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Been running the 638 Mitsi diodes in projectors at 850mA (DTR's modules) for 2hours at a time for 6months now. Now the slightest indication of issues.I use the Zbolt heatsinks if it matters....

It's likely a 638 Mitsi....you could build it yourself with a host kit for about the same price and get more power. Just remember beam divergence is terrible with 638's. How are you getting 1w with a 650?

I have a PLTB450 and a M140 running at ~1.4 watts in two side by side projectors. The PLTB450 is ever so slightly 'bluer' than the M140, but you have to strain to see the difference. The PLTB450 has a bit tighter beam than the M140, and the beam behaves better with cheaper optics. For...

Evertime I try to zap aiptasia with my 1.5watt blue the buggers just retreat back into their rock. I spray some vinegar onto them with a plastic syringe at close range before they retract, then repeat a couple times. Does the trick

I just got a 150-200mw greenie module from Laserlands, except it was the 12volt version for $60. I have no doubt the laser is throwing 150mW -200mW as advertised. I've ordered quite a bit of fixed laser gear from laserlands over the past two years, usually 200mW reds and various greens to...

I have a pile of tricked out Servo based Reke1's in production, and not enough galvo based gear. The Servos are *ok* for awhile, but they get on my nerves with their hectic motion and are obviously nowhere as smooth as even rock bottom 10k galvos. One thing that caught my attention with the...

The spread at 90' is still better than any 532 I have around, and the Q-beam cost $8,000 new. What glass is being used?

It's not the power of the laser that should be discussed here. Some of the 445's I've tested out before mounting them in laser projectors, mainly the Osrams with simple glass elements have scary burn capability up to dozens of feet at around ~1 watt. The optics and collimation here are what's...

Re: How to Make Fog Without a Fog Machine For better beam viewing. "Cheap & Easy for Just an update on this......my glycerin formula is now officially used by several commercial DJ's I know along with my own venue which runs three different fog machines. The glycerin / water mix at ~1/15 runs...

The NAVY still needs a certificate of variance, and the X-laser anti-drone weapon will only work against chinese made drones :-)

I know the jest of this thread is ridiculous advertising on the part of (mostly) chinese wholesalers. However, if we look at the broader picture it's cheap chinese production that's keeping prices down to the point we can afford them, and the chinese are just responding to demand. I mean, what...

At present I don't think I have a functional 445 pointer. I'm too busy running a couple businesses using the damn things as safely as I can, and honestly don't get the attraction of the battery powered pointers. I have two relatives who are E-R surgeons. Last time we talked they had never...

The 'Nanny State' at it's best. While nobody here would disagree with the potential for high powered pointers to cause eye damage, I challenge the author of that article to provide documented examples of this actually happening. Sure, we have plenty of examples of kids shining police...

For the transmission holograms are you using the single beam approach, or splitting the beam into reference and object? Some years ago I used to make transmissions with my HeNe, but lost interest because I wasn't aware of the integraph films. Kodak S0-173 did the trick, but the holograms were...

Here you go - shot this tonight. From the projector to the back of the monitors is about 60', so the beam is having no problems traversing the smoke. Awesome liquid sky (for a $50 servo based projector), and the video can't do it justice. Might add a few more......but I want to see if the beam...

I'm using the stock 850mA X-Drive and 638 from DTR :) I just use the 12volt circuit inside the projector to power it, and everything is cherry. I really need these to hit a duty cycle of at least 500hours, so I don't want to push them harder than I have to. Oh yeah....even though the mitsi...

Just a note I got this going in a Reke-01 (servo) with my single axis, liquid sky hack, and it looks great. Used a big Z-bolt heat sink, and it doesn't even get warm. Rotated the diode so the wide axis was in the plane of the scanning, and the beam width / divergence is actually tighter than my...

Yes, please do. Looking at models people are having good luck with.

Buddy of mine was in special forces during the Panama invasion (sniper). Best story he told was how they leaked so much false information to Noriega's forces it was almost comical, including about where their drop zone was going to be. So....he and the rest of his Rangers group dropped in...

You just described the FDA / laser projector bureaucracy in the USA :undecided: In this respect the procedural laws are in place simply to protect a couple of domestic companies. They can buy from China, but you can't.