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Boy! My mechanical room is a mess! I've never been more proud. A year ago, I bought my kids

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a 3D printer for Christmas, and it was one of my most devious parenting maneuvers yet.

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See, they thought I was giving them the means to make toys and fidget gadgets, but what

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I was actually giving them was some motivation to learn a little bit about 3D printing and

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3D modeling, which I hoped would serve as a catalyst to getting them a little bit more

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curious about the technology around them and how it actually works. But it has gone so

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far beyond that. I've been selling 3D printed fidgets to classmates. I went to the Entrepreneur

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Fair last week at school and made 200 bucks, which puts my total at 500 now. Even the teachers

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are apparently getting in on the action. These are apparently super popular with the adults.

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This is your number one seller right now, right? Easily number one seller.

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Naturally, when I learned that the storm that hit our mechanical room was an entrepreneurial

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hurricane, the first thing I did was bring home some idle 3D printers and the PrusaCore

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one that Joseph, I call him Joseph.

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Hmm, are we actually Matt?

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Sent over for evaluation. Unfortunately, the second thing I didn't do is organize our

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newly planted print farm. And we have learned extremely quickly that scaling up takes more

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than just printers. We have got to fix this. And there's no time to lose, because next

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week is round two of the Entrepreneur Fair, and Randy here sold almost all of the inventory

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that he prepared for the first one, just like Colton's team sold this segue to our sponsor.

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Dad, we're out of red filament again. Okay, we could talk about filament later, because first, there are a lot of things to

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address here. Some of them are obvious at the surface, like the total lack of organization

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of our workspace, but some of them are a little deeper, like the destroyed printhead on our

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OG machine, this bamboo P1S.

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That wasn't my fault. That was my sister's. Well, let's start by fixing that. As something of a 3D printing novice, hot ends are something

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I don't really know a ton about, and it's a surprisingly deep topic. We might need a

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bit of help. You laid out your requirements, and I chose BQ's Panda Revo hotend with a mix of brass

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and obsidian nozzles and in a variety of nozzle sizes. These are going to help you change your

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nozzles really fast, and obsidian is great for abrasive materials. Your Core 1 doesn't

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really need this, because it's got a pretty good system already. You just kind of loosen two screws.

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This sounds amazing. Just one question. Who the heck are you?

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I'm Sean. I worked for a couple 3D printer manufacturers. My last job was as an editor

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at a 3D printing publication, and I work here now. You know me. You drilled me on Star Wars

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a couple of days ago. Cool. This has been out of commission for almost two weeks. What did you guys do to

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it? Like you got a whole bunch of filament on it, and then when you were trying to remove

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it with a torch, you like killed it? Yeah, somehow. We melted the temperature probe by accident.

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Okay. Let's go ahead and throw the new one on. Theoretically, this is as simple as just

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propping it on there, and then we're good to go. Oh, wow. Is it really that easy? Are

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you sure you don't want to put the fan on first? Yeah, we should probably do that.

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Okay. And we should probably call out the precision screwdriver from LTTstore.com. Great

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for these types of jobs. I don't know how he managed to drop the screw, because it's

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magnetic, but like father, like son, I guess. Also, we've got new sizes now. So we've got

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the obsidians in .4 and .6, and we got a brass nozzle, not just in .4, but also .25. So if

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you wanted to print finer stuff on this one, then you could. It'll take longer, but if

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people are willing to pay a little bit more for a finer print, then hey.

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Who cares? Yeah, exactly. Can I see? Yeah, just needs man strength, or rather just needs being willing

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to force things a little bit. It's good. I don't want to break the new nozzle.

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Yeah, I don't want to break the new nozzle either. These are way more expensive than

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our old ones. The obsidians are like twice the price of a brass nozzle.

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How much are they? Around $75. $75 per nozzle?

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Wow. So the deal we have with him, and the girls for that matter, is we have no problem encouraging

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their entrepreneurship. We're willing to provide the equipment, but consumables, they need

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to reimburse us for. And I haven't figured out where hot ends figure into this.

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I'm on the side of equipment. Yeah, you would be.

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Oh, now's a good time to mention that we got some new desiccant that you can put in your AMS.

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Finally got better desiccants. These are the silica gel desiccant packs from Wise Dry, and they are rechargeable,

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which means that they'll change color when they're too wet, and then you can put them

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in a microwave, a stove, or just your filament dryer to recharge them and put them back in.

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That's great. I hate low quality desiccants. You're going to want to take these out, and you're going to want to open that and take

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out the desiccant that's already in there.

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Great. And that's probably old. It feels moist. Yeah.

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Oh, wild. This is way more than I need. Yes, but it's great that you can put these packs in your vacuum sealed bags, and that's

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going to help keep the filament dry while you're storing it. What the Sam heck happened here? You left it loaded with red, but you took the red spool

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out. Yeah, because I needed the red.

