Hello bit biters! Well, in part one of my investigations We’re trying to find a no-mess way to retrobite a computer without dismantling it into tiny pieces And we made some pretty interesting discoveries but no huge successes with that ozone method But oh, how the tables have turned! No.. no, they haven’t turned yellow And I just can’t wait to share an incredible discovery with you That I’m gonna call Lightbrighting Now, I’m ready to enlighten you.. now So, welcome back to Retrobrighting Recipes! Now as well as continuing to work with Groggle Bob from part one In this video I’ve also been working with Dr. Richard Blair, PhD From the research faculty in the Florida Space Institute. And Dr. James Pickett, PhD Yeah, it’s a paradox Well, he’s the chemist who’s worked for Plastic Polymer Degradation issues for GE Global Research since the 80’s Until recently… talk about retro.. But before I share the mind-blowing discovery with you We should first quickly address some of the other ideas that came from you guys, after the last video Number 1 As to why the 7-Bit Guy got results with ozone and I didn’t in identical test It was pointed out that Texas is more humid than California And indeed humidity can help catalyze that reaction In theory, we could add a fine water mister and get better results Or a water misses… equal rights Number 2 We could try Sterile Hydrogen Peroxide Gas Plasma Machine And just put the computer in there And they’re pretty cheap Only $5,000 to $8,000, actually So, I’ve ordered seven of them No, seriously though, I haven’t … ..because they would likely cause the same damaging oxidation that broke my Macintosh drive gear Oh, geez! No, make it stop! But it might effectively give us a ready-made air brightening machine Number 3. Someone also pointed out that many hair dryers produce ozone They include ozone generators And they’re usually called ionic And they could provide both heat and ozone in one Though still, we’re left with the issue of oxidation of the electronics inside Number 4 There was my theory that the $8 Guy’s dollar coins Placed in his bag, might have helped catalyze things And it was pointed out by someone that copper is used as a catalyst In some cases for organic synthesis And you know plastic is an organic Carbon containing compound So, an ozone reaction might be catalyzed by the presence of copper coins in the bag with the ozone Hm.. And 5 By far the most common suggestion was to put the ozone generator inside the bag So it would concentrate its own ozone I’ve tried this for 24 hours, at room temperature, to no avail Maybe with heat and humidity and coins, it would go better But again, it doesn’t really solve that problem of oxidizing the delicate electronics But one thing does Stefan Aquila directed me to a thread on a German forum called Forum64.de Now, I had a lot of trouble understanding the discussion My German isn’t really so good Even if I do do an okay Jan Beta impersonation (Jan Beta voice) Hi! It’s Jan Beta! And Google Translate wasn’t really much help either But one thing I did understand, were their pictures A huge thanks to Superingo for sharing them with us here And the method seems simple, you know Almost too simple They just put the computers outside in the Sun And that’s it No, seriously. That’s it. I couldn’t find in the forum or understand a real hypothesis of why this might work And even the 8-bit Governor agreed, it make no sense But I did at least give it a go And one thing I did understand was that they mentioned how bones are not really white in real life Wel.. not alive. Yeah, but if you leave them in the desert They do bleach bright white And then one who spoke patio furniture outside Or left the towel in the sun for a few weeks, we’ve seen that bleaching effect of the sun Even your hair can go bleach blonde in the sun But in either case, it takes weeks or months Well, anyway, I placed these items outside on what was a very overcast day, here in California The high was freezing 20 degrees Celsius. That’s .. double it and add 30.. Yes, 70 Fahrenheit Well, Dr. Richard Blair also put a cloth over half of his Windbest keyboard, on the same day We both tried our experiments And when I brought them in at night and looked at them inside I couldn’t believe my ears.. eyes.. sorry But while I was in shock, you know, they showed a genuine lightening In one day! Even that ski-mask yellowing around the Macintosh screen where it had had a Polaroid filter on it Was noticeably less Stark Oh.. Tony Stark Ah.. Arya Stark! Well, the Omnibot was also a little whiter particularly at the bottom where had been facing upwards And the Amiga 2000 keyboard In honor of Commodore who went out of business 25 years ago this week It too looked lighter And you can clearly see where the cloth was on the Windbest keyboard