Hi all! Happy New Year - will read comments later. The beam dump turned out well, but let's make it even better. Does anyone have a good, easy solution for a metal end cap in stead of plastic? I can't weld aluminium - or any metal for that matter... And how do I fix the iris diaphragm to the front of the beam dump in a lighttight way without obstructing its function? Any input is appreciated!

@ishitkashyap

3 жыл бұрын

Happy New Year Ingenious Sir!

@cereal_dispenser

3 жыл бұрын

I am faster than you

@pvic6959

3 жыл бұрын

for your purposes (since its not going to have heavy use, need to be load bearing, etc), I hink super glue or something similar will work. There are metal glues that ive seen that should also handle high heat. you could also try proper sealant, resin, etc. You can make a metal cap and just glue it down using one of those things! I think that should work for your purposes!

@Zi7ar21

3 жыл бұрын

The idea of an aperture sounds smart, I can't wait to see it!

@lucia7131

3 жыл бұрын

Hi! Happy new year!! :)

These lasers are so strong that I feel like I need safety glasses to watch it.

@Boomchacle

3 жыл бұрын

Even though I know it's safe, it is disconcerting to watch the camera get flashed by a laser lol

@calintrifan9507

3 жыл бұрын

ahahagagagagahahahahahahahahahahahahahahahahahahagalolmao

@brainiac75

3 жыл бұрын

The crazy part is that the dot in real life is thousands of times stronger than a normal screen can show :) Thanks for watching!

@brainiac75

3 жыл бұрын

I used my older camera for filming this ;) And zoomed in from far away to lower the light energy entering the camera. Luckily it handled it just fine without burned pixels!

@numero7mojeangering

3 жыл бұрын

Don't worry your are behind a screen, unless your are the camera man

"I will go for round ones. Don't want it to look like something crafted in Minecraft." ~Brainiac 2020

@fizz1ewinks

3 жыл бұрын

Yes

@RoboticNerd

3 жыл бұрын

Not sure why he did that :/

@SG6002

3 жыл бұрын

I was about to type the same😀😀😂

@ApXucBuH

3 жыл бұрын

_Minecraft is liiiiife_ . But not for Brainiac75 (shrugs)

@ronnierascal12

3 жыл бұрын

So funny

"6 inches is handy and adequate"

@darrellw82

3 жыл бұрын

That's what she said.

@codehawkofficial

3 жыл бұрын

The only thing I am proud of

@WormholeJim

3 жыл бұрын

1 meter would be optimum, though, but also too cumbersome to handle, so yeah. Overall I agree.

@dan2800

3 жыл бұрын

Oh yea sound adequate na max size

@boredok6664

3 жыл бұрын

I am worthy

Thief: *breaks into brainiac’s house* Brainiac: “Be careful when using high powered lasers and sharp objects”

@warifaifai

3 жыл бұрын

HAHA this one did it!

@DanTDMJace

2 жыл бұрын

He would probably not know anything and hurt himself XD

@carnage8381

2 жыл бұрын

Brainiac is a kid compared to styropyro

@yoinkysploink4801

2 жыл бұрын

@@carnage8381 *blinds thief* “haha alright im already bored!”

@jupiter_ios

2 жыл бұрын

Nach dem Training will Jörg etwas vernünftiges essen

"Be sure not to look directly at laser beam with remaining eye".

@boredok6664

3 жыл бұрын

Remaining

I just bought a 3 watt green laser, and for some reason it seems more dangerous than a gun.

@ZeroMass

3 жыл бұрын

Legit 3w or china spec "3w"?

@aarongreenfield9038

3 жыл бұрын

@@ZeroMass. Legit coherent lab laser module.

