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    Fenix TK75 - How to remove bezel?

    I have purchased a used TK75 from ebay and wanted to open the head and discard the LEDs. But it does not unscrew. Has anyone used this thing as laser host before? Any clue how to open he head? I was interested in this host because of big diameter - almost 75mm heatsink with many modules (and...
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    96% efficient LEDs - can anyone trust it?

    Hi, Searching in ali I ran into this seller of UV curing modules for 3D printers. The LEDs here look different from ones in 100W LED I used to play with earlier. In description/specs stands efficiency 96% and working temp 26.7-30ºC..."very low heat generating" (250W unit!) What could it mean...
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    Where to find the plug for NUBM08 PCB?

    I have a question to the members knowing different kinds of plugs and connectors for curcuits: What kind of 8-pin sockets are there on (used) Nichia blocks sold in ebay and where can I find the right plugs for those?
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    Funny story of PBS combining of two 9mm Ushio reds

    CDBEAM reported that the divergence of this 9mm red LD is awful and yes it is but since I have them I decided to combine (Alaskan, you asked someone to try this, here I am). First subject was cooling: These red things like cold to perform and deadshadow has made a portable with TEC cooled P73...
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    Laser Gatling - getting 8 CORRECTED parallel beams from NUBM08 block

    Hi, I am returning with another build about what one can do with a virgin NUBM08 block. Let us call it - Gatling laser??? You can consider this thread as a continuation of that one: https://laserpointerforums.com/threads/test-of-diodes-in-nubm08-block-all-at-once.103392/ but now I want to play...
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    Test of diodes in NUBM08 block all at once

    This is the follow up of the story about NUBM08 block from taobao. When I finally received the PCBs I tried to solder one of them to the block. Was not easy with my old soldering set of little precision, but finally got it. Not all perfect but OK. I had a compact Cu HS for P4 and purchased a...
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    Test of diodes in NUBM08 block one by one

    From many tests with single laser diodes discussed here we know that the LDs with G-ball of even the same type can slightly (or not) differ in power, wavelength and quality of collimation by attached G-ball. Since 2 years ago when the 8LD blocks have appeared on ebay I wanted to know if the LDs...
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    I burned a wave plate by putting too close to Ball lens

    I was playing with the “Tank gun” device which as some of you may remember was supposed to combine 2 NUBM06 and 2 NUBM08 (all LDs with Ball-lenses in place). But for the reason that the beam of 08 passes through Blue-Blue dichro at low currents (less than 3A) I replaced both 08s by 07s (having...
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    Sanwu expander as compensator for bad spots from some Ball-lenses

    Red Cowboy has mentioned many times that he could make a very far range burner from a single NUBM44 or 06 with G-2 by applying 3x Sanwu expander after 6x Cylindrical lenses for beam correction. I wanted to check if G-2 was really necessary in this optic trail, because the possibility to shift...
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    Need "Reverse" PBS for 20W "laser tank gun" prototype - do they exist?

    Need "Reverse" PBS for 20W "laser tank gun" prototype - do they exist? As promised earlier in other threads I am trying to make a 20+W blue single beam laser by combining 4 high powered LDs in a way I suppose this disco module does it...
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    Motorised Zoom/Focus Assembly from A130-type PJs

    Sure many members here have extracted M140 diodes from used A130 PJ series. Has anyone tried to hack the motorised Optics unit? I wonder how the motor(s) moving lenses can be driven from an external power source. Previously I have tried to apply voltage on any pair of 4 coloured wires but it...
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    Knife-edging four NUBM44 in Lasertack micro module

    This project was inspired by former avatar of Alaskan. This is my first experience in knife edging of multimode LDs, so I tried to prepare well - last year I asked CDBEAM to make me a Quad Heatsink-Holder for four 12mm DTR modules from a solid block of copper. It should replace the small Al LDs...
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    WTB: Big 6x cylindricals (1-2 pairs)

    Hi, I would like to buy one or two pairs of Big 6x cylindrical lens pairs which have been used in some of older builds posted here on LPF in order to do comparison with newer 6x pairs from LSP and OptLasers. If anyone has a pair of these he is not using please respond! From CDBEAM I know that...
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    Set-up for combining 4 LDs

    Since today is the long weekend in Spain when I do not have to go to work, but Labour Day what means that one has to work and not just stay idle, I decided to finally build the set up for combining 4 LDs. There was a lot of talking on LPF how this could be easily done but no one yet has posted a...
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    Half of G-ball lenses on NUBM06/8 are as good as G-2 (do you agree?)

    Many times on LPF there was a discussion how good Gballs are compared to G-2 and other collimators. The main point was that it was chance of a draw to get an LD with Gball producing a beam properly collimated to infinity (a thin line on a wall 5-10m away) like it can be achieved with G-2...
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    2+W single mode by combining 4 LDs (theory)

    During last months I have been playing with Blue-Blue dichro for combining 445 and 462nm checking different types of blue diodes. Besides multimode LDs I also checked some of highest power single mode ones - among blue and close colours these were of course BDR-209 which according to info found...
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    Jld6325za-g84

    I found it here: RED 638 2500mw Strange that name ends on G84 - could this mean that it is a (chinese) version of Mitsu 3-Beam diode or maybe something completely new? But expensive and min. purchase of 10 pieces and 2.5W could mean pulsed, not CW. I do not know. Divergence looks pretty bad...
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    A Dichro to combine 520 and 532nm?

    Recently I was looking for dichros to combine 532nm DPSS and 520nm LD lasers but found nothing in ebay. However, on chroma.com they have a dichro filter 59012m for 350usd which acc. to graphs has transparency 95% for 520-525nm and only 0.14% for 532nm. The question here is I am not sure if...
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    Combining two NUBM08 with Dichro (no PBS involved)

    Sorry I did not have time to post in LPF more often. But here is one interesting thing I have found when testing 445-462nm Dichro mirror from Live Lasersystems with some of new LDs purchased from DTR for this purpose. From two NUBM08 he sent me (one with G-2 and another with stock lens) one...
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    The brightest single blue beam (4 diodes combined)

    Yes I know that some hero members here have done videos with up to 200W blue beams long ago but those consisted of multiple knife-edged beams and I wanted to try producing a single beam where output of 4 LDs would fit perfectly on the same optical axis. This year I have assembled 2 optical...




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