What hadn’t changed was that Amiga 500 keyboard But that was an extreme case. But yeah, generally the results were really mind-blowing I also engaged a small army of my Patrons to run their own tests at home over just one day Here are the before and after photos And it’s clear to see a definite lightening effect after just a few hours and often on overcast cloudy days Mattsoft also shared with me a one-week test he did By placing a strip of tape over the case And that Commodore 128 came noticeably lighter around the tape And Xavier Bell also tried using a sunbed However, I couldn’t see any results And really nothing can match the solar power of the Sun In a moment, I’ll take you through our hypothesis of what we think is going on here After all if Sun makes plastics yellow How can Sun make plastics Deyellow, right? Right. But first speaking of that A500 keyboard Let’s run some very quick tests Firstly, let’s melt some of the keys with a hot air gun to test that theory that heat can also yellow plastics Because we’ve all heard stories of computers that have yellowed from just being in a dark stuffy attic With no un Casualties of war here And look at that The melted key on the left is noticeably darker than the ones next to it So that reaction I explained in the first video is definitely sped up by heat alone Even devoid of UV So that tells us heat is a factor in yellowing Not just sunlight And sunlight is what we’re using to Deyellow here Next, someone asked how deep the yellowing is And that’s another good question Dr. Pickett actually suggested we try a headlamp deyellowing polish I’ve never heard of that before but my fear is it will rub away logos or key lettering But he coinvented the yellowing coating used on many modern car headlights today I think it’s worth trying I did find these at my local auto parts store And sure enough, they mentioned the deyellowing Now, I don’t really have time to do a full investigation in this video But let me know if you give it a go I’ll put a link in the description below to this product and all the recipe ingredients that you need from today’s menu Interesting that these things come with UV blocking wipes Which, gave me an idea More on that in a moment I’ll also put a link, below by the way, for the Lightbrighting Turntable, as I’m’ calling it Perrfect to ensure even distribution of the sun’s deyellowing effect See I told you the tables are turned! But let’s test how deep the yellowing goes on those donor keys ..to see if the polish is likely to work And don’t worry, we’ll refurbish this key in a future episode As we can see the yellowing is really superficial In fact, Dr. Pickett says UV damage will usually be confined to the top 35 µM of the surface But lets sand away a rarely light layer Wow! So, It’s quite possible that headlight deyellowing polish would work wonders In some cases .. oh, keys.. or cases Alright, so back outside to the mind-blowing experiment And let’s look at some before and after photos, after three days Even if one of them was rainy You remember Dr. Blair’s cloth test? Well, I asked him to keep trying on successive days And he moved the cloth over an inch each time This gives us a nice scientific depiction of what’s going on each day And he moved it over again for day three And now we have a tritone gradient showing the cumulative lightbrighting effect If we just enhanced the contrast, you can really see what’s happening to the plastic Now, I’m first to admit that this method is slower than using bleach But as a result is also less destructive And because you don’t have to rely on buying bottles or putting things in one table at a time You can put your whole collection out at once Albeit, for several days You know, as these things took 10, 20, 30 years to yellow What’s a week or two, really? And even that stubborn A500 keyboard looks a little bit lighter Interestingly, also those number keys that I’d melted and darkened Responded even faster to the lightening And my amstrad PCW was even more interesting You can see the original case color under what used to be an Apple sticker And then the yellowing under the rectangle And the lightbrighting effect around the rest of the case Is nearly back to the original color Here’s our hypothesis of what’s going on The new computer with it’s fresh healthy plastic starts its life Well inside your house, usually out of direct blazing sunlight When it yellows over a long period of time, usually many years, sat on a desk, or under a TV, away from the window This means it’s getting three things. It’s getting diffused sunlight Specifically UVA rather than direct windowsill sunlight 2. It’s getting exposure to often fluorescent lighting Which also has a damaging yellowing effect on plastics 3. It’s getting general air oxidation warmth And what we