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That was one of the options I considered but the motor assembly is enormous....so I have used one of these...:whistle: The orange bit at the back is a power driven tape measure. Regards rog8811

The idea has been buzzing around in my head for some time that I wanted to make a light saber using lasers. I also wanted it to have an adjustable length blade that fully retracts. I have now built a proof of concept model using 3 5mw greenies, I took a movie of it with a bit of smoke...

I thought you must be in a time warp;) Regards rog8811

I said You said I now say Where did I say anything about metal? Laserbee said I say.... DITTO! ;) Regards rog8811

That black laser I posted a photo of earlier has lit matches, burst balloons and engraved stuff....I have never charged the batteries.... It isn't as if you have to do it every 5 minutes. Regards rog8811

It is ths bit between the spring and the chrome focus bezel in your photo, the lens nut, the plastic bit that holds the lens with the thread on the outside. Regards rog8811

If you can use a 10ohm or 100ohm before considering a 1k... If they are not close tolerance, lets say 2%. A 1k could be 20ohms out (unlikely) a 10ohm would only be 0.2ohms out All that said if the 1k is all you can get use it and multiply the meter reading by 1000 Regards rog8811

Like this.... Regards rog8811

I have a number of LM317 builds with blu-rays, I use one of those holders I mentioned to get the voltage should I want to burn....I have no photo's of the build but this is my host. Regards rog8811 Edit, just found a picture of the holder... I see DX is still down but should it return this...

A 3X AAA holder will take 3X 10440's = 10.5v ;) Regards rog8811

What host is it? Can you fit one of the 3 X AAA holders in it? that would work. Regards rog8811

That is experimentation for you...:) I am sure you will find a use for the PS3 sled.....like another 7 colour laser;) Regards rog8811

The only reason I didn't try the PHR one is that I chipped it badly removing it so the PS3 was the only other one I had to hand, good news that it works well enough to use as PS3's are getting hard to find at a reasonable price these days. When I put this build onto my site I will use some of...

Did you find anything? regards rog8811

..... oh dear, another lost soul, we are all doomed to be poor but we have some cool toys.:) Welcome to the forum Regards rog8811

I missed the bit where we changed from 400ma to 3kva, I will get my coat.... Regards rog8811

18 months ago we were all amazed by 20mw Blu-rays as they were the only way of getting somewhere near to blue, I still use my first one daily for presentations and still think it cool, but these days they have been replaced with ones capable of 500mw... how times change:) Enjoy it for what it...

2 diodes surely for half wave rectification.... 4 diodes for full rectification.... you should be able to use 1N4001 diodes as we all have loads of them:) Regards rog8811 EDIT, as you were, I have just done some reading you can do it with one diode....Sorry ;)

I cannot be sure of it being 100% but it is designed for blu-ray and red so it must be pretty good. Have you tried green through the SF-AW210 dichro? Regards rog8811

As I said, I didn't know the time line to this... I agree, he should have got back to you. Regards rog8811