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I got a 200 mW green years ago from Sky. It never put out 200 mW and if the temperature wasn't just right, I got about 50 mW just like right now. HM

Nice housing. I started with a plastic replica and machined all the laser stuff to fit it. Mine still has the sound board. I used a logic level Mosfet as my 2+ amp current supply (switch) from two 14500 cells in parallel. HM Pretty simple build for lower power. It's still impressive.

Looks like a big pulsed CO2 laser -- Nice ! HM

If you tip the rotating laser upward, it will start drawing an arc which will increase as you tip it up farther. Line generating lenses are available. You may be able to modify an existing level with a more powerful laser but don't look back at it. HM A lab laser with heat sinking is expensive...

When I started years ago, we were buying the newest Disk writers to harvest the red diodes to see how far we could push them. 50 mW was WOW and then we got 100 mW! Everyone was testing, building the LM317 drivers and posting graphs. 50 mW of green was way expensive. Popping balloons was a...

Now I'm wondering if the plastic IS the 12 mm slit. The Grating looks OK. HM

Poor door! - HM

Note: Anyone getting one of these should know that there is what appears to be a plastic OD filter of some unknown value behind the input slit. The use of lasers which can "pop" or burn should be diffused of the slit will cook. How do I know that? ... HM

Atom--- At present, I'm only trying to get it close and that's likely the best it will do. I used the 520 laser and the 532 is as close as needed for present on the graph. Thanks -- HM

Tonight I used a HeNe to calibrate 638 and my 520 to set my calibration. I now see that my 405, 445, 638 and 650 diodes are a bit off. I will check with my green HeNe tomorrow. HM

The war on poverty has spent a "few" bucks and we have more poverty. We doubled our food stamp program and we have more hunger. In Iowa we added 1% to our sales tax for teachers and schools and we got 3 million dollar gymnasiums. We increased our gas tax by 10 cents per gallon for our old roads...

For the first question, I install a dummy load across my adjustable power supplies. I use a 2.2K ohm to keep a small load in the regulator. HM

I got my mini Spectrometer! It's a bit of a trick to get it going BUT how do I calibrate it? This is what I read in nM: Input beam - Normal display - Flip 405 ------------ 980 ----------- 490 445 ------------ 903 -----------...

Paul -- I PM'd Sta and maybe he has some documents which they say are included. Mine seems way off but no calibration instructions. HM

I got my spectrometer today -- FAST shipping. I plugged it into two computers and the systems only recognized the camera. NO software. I was told that I need to download the software from their website -- What a mess -- I can occasionally get a display but no calibration instructions or...

I should mention that I defocus the output for glue. Actually, my dentist's "UV" device looks more 450 nM. HM

HEYyyyy ... Will the blackbust 8 drive a 405 NM diode with about 12V input? Mike

I try to talk my dentist into giving me outdated glue. He can't believe my 405 lasers! RAPID cure. HM

Lasersbee -- Thanks for the update. I may affix the "loose stuff" with a few drops of UV cure glue. He says that I'll have the tracking number tomorrow. :whistle: HM

He asked me to wait 3-4 weeks. Its now been 4 weeks and no tracking number or communication.:yabbmad: I questioned again through ebay. HM He replied quickly and says I'll have a tracking # tomorrow.