Don't use strong lasers without this - easy to make!
Added 2020-12-31 18:48:28 +0000 UTCFinal video of 2020! A special one where I try some DIY when building and testing a beam dump.
A device that is strongly recommended if you regularly use class IV or even class IIIb lasers. Kind of embarrassing I haven't had one until now...
I thought this would be a quick video to make and give me some time off in December.
Well, I was wrong. Building something WHILE filming takes ten times as long. And try counting the number of video clips and editing cuts in this video...
Hope you enjoy it even though my channel is not really a DIY one.
Happy New Year! Thanks for the overwhelming support in 2020. See you in 2021.
Comments
Me too, but it's impossible to get and I don't want to know about the price. I also have a feeling that the carbon nanotubes would be blown off by the intensity of strong lasers x)
2021-01-26 21:34:17 +0000 UTCI would like to see the beam dump colored with Vantablack :P
2021-01-25 23:13:13 +0000 UTCHi, I bought mine here: https://www.ebay.com/itm/Powerful-635-638nm-Focusable-Waterproof-Orange-Red-Laser-Pointer-Torch-638T-500/113459622691 Sold as <5 mW, labelled as <500 mW (may get seized by US customs?) but mine is over 700 mW... The beam quality just is horrible as mentioned. Even the simplest key chain red laser has better beam properties :)
2021-01-01 13:49:47 +0000 UTCWhere could some one find a red laser like that one? I’ve tried google but no luck.
2021-01-01 09:09:14 +0000 UTCoooh, just had a thought, possibly fuelled by new year beer, but bear with me! If you sprayed the inside with paint again, put in a handful of dry sand (just any old sand, dry it in the oven, even salt might work!), turn it round and round so the sand gets stuck in all the paint, let it dry, then give it another spray of black paint to cover the sand, do you think that would make a good dispersing surface?
TechieSteve
2021-01-01 02:58:35 +0000 UTCHappy new year to you too! Very good result! You could reduce the inner glow with some baffles inside. You could drill a centre hole in a few of the spare end caps you have, trim off the excess overlap plastic and push them inside, but you'll probably need to protect them with metal as you did with the front to save them from a direct hit from a misalignment of your larger lasers. I did a similar thing with some cheap photographic lens extensions and it improved contrast no end. I wonder, is that black anti-static foam material ICs arrive in non-flammable? If so, some of that on the inside walls would kill the reflections perfectly.
TechieSteve
2021-01-01 02:37:35 +0000 UTC
