help for on diode

[a_pyro_is]

Toked,
I still agree with The Great Gazoo, check your focus first. If you want to burn up close (like 6 inches) then the spot on the wall across the room should be several feet across.
Next, does the beam look nice and bright?
If it's not very bright, like less than a $1 pointer, then I think you killed it by running without a proper driver and cooking the poor little facets.

Edit because I'm too slow

Gazoo, you beat me to it.

 

[toked323]

its very bright and i see the beam and i am using fresh alkalines

 

[a_pyro_is]

Can you unscrew the lens a few turns?
What size is the spot 10 feet away?

 

[toked323]

very tiny but very bright

 

[a_pyro_is]

Try opening the focus up a bit to burn up close.

 

[toked323]

i did that already it just wont burn

 

[rog8811]

Am I right in thinking that you opened up the aperture at the back of the lens holder? ...if that wasn't you it would be worth doing it, if you have done it can you get a small dot 3 or 4 inches from the lens? At that distance it should burn easily.

Regards rog8811

 

[toked323]

i did but maybe not enough

 

[Gazoo]

Try dropping the resistor down to ~2 ohms and see what happens.

 

[toked323]

i dropped it to 1.5 ohms and it doesnt burn im doomed could it i have a bad focus lens