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i meant to push the window off with it

You should use that cap. It will prolong the diode's life

Re: 250Mw laser broken I think you put the battery in wrong. No reverse polarity protection. Laser is probably dead. Also a good bit of that 250mw is probably ir so be careful

The glass dust was caused by the drill. If you take even a precision drill press at 6500rpm to a highly sensitive semiconductor with a window thinner than a piece of paper chances are that it will break. The stuff on the window was most likely caused from burning withought a lens. It will...

Re: 250Mw laser broken You can do it with a paper clip too

NEVER take a drill to a diode. You will destroy everything inside of it 99% of the time. Just take a q tip or something and gently push it until it pops. It will still break usually but it reduces the chances.

Yeah I've had that happen a few times to me. You need to have a really good heat sink. Don't run your laser for more than 20 seconds at a time. Diode is damaged but might still be usable.

Use a big heat sink if you are going to run it for that long. And a fan. Possibly more.

No you can't decan it withought removing the module. There was a recent thread about a guy who took the window off which removed that stuff but also made it more fragile.

Welcome to lpf! Remember to use a driver as opposed to a resistor for the diode! It is a bit different from a typical led!

Wow nice shots. Nice to see other people looking to the stars... where we will live someday... +rep.

Oh gosh. Decanning a 5.6mm with no experience with it is probably going to destroy the diode. I'm crossing my fingers that first time's a charm works for you.

Many hosts can be fitted with an m140. Greenies need a big host too. They put out a ton of heat(more than 445)

Those beam specs actually sound good if you aren't using a lens. Also dust on the window usually doesn't dramatically make the dot change in overall shape(that is the problem from what I am hearing). Check the lens and make sure you didn't screw it all the way in. Also if you previously...

You get your thread to the top of the posts so more people will see it. To do it you write bump :p. It is mainly used for threads related to bts.

There is a tightening screw. In addition I also use a bit of artic silver thermal epoxy just for better thermal conductivity.

Agreed. I did that with a relative and he swung the beam across a bay at many houses. I literally grabbed the laser and had a little "talk" with him.

Where the beam APPEARS to have little to no divergence. The focal point is far away. He is not going to get either of those for under $50. 488nm go in the thousands.

First off get safety glasses. The eagle pair from survival lasers works quite well. Burning is all about focus. It could be 200mw but is focused to infinity. I am able to shoot my hand with 300 mw focused to infinity and I only feel a bit warm. When focused it burns quite well. Also no...

With all the new people here this thread needs a bump