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Hello, is it possible to cut an M11*0,5mm tread on the sanwu beam Expander? (is there enough material for a down size?) I orderd a beam Expander yesterday and i have the 11*0,5 mm cutter in my Hobby room. I do not like this Special threads. I also noticed, that the DTR copper moduls in 20 mm...

Hello Rich, thanks for the photos. They give me inspiration for my next project. I am still waiting for the 700 mW red laser diodes from techhood. Also for the 490 nm diode from DTR. I love this color! Shipping from US to Germany needs some time. The problem is the German custom. best regards...

Hello Cosmonaut, yesterday I got 3 Convoy S2+ from China. They look very nice in Grey. The machining Quality seems to be top. Unfortunately the head seems to be one peace. At the moment, I have no real idea how to build a copper module that would fit and look good in this host. Maybe, I will...

Hello Cuperic, welcome to this Forum and have a nice start. I think the homepage of DTR lasers is very helpfull for beginners, but I am not sure If you are a beginner. best regards Edgar

Hello, joining this forum since four weeks, i noticed, that most of the members have no names. Is that normal for an US forum, or is it some sort of data protection? best regards Edgar

Hello, at ebay, you will find a lot of cheap laser drivers. For your low current application, a boost driver will be fine. Most of the drivers have dimensions of 10mm*15mm. At techhood you will find the driver you Need...

Hello, I think, that is the problem with all new members. I joined a german forum since it started. So I knew very well what problems were discussed in the past. Sometimes the search function is not very comfortable to find the right answers. best regards Edgar

Hello, i have a 520 nm diode 750 mW. At the moment i use a chinese buck/bust driver. So the diode is driven with approx. 1200 mA. Tomorrow i will change it to a buck driver and drive ist with 1800 mA. That will give 800 mW output with a lense. How do you de-cann the diode, in a lathe? best...

Hello, what means De-canned NUGM03? I have seen this diodes with ball lense on Ebay. Do you remove only the ball lense or the complete metal housing? I have a green 520 nm laser with approx. 600 mW Output, but I would like to build a green laser pointer with 1W+. So this Diode would be fine...

hello, My 470 nm Project died. I am unable to Open the Chinese Module. It is glued or pressed. Best regards Edgar

Hello, I think, the thermal conductivity of brass is not so bad compared to Aluminium alloys. Of course, pure copper is better, pure silver is a little bit better than copper and natural Diamonds are perfect (joking) If pure silver would be cheaper, i would built a heat sink from silver. It...

Hello, no it was a chinese 5,5W laser with Aluminium heat sink and fan. The heat sink did not even get warm. When someone overdrived the diode , than it was the producer. It was this one...

Hello, I have a laser power meter. The problem is, that a 5 W blue Diode died short after i tried a "red lense" . I am not willing to make such expensive experiments in the future. That was the reason for my question. But DTRs answer works well for me. Yesterday evening i started to build a...

Hello, my experience is, that you save the most time, if you don`t answer to a question you do not like. If you get no answers to your questions, you quickly find out, that something goes wrong. best regards Edgar

Hello, thank you for this Information. I have differnet boxes for different lenses. But when i look atn them, I can not see any difference (chinese glas lenses) That is the reason, why i am a little bit afraid to mix them accidently. best regards Edgar

Hello, looking for DIY laser parts, I see, that there are a lot of differént lenses for different wavelengths. Do I need a special lense for every different wavelength? What will happen, if I use a "red lense" for a 450 nm Diode? Is there only a bad focus, or will it destroy the Diode by...

Hello, yes, I did it. With a 6,3 V Zener diode and a 1 K Ohm Poti, I built a 5,7 V power supply from the 12 V of the fan. The laser is well regulated with the voltage from 0V to 5,7 V. I think , i will add a normal diode to get the voltage down to 5 V. I did some cutting test. The diode cuts...

Hello, I will try it with a poti. and a zener Diode. I will take the 12 V from the fan. Just another question, can anyone tell me, what is the thread size of the 20 mm DTR module? Not the M9*0,5 mm. best regards Edgar

Hello Paul, yes I can modulate my Output power with a Voltage between 0V and 5V. I tested this with a laboratory power supply. Today I will check if I can find a 5 V source on this Driver. And please, don`t trust these chinese ebay descriptions blind, otherwise you can also order a cheap 10...

Hello, I also asked the seller for further information, but they are only seller. They sell both, ttl and analog drivers. So the descpription is a mixture of both types. Hello Anthony, what do you mean, the wiper is the input? Do you mean the middle contact of the poti ? Unfortunately i have...