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Re: PERMANENT THREAD: Ebay& other internet FINDS of interest- read all the OP please subscribed

Im in Canada and its bad here too. If you are in Canada let me know where as I have found a few mastech suppliers across the country here but it doesn't do me any good none are within driving distance of me.

Are you in the US? have a amazon prime account?

So you have done months of research. According to your other thread you already know which goggles you are getting(which im assuming is why you have deleted it as it would completely contradict this thread now). But yet somehow don't even know what a DPSS laser is and if you are purchasing...

I read them all the time.

Im not involved in this GB but spent over a hour reading this thread anyways as it looked to long to be a by the book GB, I thought you guys might appreciate a neutral outside the GB opinion, If not then disregard my post :) From the outside looking in this does look like it was handled poorly...

Just checked. With the external lens spring and focus adaptor I was using the lens can't physically screw in far enough to contact the diode, the coiled spring prevents it. Also the end of the diode appears OK.

Not the tailcap, the S4 tailcap works fine on my C6 host PL450B and PL450B tailcap has same issue with my S4 660nm.

Not the scope shot I was talking about above but a good indication of how crappy these cheap Chinese PSU's are compared to the quality mastech units. Be aware: Yihua YH-305D bench PSU - Page 1

No Teflon tape, had it on original lens but was removed I found I prefer lens springs instead. Neg was straight from the driver/pill as far as I can tell, was a kit from survival laser all I did was put it together no soldering required. There was two wires from pill to diode.

Drive current wasn't up to me its the standard current for survival lasers kit.

Yeah I was unable to get it mounted under my microscope to take a look as I haven't disassembled the host yet. Ill try a regular magnifying glass though that's a good idea.

I don't think that was it, Although I was screwing the lens towards the diode to get it into focus but still had some room before it contacted the diode. I also inspected the lens after as I suspected that might have been the issue and it does not appear to have any scratches on it.

So my Survival laser 660nm is no more. No sweat from Gary at survival lasers I got a reasonable solution when I talked to him and will have a new diode/driver soon. I just want opinions on why it died. Stats of laser: 660nm LPC-826 driven at 530ma by Survival lasers driver. Had about 20 Hours...

the issue is stats cant be trusted on cheap PSU's. I almost purchased this unit 30V 5A 110V DC Power Supply Precision Variable Adjustable Digital LAB Grade 305D | eBay But then I seen a scope shot of it overshooting set voltage by over a full volt on power up.

Im looking for one as well so im very interested if anyone has used this unit. Everything I have read says stay away from the cheap Chinese PSU's as there power on ripple spike is more than enough to fry something as sensitive as a laser diode and I should get a mastech or B&K Precision but...

some already mostly depleted 123's would probably work(reading lower than 2.7V) but then the issue of weather they would still be able to supply the current at that level of discharge might be an issue. I would just get a 18650.

Then hook it up to a 6V supply. 2xCR123's, 4xAA/AAA/C/D

Even with the higher wattage single modes we currently have(1w 405) I would say eye protection is a must. So if you are going to be wearing eye protection anyways you might as well go big :)

If you don't care about beam visibility a high wattage c mount ir laser might be your best bet, I'm not sure any laser below 10 watts will burn fast enough at that range. I mean are you going to be OK holding on target for multiple seconds or will you want it done in 1-2 seconds? And eye...