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Re: ILDA's Laser Safety Officer (LSO) course Good post Len. I completely agree with your statements regarding LSO certification - it can make the difference between landing a gig and being passed over for someone else. But more importantly, even if you never plan to do commercial shows...

Amazing craftsmanship, Bob! That thing looks like a commercial product! Your machining skills are matched only by your imagination. Any chance of seeing that thing in person at SELEM this year? Adam

Per your instructions, I generated a single set of 16 non-repeating random integers from a range of 1 to 213 (inclusive) with no repeats using the random number generator on random.org. When you select the "generate non-repeating integer set" function, the website automatically orders your...

Len contacted me last night and asked me to do the drawing via Random.org. Below is a screenshot of the numbers as they came up. The winning numbers are: 2 9 23 45 47 48 49 61 81 116 123 139 145 151 209 212 Adam PS: (Edit) Due to the file size restriction on attached images, there are two...

Hey Len; It's really hard to make any judgements about those scanners without actually testing them. If Chuck is serious about stocking them, he ought to order one of each (discretely) and then subject them to a series of tests to see how they stack up to other scanners already on the market...

Re: TEXANS and any others who like lasershows Well, let's not promise that just yet, Len... After all, I'm still not sure I can make it! I need to see what the maintenance schedule at the plant looks like after the first of the new year. However, assuming I am able to come (and I am working...

You don't want either one of the rods in the two auctions you listed. The first one gives no details about the rod length or diameter, and since you'll end up having to add external mirrors to it (which is a royal pain), I wouldn't pay $250 for it unless you knew it was a decent sized rod - say...

You can use the output from your sound card to generate a liquid sky effect. Load up a 100 Hz tone and play it through the speaker. That will rock the mirror back and fourth 100 times per second, giving you a smooth fan of light. Add a little fog and you're all set. (Of course, you need to mount...

Hi Andy! Yeah, I decided to jump in over here too. (Like I didn't already have enough posts to keep up with on PhotonLexicon, right?) ;D Good to see a familiar face. Cheers dude... Adam

They pop up on E-bay all the time. Search for "Galvo" and you'll find them. I wouldn't pay any more than $20 for them though. In fact, Chris Leubner is running an auction for those exact steppers right now. Search for auction item # 300196337893 and you'll find it. (Can't post links yet, or I'd...

A 635 nm laser would appear brighter to the human eye than a 650 nm one - even at the same power level. So it's possible that the gun you saw had been modified. Or it could be that the laser in your gun has gotten weak. Do you have a power meter? If so, you can check both guns. If you can get...

If you absolutely *must* make a laser completely from scratch in order to satisfy your ego, I would suggest a ruby laser. ;) The power supply is very easy, and the laser head itself is quite straighforward. Sure, the ruby rod is going to be expensive, but that's the only part that will be really...

Saw a link to this discussion on PhotonLexicon and decided that I just *had* to get in on this deal! My lasercheck tops out at a watt, but I've got an argon that should be able to do a little more than that. Plus a lasercheck is lousy for measuring a multi-line laser anyway; a thermal meter is...

Hello to the group! Just dropped in from PhotonLexicon. Saw the group buy for the DIY power meter PBC's and just had to sign up. I must admit that I favor projectors over pointers, but I'm sure there's plenty of overlap. Looking forward to exploring... ;) Adam