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I noticed, by the way, that you only caught me for the weight of your finished prints.

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Yeah. What happens to all of this? I don't know.

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Want to go ahead and fire up a test print? Sure. Just don't forget we have a 0.6 millimeter nozzle in there now.

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Other than that, the obsidians, obsidians, however you pronounce them, they're drop-in

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replacements. There's not going to be a preset for obsidian nozzles.

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I would stick with E3D's high flow profiles.

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The thing to keep in mind is when you're using a bigger nozzle, you may need more heat to

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make sure that it gets through the entire thing, but there's a pretty good melt zone

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on these nozzles, so you should be fine for 0.6.

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Now let's go ahead and print a Benchy. Oh, after calibrating.

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Oh. 26 minutes. You know what?

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That's a perfect time for us to do something about the state of this room. Oh, you thought it was just all fun and games upgrading your 3D printers today?

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Yeah. So making space for the PrusaCore 1?

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That was no biggie. I just shoved this guy over and then plonked it on there.

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When logistics offered up these three bamboo X1C's that we retired from our print farm

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at the office in favor of more Prusas, there was no plan.

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Okay. Wait, why am I doing this?

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Kids! Guess who got a special assignment?

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Me. Both of you, you're both right. Time to clean this place up.

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I want all of the garbage dealt with and anything that isn't garbage I would like organized

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in a nice tidy little pile. Why don't we put it in this toolbox that Randy made?

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Okay. Chop chop. While the kids are working on that, Sean and I have a few things to deal with too.

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We've got to build this shelf and I've got to get all of my camping stuff out of this

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story term. If you're going to take the printers out, then what are you going to put in here?

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I'm going to put a big battery that keeps our house powered in power outages.

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Our test print failed. It doesn't know what filament to use.

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Oh, you know what? Honestly, that's probably fine. Why don't we just move this out first and then we'll do the test print out there?

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Oh, this is cool. Thanks to the power of our magnetic cable management, it's just one cord.

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See? Using our power bar holders like that, using our arches like that.

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Good stuff. LTTstore.com. All right.

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Let's go, boy. Oh, hold on. We're not clearing the door.

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We're like a BC trucker. A little bit of local humor for you.

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This space is not as big as I thought.

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Well, you're going to use the space. What do you think we should do?

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Have just two racks, one here, one there, or whatever.

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We'll make our best effort to line up all the printers on this rack and then along this

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wall right here. And then this shelf, I want you to organize all the filament, tools, desiccant, consumables

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as best you can. Now, before we put any printers on to here, there is something that I wanted to do first

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and that is put some of this MDF on here.

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All right, shelves are in place. Time to find out if we can get all three of the X1Cs on here.

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I kind of doubt it. For each 15 and a half inches in this shelf is like 46, so it might be hanging off, but

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it's okay. How do you want to handle the AMSs?

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Would you rather have one printer that can do many colors or more printers that can

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do a handful of colors? More printers that can do a handful. Oh man, I was afraid you were going to say that.

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Now let's just make sure they all fit on the shelf and a one and a two.

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We're not going to get a third on there, but not with that attitude.

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Oh, did we talk about fumes at all? No, not yet.

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Oh, okay. Do you want to do that? Well, we took this out of your mechanical room, which is a separate environment from

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the rest of your house, right? Yes. Okay.

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And in here, you're not. So we're going to want to put an air purifier in there. It's not a perfect solution.

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You shouldn't use engineering grade materials or ABS, things that have styrene in them.

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PLA, PETG. They're generally considered to be safe.

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Okay. And shout out HouseFresh, who we collaborated with a little while ago.

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I'm going to go to them and I'm going to find an air purifier.

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See? Called it.

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It's definitely going to fit. You know what? You're right.

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That's a good call. They are like practically touching each other.

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Look at this edge. It's like just hanging over it. It's perfect.

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Uh, let's move the AMS's down to the bottom.

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One of the major challenges for me organizing the space was that it has to be children accessible.

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And he's pretty big now, but she's not. So we can't have her changing spools up here.

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Yeah. Okay. Hey, that could work.

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Now everything reaches.

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It's much more organized than before. Actually, that's that. This is way better.

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So then. Oh, dude. No, no.

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Hold on. What was I thinking before? What was I thinking before?

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But. Hello. A boom.

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Oh, yeah.

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Got right there.

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That's the 3D printing space money shot. I'm going to start the test print again.

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Go for it. Something I noticed, you've been printing with your doors closed, right?

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Yeah. Okay. With the bamboo lab machines, bamboo lab recommends that you have the door open and also the top

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if you're doing best practices, but I would at least prop the door open when you're printing

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with PLA. Otherwise it might get too hot inside for that kind of material and you won't get the

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best prints you can. Now's a good time to talk about one of the other challenges that we've had lately too.

