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Hey folks, I could really use some advice. I'll try to keep this short. A few months ago a friend whom is also an engineer employed by a major company in the Illinois had been given a project to build for a museum. The objective was to demonstrated the properties of a coherent beam inside an...

-thumbnails at bottom of page- friends, it's been a while but I haven't been far. In the quest for cyan i sacrificed an arm and a leg to purchase the Surefire X400 green laser/light weapon attachment. Price: $699:( This review is not on the Surefire light but mostly a BRIEF laser comparison...

Hey guys, need your thoughts and experience. It was a few months ago I purchased a 40mW CNI laser from Rhd. I love the host and the wavelength.(tho it looks more orange to me then what I perceive as "yellow") I compared it to my HeNe and the color is similar. My first portable 589 yay! Well...

Hey fellow members, I have this laser for sale and am asking $150 price for conus shipping included. Will ship asap w/ tracking. I enjoy this laser but need to buy some capacitors buzz buzz. features of this laser: -M462 diode. Pressed directly into head with quality socket* -X-boost set to a...

[preface] Good news, my tesla coil is up and operating again. That coil has been the Bain of my existence for the past month(s) but after some rebuilding and a substantial amount of trial & error it's working again. For now. Anyways. Throughout My various travels I came across these tubes...

Hey folks, Help me wrap my mind around something. When we talk about wavelength shift the first thing that comes to mind is the gain we achieve with the 462s. My Ndb7576 spectro'd at a whopping 471nm @ 2.6A! Greater amperage equals increase wavelength and apparent brightness. Now, how does...

This is a 24VDC control board to an industrial dryer. It accidentally saw 120 VAC.. Oops! Not me. Either way I volunteered to look at it for a friend. She is very knowledgeable but over worked. Plus she's hot and I like her *cough* I replaced the 220 ohm resistor but I'm not sure what the...

Hey guys, buzz buzz I removed the old junk from the bulky welding glove and made a frame that fits in the fist of most any glove(lefty of course). There is only one switch now to simplify things. This of course is just for fun. Not designed to be a actual weapon. And a quick video...

Hey friends, Apologies if there is info on this somewhere. Right now there seems to be a lull In LPF machinists but I would like to make a host capable of handling some of there powerful blues that are floating around. (I have an extra brand new 3 cell blue flash light) Requirements. The...

Hey guys! It's winter time here in the United States and usually I plan a winter trip. For 5 weeks spanning from February 20th to march 26 I'll be visiting three countries. First -Brisbane Australia, couple weeks in this area. Second- I'll be taking a round trip to Papua New Guinea. (Be...

Hey guys, With the amperage requirements becoming greater with the new powerful diodes and drivers my mastech 15V/3A isn't cutting it. I know in the past I have asked around but it was awhile ago. Should I go linear or switching? Jump up to 10A or should I look ahead and buy a 30/20A...

Preface This experiment/build has evolved and evolved over time in many different directions. First the idea of the host, I welded it at work on lunchbreak, then I moved onto the batteries and driver. The next and final step was cooling this system. I have no formal experience here but I am...

Hey folks Here is what I have today, A great host with a powerful diode. Survival Laser host and an 3.5W NDB7A75. At the end I will discuss some problems and complications. I started with these parts: -3.5W NDB7A75 -S4x bare aluminum host -1 LG he2 li-ion battery -SXB boost driver set to...

Hey guys! So here are the details. I am getting many requests to build custom low power pens. Mostly for dpss 532s but I might want to go with a few 650s(I just need hosts).<80mW My preference would be an aluminum body that can accept a 12mm module with a set screw. Also they need a tail...

hello folks it's been awhile since I have posted a new and interesting thread. I have not given up on the hobby just branched in other directions. Partially because I recently moved to large city and lasers into the night sky are discouraged. Ugh restricted to the garage. Let me preface this...

Hello All! It's been awhile since I've posted in the B/S/T section. Sam at Sam's laser FAQ told me today "one can never have too many variacs.." But I have some id like to part with: ] (these didn't come from Sam, the subject came up while discussing HeNe bricks) First I wiring one up that was...

So here is where we are: I didn't necessarily want to start a new thread since most of the conversation about this laser was discussed here. After determining the laser was not working I decided to cut it apart to maybe do this in the future with another laser. First I popped the end caps but...

Hey everyone, I've decided to jump on the bandwagon looking for either a 589 or a 593 I haven't decided which yet. And I was leaning towards the PGLs as oppose to the Spartan. I have never delt directly with CNI. Does anyone have any tips? I read in a thread somewhere that they were shipping...

Disclaimer: I understand the risks of pushing this diode. I'm sure the diode deteriorates very rapidly at this current. I accept that and will enjoy it for as long as it lasts.:) Ok, starting out, I've been reviewing the threads and watching the price of the NDB7675 diode and it has come...

Burrrrr! Yes, yes, everyone is probably tired of all the hype on social media about the snow. Here where I am in Maine we have about 2 feet and its still coming. Despite the title the snow is really nothing out of the ordinary. Without further ado here are a few shots taken with my iPhone...