@gamemeister27

3 жыл бұрын

A gun only hurts what you point it at. A 3w laser can bounce off something and blind an unintended target instantly

@ZeroMass

3 жыл бұрын

@@aarongreenfield9038 I'm assuming 532 and not 520nm... Nice 🤤 I build array handhelds at 10W+... Simply looking at the dot can cause damage, class 4 are no joke. Been building all sorts since 2007 and store them like a firearm, including the smaller 3b's 💥

@aarongreenfield9038

3 жыл бұрын

@@ZeroMass. Yea, I won't mess around with it unless have the reds on. I also have a one watt argon: (It's hard to explain how inefficient that one is lol) and a 1064nm yag that doesn't mess around. I have many more in between, but these are the standout ones worth mentioning.

"diffuser".... hmm it sure looks like something else LOL

@junatah5903

3 жыл бұрын

Yeah I too thought it looked like a pyramid...

@RoleplayHost

3 жыл бұрын

ouch

@albertc4374

3 жыл бұрын

I'm glad to realize that I'm not alone

@RoleplayHost

3 жыл бұрын

@@The___Lamb there are no direct references to what we are talking about, so it doesn't matter - whoever gets it gets it, and if a child understands, we know it's not because of us, but more unfortunate circumstances

@tesafilmrollelol2806

3 жыл бұрын

Pointy egg on a stick

I'm interested in seeing your beam trap operating with a thermal probe attached, so we can get an idea of how much energy it's converting to heat.

@thomasmaughan4798

2 жыл бұрын

All of it. Thus, a 3 watt laser will experience 3 watts of heating. That's not much unless highly concentrated on a tiny spot. But spread out by the plumb bob, it will be just 3 watts of heating; barely detectable.

Ah, a fresh video from my favorite laser expert! also a "beam dump" sounds pretty funny yet cool

@dankhalifa6937

3 жыл бұрын

hey subscribe for no reason!:)

@brainiac75

3 жыл бұрын

Yeah, I think many would call this a beam stop to avoid the giggles associated with the word 'dump' x) Thanks for watching!

@pvic6959

3 жыл бұрын

@@brainiac75 oh wow I got a response! Honestly, I think I like this better. It allows you to have a little fun while being serious :) Thanks for the videos!!

I love it how you're stressing safety in every Video, but also doing it in an educating and interesting way! Have a great 2021!

Drilling tip: You should have a separate drill bit set for plastics. Just take the cheapest set (or an old one) and dull the bits with a file. They will not catch the plastic and spin it around any more nearly as easily.

@thatoldme1234

2 жыл бұрын

Wood bits and forstner bits work really good for plastic too

@thatoldme1234

2 жыл бұрын

And there was a mistake wih the gold color. Normal HSS and HSSE (the one with Cobalt in it) don't apeare visualy different. The color is caused by a Titanium aluminium nitrite (TiAlNi) coating whitch makes it more durable.

The main cone is the only thing that really needs to be heat resistant, I wonder if using black 3.0(with a black 2.0 primer coat) on the inside would help absorb more of the light.

@precumming

Жыл бұрын

Not necessarily, if the laser doesn't hit the tip it will spread out somewhat but it will still focus on a smallish area, however that area is only at the back and you would be able to use black 3.0 forward of the furthest forward a reflection from the cone will reach the wall to catch tertiary reflections

Instead of using black paint you can coat the inner surface with soot/carbon from burning candle or kerosene etc. The amorphous surface is similar, but not as good as vantablack which will significantly reduce the reflections and make the beam dump even better. PS: Happy new year!

3:10 Drilling plastic with cobalt bit, Eating soup with tungsten spoon, Hunting squirrels with a Schwerer Gustav... No matter how it comes, overkill is always fun !

@Grocel512

3 жыл бұрын

Bringing up an AK47 to a knife fight.

@dominikklein4282

3 жыл бұрын

Squirrel Hunting with the Schwerer Gustav must be a fun experience!

Dont try this at home But try this at school

@Mister_A03

3 жыл бұрын

Americans and guns be like

@graybeard7605

3 жыл бұрын

Lol I’m gonna burn down the school

After that plumb bob and bolt atached to the end were painted black i had a very different idea of what it looked like haha.

