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Massive explosion in China. Possibly 100's killed. A mistake at a chemical handling warehouse and...BAM it's over. Brings my mortality right to the forefront of consciousness. China blasts: Casualties in Tianjin port city explosions - BBC News -G

Thanks Ehgemus...that means a lot coming from you! noobphaser - Sketch Up is free. The trial will expire, but I've been using 2015 for over a year and the only feature I miss that's not available in the free version is Solid Tools. There are other ways to do those things, tho. -G

Yes, that is the only shapes it shows on the toolbar. What you gotta do is, when you pick the pentagon, there is a little box in the lower left of the screen, and before you draw the shape you should type, say, 8s <enter>. That will change the shape to an octagon, or any number of sides you...

The 3-elements don't do anything to the divergence. What they do is produce a more round terminus dot by truncating the edges of the long axis of the beam. So instead of a rectangular shaped dot... .____...................__ |____| you get.... (__) a rectangle truncated by the edges of...

I sucked at first, too.....bad. But I kept at it, and now I've modeled quite a few things. I've played with a number of free modeling packages, and by far Sketch Up has been the easiest for me to grasp. There are lots of tutorials out there to help with the learning curve, too. And once you get...

Sweet ped! Are the arcs white...or those weak looking orange-yellow ones? -G

I got my hands on a Sony flyback out of an old crt monitor (pic below), and a 12kV 35mA NST new in box (no pic yet). I think we also have a 30kV NST new in box at the shop. Are they even powerful enough to be used in some kind of HV project? What can be done with them besides just making a...

It's in the op, noob. I FREAKIN' LOVE SKETCH UP! And thanks everyone for the nice comments about my concept. I don't think it would be too hard to produce. But, of course, a mill would be needed along with the lathe. Vanillah-- I came up with this design outta my own cranium. I...

This is a little something I whipped up after hearing Alaskan mention how he likes Big Ass Fins™ on his hosts. The major diameter of the fins at the top is 2". What I filled in with blue could be any color, or even GITD or Tritium inlays. Pay no mind to the extra modeled parts laying in the...

How 'bout some of these guys...I've been diggin' me some Tuvan throat singing for the past few years... Dirtwire is a solo spinoff by Dave Satori of Beats Antique...and Kongar-ol Ondar, well he's a master...no Grandmaster Tuvan throat singer...with no equal as far as I'm concerned...

Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please No Matt....that red one is rated at 30mW according to the label. It probably won't do that much now seeing as how it was made in '03. But hell...for 30 bucks I may spring for it. -G

This needs to end, though I know it never will. It will only get worse as more and more immature, thoughtless people get their hands on cheap, powerful lasers. Sadly, there have been more than 50 strikes in Texas alone since the beginning of the year. The latest moron kept on until he was...

Nobody here wants to spoon feed you, or anyone else for that matter. If you're completely helpless, perhaps you really don't need to be handling lasers in the first place. What I'm hearing is "Basically I'm lazy as fu*k and don't want to spend ANY time looking for the information I need, so...

So does every Dollar Store where I live. -G

Congrats, man...that's an out-f'in-standing price! -G

This exists? Where is it located? It should be a sticky! -G

Haha...he burns his hand at 17:20! And, where the hell are his goggles?

There are going to be ALOT of civil aircraft in the air tonight watching fireworks. Be careful with those lasers!!! That is all, -G

That's what I was about to say. Please tell us that at least your child had goggles on? Please? If not...BAD BOY...BAD! (smacks nose with rolled up newspaper) heheh :scowl: -G

Re: 638 700mw build beam shots added It does, but only in the electrical side of the system. You can only supply the diode with a current up to its Imax, go beyond this rating and you risk ruining the diode. Think of it this way. This is a crude representation of a handheld laser system...