :banghead:

There you go, Now your cooking ! That should really increase your range ! Maybe you can have ElectricPlasma 3D print a BE housing setup ? That's so cool you could just screw the output lens off ! To get the output lens out of my jetlaser BE i had to destroy the housing but i got both lenses...

You can sell any gold on ebay for over melt value easy, No mater what the Kt it is all gold sells on ebay above melt value of the day ! I've sold gold over melt value twice on ebay and it went quick !

Heck ya ! I wonder what the mag is ?

100% correct ! If you melt a alloy you'll have a molten alloy and when it cools you'll have a alloy again......

Hey ! maybe there is a lens that would work great as a exit lens for a BE mod ??? And only $5 bucks !!! https://sites.google.com/site/dtrlpf/home/projector-optics-mirrors-dicros-lenses-motors

lol, ok that's good to know........

determine the focal length of the negative lens

Is there a easy way to do that too ?

Using this way I'd say the FL of the exit lens is about 180mm ?

For the people who found the pictures interesting here is a slow motion video showing how the steady vibration of the tuning fork is turned into rotary motion to drive the hands, It's called the "indexing system" which consists of the indexing wheel, index finger that is attached to a post on...

I'm pretty much the same in that i rarely wear any of my Accutrons, My daily driver is my dad's 1970's Gallet Multichron Chronograph that has a Valjoux 72 movement, I found it after he passed away two years ago, It was tucked away in his dresser and wasn't working so i went through it and...

I don't know the focal lengths of the lenses, I focus it by sliding the large black section fore and aft, I made this BE through trial and error using scavenged lenses from a hand full of sources... This is one of two lenses i got out of a set of binocular's, i'm using the other one as the...