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Ever tried with grease on a lense? :)

Laser filtered through irregular pentaprism, with a regular rotation, makes stunning fractal optical effects. VIDEO1: YouTube - Red laser pointer beam through crystal effects VIDEO2: http://www.youtube.com/watch?v=abvKA56SDTo Laser through optical fluids, makes stunning plasma animation...

Red diodes are not as heat and demanding as green are, though.

Received today the Red... is a tiny little wonder!

The new tactical blue 1.2W must be a BEAST

The "New red" was shipped today by DHL. Should be here next week. I must say that i paid for extra shipping service.

I've ordered that one too, as long the "cute" was out-of-stock for a while. we'll see how long it takes. Europe

This is one of the design i made, kinda of crafty, but i really think you get 99,9999% out of it :) The black termination, would be a legue of cast iron and black stone. As long is quite centered, the heat would be properly diffused.

With all the respects on your design (why dont you try by yourself?) I think that a DIRECT laser beam, reacts (as your design) as a bouncing ball, for a percentace of its power, let's say..80%... but when it bounce the first time to any matte surface, i think that it mostly reacts like a...

Yes, probably. I do not have the instruments to check the intensity of the diffuse light returning from the tube, but is very very mild and eye tolerable, i was able to dump a spartan, and while dumped, take off the goggles, without getting any kind of disturb, the room was kinda dark. So, just...

300$ for a 1 or 3mw its a LOT

Spartan 1W long cycle dumped - Intense close-up cycle with 400mw green + match lit If you need further information about my laser dump, i still have a couple of them for sale: http://laserpointerforums.com/f39/laser-dump-sale-60609.html

Cheap dumper and Capt america gone. Still a few of alu dumpers avail. VIDEO Intense close-up cycle with 400mw green + match lit

That's in the thread.. Some place where to buy a Yellow at a reasonable price?

None of both parts that you underlined takes the direct laser beam, they just take the diffuse light back. The EXPENSIVE part, that is a legue of blackstone and cast iron, designed for high temperature that i requested from an industry right here, is exacly the expensive part for the aluminium...

I read you full message complaining about price. The aluminium that you talk about, does not use a plain black stone, like the (very) cheap model, they use as a shield ad industrial material that is used for sealing car exhaust professionally, combined with black stone dust. This preparation...

LASER BEAM DUMP / BLOCK FOR SALE Point your powerful laser to a safe spot! Enjoy the view of the beam without diffuse reflex and worries! MODEL 1 cheap dumper *SOLDOUT* specs: cast iron tube, black soldered to black stone shield, matte barbecue paint finished, 5 inches. duty cycle max...

They look like, nah? I think theyre just some dust particles, the nova unfocus lens, even if has great build quality, is very very small.. lot of craftwork to adapt it to several pointers.

RED LASER 5MW, SQUARE DIODE, LENS ZOOM EFFECT 7MM. - 20MW DX GREEN LASER,NOVA IR FILTER - 20MW DX GREEN PURE LASER - 20 MW DX GREEN LASER, NOVA UNFOCUSING LENS KIT - 100MW DX GREEN LASER, NOVA UNFOCUSING LENS KIT - 400MW OLIKE GREEN, NOVA UNFOCUSING KIT, UNFOCUSED LASER - 100MW DX GREEN...

yah right. We are not plants, indeed. As opposite, there are some proofs that intense light at certain wavelenght (mostly, UV) can damage cell dna struct.