Recent content by journeyman

So I was toying with this idea... The definition of a meter is approx. the amount of distance light travels in 1/300,000,000 of a second. So, if 300MHz at 100% DC is a solid line, one cycle equalling one meter. So if you pulse the laser at 50% DC, then in theory, instead of a solid beam you...

I had my friend hold a vacuum hose up to it. Yeah it was loud for a minute, worked for me.

Jeweler's saw FTW.

AFAIK A boost driver outputs more voltage than it has going in, such as the Micro Flex Drive which will output 2-5.5v with 2-5.5v input. Not to revive a dead thread but I so rarely know the answers! :yh:

Well said!

So the light goes in purple and fluoresces red? Isn't that the other end of the spectrum?

Correct, they are tsavorites! I have found that the convenience of Argentium is worth the cost to change over to it entirely. The only problem I have is when I want to antique a ring, its resistant to Jaxx and Liver of Sulfur. Again, I don't know the conductivity of it, but it is supposed to...

Do I smell a silverhost competition?:eg:

Did you chase all of that by hand or was it pre-textured or pressed or what?

That is specifically with Argentium sterling, afaik heating standard sterling is just a weak anneal. OK, gotcha now. I am more than familiar with the process, but currently I don't have a spincaster, kiln, or vacuum and since I don't really have a studio proper I couldn't easily use them...

It is extremely difficult to photograph polished jewelry properly without a reflection-free lighting setup. With a texture like that, polishing smooth isn't even an option. Taking a closer look, I can see it is more veined than dimpled, as earlier pictures portrayed it. I was also trying to...

I'm amazed at the level of technical skill on this board... I am using argentium primarily, but haven't tested its conductivity. I know it is supposed to be less but I figured it couldn't be much, I could be wrong. My studio is currently set up for fabrication. I generally heat-harden before...

I used a Laser Star laser welder for about a year. Stacked-coin style welds of less than a mm in diameter. Then I'd load the program for smoothing that used a lower power, wider beam, and often different ramping. Awesome on platinum, great on gold, great on argentium sterling, but regular...

I know 350mA is way too much, with the driver I have, if you put a diode across the reference/control leads it reduces the output current, resistance/50=% of 350mA output.

Thanks for the quick replies! So what is the second laser I wonder..? I do a lot of work with high power LEDs so I am aware of the need for current regulators (and heat sinks). I have an extra 350mA buckpuck driver with "external dimming" (ctrl/ref) I can throw a resistor on it and bring the...