Thank you for sharing your solutions. This helps hit home the importance of having safety measures in place.

Great video, I loved watching the build and test. I had no clue such a thing existed, it really does seem like a smart idea. Happy new year!

Making a neat project out of a safety device makes me even likelier to stress safe use. A good last day of 2020.

It's not only cost effective to build your own things/equipment but you have the satisfaction of knowing *you* made it. :3

@brainiac75

3 жыл бұрын

Yep, that feeling is priceless. And if it breaks you know exactly how to repair/replace it at low cost :)

For not being a craftsman, you did a great job! Always good to use a guide when cutting metal. Don't be afraid to cut plastic with low pressure and slow speed!

I have done A LOT of spray painting in my life, and one thing that makes the biggest difference in the end result is the cap. You can buy different caps with different spray patterns from graffiti and art supply stores. Some spray larger spots, some spray tiny spots, some spray straight lines (calligraphy cap). You can buy adapters to use them on male spray cans (the cap goes on a stem) to adapt it to the standard caps (the stem is part of the cap). Bombing Science is a good site if you're in Canada, or Art Primo in the US. Small, detailed jobs like spraying the inside of that pipe, would be a LOT easier if you used a fine cap.

7:07 Oh yeah... that's the shot right there... unf It's quite satisfying to watch the beam disappear into that little box

I reckon some baffles on the inside would improve this even more.

@camerondrew9402

3 жыл бұрын

I thought the feet were baffles before he applied them!

@brainiac75

3 жыл бұрын

Yep, I have seen professional models with an extra, hollow cone on the inside in front of the diffuser. Would trap even more light. I may need to experiment further, though it really isn't needed for my laser's power level. For now...

@livedandletdie

3 жыл бұрын

@@brainiac75 I mean, I don't think you'll need to deal with daW or stronger Lasers... Am I weird for using Dekawatts Or Hektowatts? Does anyone younger than me even know those SI units... have they even heard of Dekagrams and Hektograms before? Have they heard of decigram then?

@xavier6130

3 жыл бұрын

yeah, like a hectogram is 100 grams

A new years treat! Great, and very interesting video thanks Brainiac, happy new year!

Hello. I am a moderator on laserpointerforums. I thank you for giving member Clansley a shoutout for his information.

That's pretty ingenious. Very nice.

XTC is a high temperature/heat resistant coating formulated specifically to protect metal surfaces operating at temperatures from 500°F (260°C) to 1500°F (812°C). With proper preparation, XTC provides outstanding adhesion, film integrity, weathering, and thermal shock-resistance throughout this entire temperature range, and is guaranteed not to burn off!

I've had to align laser beams many many times. One time, I made the mistake of using my hand as a beam dump for a 200mW 532nm laser. It burnt a small blister into my hand. We had a lab where there were burn marks on the wall from someone using a 2W IR laser without a beam dump. A piece of black anodized aluminum makes a good beam dump.

@pentachronic

3 жыл бұрын

The razor blade test is normal for seeing laser power.

I really love your amazing music selection! Keep up the work!

This was ridiculously informative. Thanks a bunch!

Brilliant video !

Ich mag sehr, wie du am Anfang gewisse Vorsichtsmaßnahmen erwähnst. Ein sehr tolles Intro, was du dir da ausgedacht hast :)

A revisit to the lanthanide series would be great. The elements along with their chemistry is fascinating!

Well done 👍

wooo that black paint looks really really nice.

Fascinating video, new subscriber because of it!! Keep up the good work!!

Nice one, very informative.

happy new year brainiac75

@randomperson1418

3 жыл бұрын

holy 0 likes but brainiac liked it :O

Well, that is effective. I need to build on of those.

Hello from the UK from a fellow science fan & laser builder. Great project Brainiac75, i built you project to your method & specification & made 2 small modifications, i extracted the variable aperture assembly from an old film camera & mounted it to the front of the beam trap using a piece of 5mm black ABS plastic with a circle cut out of it to fit the aperture mechanism into snugly,i then used some fast cure resin to fix permanently in place, i found some small adjustable height rubber bottom feet on screws with plates on the top that had self adhesive pads on ebay that gave me a professional quality beam trap i could use at any distance & beam divergence combination that was an adjustable height. Keep up the great videos.