showed with the Melting experiment that warmth is a factor Even low warmth over many years It’s our hypothesis that these three factors together caused the yellowing So if you have an old computer that miraculously hasn’t yellowed I’d be willing to bet money on one or more of those three variables being less in your particular environment fact In fact, I’ll bet some of the 8-Bit Guy’s Coins The second differentiating factor is crucial one Is that, after those years the plastic is in a sensitive highly degraded yellow state Is changed from when you first opened the box and got that distinctive ABS aroma And quite ironically, that sensitivity Makes it sensitive to deyellowing And that might explain why the plastic that we had just melted was more sensitive And therefore more sensitive to that quicker deyellowing that we just saw The Sun gave and the Sun has taken away Blessed be the name of the Sun Steve Jobs 1:21 So how does simply popping it in the garden caused deyellowing? Well, in that instance, instead of diffused in direct sunlight inside the house The sensitive computer plastic is getting bright direct sunlight Even through clouds, it still gets UV And that all happens in a concentrated dose over a few hours, not years Even three days is really just 24 hours of sunlight So put really simply Your hair doesn’t lighten inside your house even on a sunny day But out on the beach hair will degrade and bleach Bleach Beach Even if you don’t have plastic hair like some people Ultraviolet, wave. Yes! It’s a glitch in the plastics matrix Neo So, let’s recap Diffused sunlight through window glass plus fluorescent lighting and warm air, oxidation Over the course of years Causes slow yellowing to that new plastic Conversely, bright direct sunlight in a concentrated dose makes that degraded and sensitive older plastic Receptive to bleaching Well, that’s the incredible discovery And as the why most of us haven’t really realized this till now I didn’t really think that just hardly anybody thought of trying it because At first glance, it just seems so counterintuitive What isn’t counterintuitive? Ordering your PCBs from PCBWay! They offer free worldwide shipping on PCB assembly orders And up to 30% off PCBs right now And as I mentioned, PCB stands for Polymer Carbon Bonds Doesn’t it? So what about downsides? Well, Dr. Pickett, he did some research in some similar areas, not quite the same And that research indicates that the yellowing might return But will never reach its original yellow level You can see here the massive drop in yellowness when exposed to sunlight And a more gradual return But never to its full peak And the more you repeat the process, the more the yellowing stays away I’ll put a link to that similar research paper in the recipe ingredients below And yes, you’ll get similar bleaching results on a windowsill, as long as it’s in direct sunlight Though outdoors is probably just easier And more interesting for your pets But the yellowing that might return can be prevented apparently With exposure to blue light Even standard warm white LED light bulbs contain a decent amount of blue light And more and more houses have windows with you know, UV coatings and LED lighting nowadays Anyway, so this re-yellowing effect might become a thing of the past Literally. In any event, if you’ve Retrobrighted using any method I now recommend changing to LED bulbs in the room where that computer is Once I have the bleaching where I want it I’m also gonna use these UV blocking wipes, similar to the ones we saw earlier, on the plastic Sort of as a sunscreen for computers But for every downside there is the light bright side It doesn’t cause brittleness as fast as the traditional retrobrighting method might At least, that’s our hypothesis You see hydrogen peroxide is likely to penetrate into any uneven cracks Undetectable cracks that might be in the plastic And Dr. Pickett says that would be very bad for the brittleness. Hmm. So there it is Lightbriting Test it out. Let me know. Let Puppyfractic know too – how you get on in the comments below Feel free to share Google photos links or whatever But remember, as with any technique, there are no guarantees it will work the same for you As it has for us.. due to a multitude of different environmental factors Both in what caused your yellowing and this method of fixing it Alright, now huge thanks as well, to the paradox And to Gargle Bob, Superingo, Gaz Marshall, and all my Patreons for their help with this experiment Thank you too if you become a supporter Subscribe or just do any of those small things that helped me keep making these videos for you What do you think of lightbrighting? And our hypothesis and test results? Is this the new light of your life? Or has it just clouded your day? Comment below and Cheerio!