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Even on the core one, which has been our most reliable for bed adhesion, we've had

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some pretty spectacular print failures.

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Now print beds are a consumable, but that doesn't mean that the ones that we have are

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bad or broken or anything. They should last a very long time.

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So to avoid this in the future, couple things.

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Make sure you've calibrated your printer recently. These bamboos level themselves with pressure sensors in the bed.

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Next, we need to make sure we're cleaning properly in between prints. Remember how I told you that you could clean them with isopropyl alcohol?

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Yeah. Okay. Turns out that for the textured beds, that's actually not correct.

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Okay. Instead, we want to use a mild detergent and water because that'll help us really get into

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the grooves and make sure that we get any oils or any contaminants off them.

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For smooth beds, we just got a bamboo smooth plate so you can try this out if you want

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a different texture on the bottom of your prints or if you're having adhesion issues.

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Isopropyl, totally fine, but you never want to use it for these.

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These are super tack cool plates. These are super cool and tack.

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The point is neither frayed nor I have tried them before, but in theory, they actually

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allow you to print cooler, which can save you heating time and cooling time, which is

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pretty key because another thing that I don't think you knew is that pulling parts off of

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a hot bed can actually cause the part to warp.

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So we don't want to do that. So now we've got a bunch of extra plates. So what you can do is you can do your print, pull your plate off, print and all, throw a

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clean plate on and start your next print and wait for it to cool down.

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I didn't know you had to let it cool down. I've been taking it off hot in the past either.

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But hey, I mean, we're new to this is how we learn. There are other ways you can improve bed adhesion.

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You can try running five to 10 degrees hotter for your first layers or you could try making

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sure your auxiliary fan is off. Finally, there's good old fashioned glue.

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Another PVP glue acts as a bonding agent for first layers.

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You can use like regular Elmer's glue you get from any store, but I like the 3D printing

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specialized liquid stuff because it makes consistent application easy.

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Glue also makes it easier to take your prints off of a build plate because though it's an

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extra bonding layer, it's also a separate layer from that stiffer surface of the print

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bed. It won't stop severe warping, but it will help those tricky small first layers and tiny

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features. Cool. You don't need to clean after every print.

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I would say clean and reapply every 10 prints or so or just see how a new application works

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if you're having trouble. Perfect. Now it's time to talk about something that bothers me a lot more than it bothers my kids.

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These multi-filament AMS systems, they're super cool for multicolored printing, but

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they waste so much filament.

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The last time that I tested X1C printing with an AMS on its default settings, I printed

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a 125 gram model with three different filaments and it wasted over 500 grams between the tower

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and the purge. Yeah. Now, fortunately, this is tunable.

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The first thing we need to do is turn on long retraction.

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This reduces the amount of the previous filament that gets left in the hot end during a change.

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This is as simple as ticking this checkbox after enabling developer mode in the preferences.

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But wait, there's more. Teaching Tech has a really good guide on reducing purge.

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We're going to have that link down below. But in a nutshell, we're going to be enabling purge into infill, which is exactly what it

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sounds like. And we're also going to be reducing our flushing multiplier.

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This is the big one. See, you might care about the absolute purity of your colors.

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I don't. I'd be fine with, you know, red-ish.

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So what we're going to do is instead of purging this much flipping filament every time we

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change a color, we're going to set it to 0.5. That'll cut our waste more or less than half.

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So you're going to remember how to do all that stuff, right? Yeah.

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Okay, cool. Because if you minimize your waste, you minimize how much you pay me for filament.

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With that out of the way, I think we're pretty well optimized. The mechanical room is clean, and this is a way more comfortable workspace, especially

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if you need access to all the printers. To be clear, there is a lot more that we could do in the future.

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I could maybe move my badmints and stuff, and we could have like a queuing system for

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a filament that's pending drying. We could maybe get some containers instead of using those inconvenient vacuum bags and

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automating print removal. That would be incredible. Do you know you can do that?

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I didn't know that. You can automatically have the print get pulled off the bed, and then you can have it start

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another one for like mass production. Super cool.

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There's various options for that. AutoFarm 3D is an effective one, but is a subscription service.

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Octoprint's continuous printing plug-in is a great alternative. Work with Bamboo Lab, which is part of the reason that we stopped using these at the

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office. Once you figure out like which hotends you like, we could potentially explore getting

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some different hotends for the carbons as well. So like higher flow, or harder nozzles to enable more materials, all that kind of stuff.

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That's cool. Yeah, don't sound too grateful.

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Just like I'm not going to sound too grateful to our sponsor.

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If you guys enjoyed this video, why not check out the one where I showed off my 3D printing

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setup? Mine kind of sucked, but we collaborated with some other really incredible creators who

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showed off their setups that are a lot better.