@brainiac75

3 жыл бұрын

Great tips. The variable iris is already on its way (as mentioned at the end of the video). The variable height feet are a nice touch. Thanks for watching!

You could even add a series of square aluminum plates with apatures to the inside to reduces the lights ability to bounce all the way back to the front. Maybe cut them like a + sign and bend the tabs at a 90°angle, then use high temperature adhesive to hold them in place.

Happy New Year to you too!!!

Brilliant work from the brilliant brainiac

3:29 Beautifully expressed. I know the feeling : )

6:46 The paint finish looks very good!

Very informative video. Keep on with the great content.

mans was so happy to talk about his drill bits, there pretty neat not going to lie

I've got psychosomatic spots on my vision from looking at all those lasers now

It is amazing that EM waves, RF or light can be terminated by similar devises. I had a few microwave terminations that had a conical graphite center inside a waveguide, just like your beam dump, altho, I would call it a termination as well.

very nice!

Happy New Year 🎉🥂🍾 Great vid as always 👍

"Don't want it to look like something crafted in Minecraft" Me crafting this item in Minecraft: *Slowly puts down materials*

Happy new year brother

I was waiting for this video

I like that vice you used for holding that aluminium for cutting it.

Happy new year ❤️

You should start a spray pass from off target while constantly moving the can sideways until it’s again completely away, so to let large blobs goes to backstop. Not always happen but sucks when it does

Hi Brainiac75, Good Video, Keep It up!

Endnu engang en fantastisk video !!

Have a great 2021! I'll love to see more og your videos! Subscribed to you since 500 Subs.

@brainiac75

3 жыл бұрын

Wow, that's a long time ago. A decade or so ;) Thanks for the long time support - much more to come!

A great contraption; I would have also sprayed the entirety of the front plastic with the aperture just so it was matte black too, probably absorb alit more light inside and out

I love watching your videos 😍

First video I watch in the new year. Happy new year to everybody in the comments!

i love how in some videos he turns the safety signs

Happy Newyear

now I know how a beam stop works. thank you

For what it’s worth- I’m a grad student in an optics lab and we use small beam blocks that are essentially stacked razor blades as our beam blocks. They work quite well on our class 4 lasers and are pretty cheap, around $50 usd. Thorlabs part LB1 if anyone is interested.

Looks like aperture science!

Godt nytår

So basically what I'm getting from this is that you can make your own with a buttplug and the cardboard insert from some toilet roll.

@guitarheromoose8445

2 жыл бұрын

Yes.

@HazelSkies

2 жыл бұрын

*n o*

I love how you mentioned Minecraft in this video, also nice laser!

I learned about laser safety and beam dumps from you. Then I saw backyard scientist working with that absurdly powerful IR laser without much safety at all. I was so nervous watching that. 😂

Love your videos so creative and amazing big fan ❤

*struggles the whole video building the laser trap* 10:35 "...and it was an easy build!" haha LOVE your content!

Nice vid

styropyro be like : 👁️👄👁️

@Matt_10203

3 жыл бұрын

Safety? What's Safety?

Good going! It's crazy how much spillage even the nice lasers have!

@brainiac75

3 жыл бұрын

Thanks! I was surprised too. The spillage usually 'drowns' near the laser dot. But it is after all not overexposing the camera, so probably not much energy in it. Though I have noted higher power readings when the laser is nearer the laser power meter. Probably because the spillage is picked up too. Thanks for watching!

@snigwithasword1284

3 жыл бұрын

@@brainiac75 Ah, super cool! I'm sure that spillage adds up! I wonder if you built some funky funnel mirror to better capture that spillage if you would capture 5.. maybe even 15% extra power measured?? ..It's so hard to guesstimate living with logarithmic eyeballs and then fudging for sort-of linear cameras!

