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I'm working on a knife edge / PBS cubed handheld for a NUBM07 array, & wanted to show some progress pics. Flexmounts are done, pretty stoked how they came out. Still have a lot of work to do, updates to follow.

I have been experimenting with different setups to reduce divergence on multimode diodes. One idea was to just use 1 cylindrical lens for each axis (rotated 90 degrees) and eliminate the aspheric collimation lens completely. Doing this allows you to use an extremely long focal length cylindrical...

Hello LPF, it has been a long time since I have posted, having taken a break from the hobby for some time. In that time, I have been pretty fortunate to acquire a garage and a solid assortment of manual machining tools: full-size knee mill Lagun FTV-2, precision lathe Monarch 10ee, engine lathe...

Hello it has been about 9 years but I'm back in the laser game! Glad to be back and this time I have a garage with a milling machine and lathe which I am learning how to use. Machining is useful for all my hobbies and I'm practicing on lasers. Here's my setup: Lagun FTV milling machine &...

I wanted a clean, elegant manageable laser for actual pointing use. Battery life, portability and divergence were the main design parameters. So I went with the PL450B in a really nice stainless steel AAA host. This is the smallest host I have found at only a few mm larger than a AAA battery...

Hey all I need a cheap, simple, driver circuit that works with 3.7 Vin and will drive LPC826 diodes. Off the shelf IC's and components preferred. I have already blown my budget several times over. Background: I am building a 7 diode focusable handheld with an integrated beam expander and...

Hello I have a complicated project requiring CNC maching. Emachineshop looks like an option, but low volume parts are very expensive...So I want to know what I may be getting into before I drop the dough. Does anyone have experience with emachineshop that they would like to share? I am...

I am either being a complete idiot or there is something wrong with my browser. How do you add attachments to PM's??? I don't see any place to do this. Help is appreciated. -J

Hello, Quick writeup on my first build. OBJECTIVES: 1) Good heat transfer: Direct press heat sink for diode, thermal paste for drivers. Eudamonium did a great job on a custom direct press heat sink. 2) High Power: 445 baby! driven with 2 flexdrives V5. set at 750ma each, preset by DTR...

I have often wondered this: Why don't we measure the "optical efficiency" for lenses, i.e. a "lens power derate" which would be measured by (optical output with lens/ optical output no lens)? It would make power comparisons between lenses very simple. Right now, all threads I see are on "AAA...

Hello everybody, I have designed a custom heat sink, and now need to find someone to fabricate! I know there are a lot of really good machinists on this forum so I wanted to see if anyone here can help me. Please see the attached drawing pdf. and picture of what I am talking about. I think...

What do you guys think of this Aspheric lense from Thorlabs: Thorlabs.com - C240TME-A f=8.0 mm, 0.5 NA, Mounted Geltech Aspheric Lens, AR: 400-600 nm It has an 8mm focal length and 8mm clear aperture, compared to the 4mm focal length and 5mm clear aperture in lenses like the 405-G1. The only...

I am machining a custom heat sink for standard 5.6mm diode; does anyone know the correct diameter hole required to achieve a correct press fit? The heat sink material is copper. Thanks and regards, -J