4:19

@analkalinne

3 жыл бұрын

Ya dirty boi ( ͡° ͜ʖ ͡°)

Very nice. Been wondering what would be an easy way to do this... Eventually black tape and paint on flat surfaces indeed just isn't enough. Simple and effective. Much thanks.

A simple Raman Horn design is much simpler and works in all but the most extreme cases. Just bend some anodized conduit with crimp at the end or sheet metal that has been folded in half. The beam is diffused and attenuated at each bounce and the horn shape ensures that it propogates into the horn.

This makes me want to use strong lasers more with this.

Happy new year Brainiac viewers🎆

The easier way. Take an empty aluminium can. Add a little sand. Plug hole and shake. (Aiming to roughen the inside bottom) Tip can on side. add a little black paint while the can is on side or nearly so. (can should be nearly empty.) Roll can along flat surface for several revolutions) Tip out excess paint.

@zinobi

3 жыл бұрын

It won't look as good and I would be super paraonoid about accidentally puncturing the can but that does sound quick and easy and like it should work fine.

@brainiac75

3 жыл бұрын

Good tip. Better than just randomly pointing a high-powered laser at a wall or furniture as so often seen... ;)

Rustoleum's high temp black is also good paint, applies very thinly, comes out matt, and is very hard wearing

Clever. Another approach is a stack of double-edged razor blades with the sharp edges facing the laser.

I like how've you've addressed your patreon

This Video saved ~$100!!

I bought a "200" mw laser off ebay, but the PSU alone was a mains powered one and it even had TEC cooling, looking at your channel and just how powerful it was I suspect it was more likely to have been a 1000 mw laser which explained why it absolutely destroyed the blast plastic I had bought it to engrave

If you need a quick and dirty way of achieving a similar result you can get a stack of utility blades and glue them together. Then simply pass them over a candle to accumulate soot and viola! works extremely well.

Try to paint the inside and out side with muso black. With muso black absorbs aprox 90-99% of light, the beam dump will be super effective and with the addon of a cone in place of the eyeris no light will bounce. You can also and some texture on the inside to trap some more light

Happy new year. Try using an adjustable aperture.

I think every man can understand that shot of him opening his beautiful drill and tap set

One improvement could be to use the black 2.0 brand paint (similar to vantiblack) but andvery light absorbent and will withstand the heat I’ve seen it done in something similar before.

Nordisk Kabel og Trådfabrikker, perfekt!

Since the innards are basically enclosed and won't ever be touched. Once you figure out an all metal design Instead of painting the innards with black paint, try exposing them to a poorly burning kerosene flame. The flame will deposit a VERY black layer of soot that will be perfectly matt. It probably isn't as black as vanta black (though since it is basically the same material it is probably close) but it is blacker than any paint can be, it's super cheap and should be fairly heat resistant. Also, thought this would be hard to do with stock parts, having the aperture be a steep cone leading into the hole in the center will reduce the risk of the beam reflecting back at you (as opposed to the aperture being a flat wall with a hole in the center) as you are lining up your beam with the hole.

Love that Glean music on 08:21! =)

Covering the inside of the tube with baffles would be even more effective. In addition, covering everything inside with soot. Opening hole would be almost a perfect black body.

Your paint preparation is entirely appropriate, and is exactly what I would recommend.

@brainiac75

3 жыл бұрын

Glad to hear. Did consider some etching primer for aluminium, but the Rustoleum seems to be very forgiving ;) Thanks for watching!

@superdupergrover9857

3 жыл бұрын

@@brainiac75 In theory that would have been best, but adhesion isn't a problem in this application. More work than what it is worth. Also, if you have any problems with the paint burning through, (i don't think you will) look for a paint designed for car exhaust manifolds. In the US it is called "header paint" and is commonly available in auto parts stores. It is only about twice as expensive as what you used but can handle higher temperatures, over 1000C.