printrbot

@hunterlanier Cool. But school of hard knocks teaches harder. There will be crashes and broken things- part of it. I wish the simulator would let you screw up and explode on screen, or charge you $50 automatically for breaking a bit. That would learn you. ;)

Some might look down on the paranoia but I think it might be a good idea to learn how to cnc parts before I buy a cnc

@AzzyDesignWorks @crazybirdredux The good old days ;) all my best! -Brook

My first printer was a @printrbot that I upgraded to an XL. Plywood, zip ties, and fishing line. Glorious times. I still have a functional print from it! Even used to make a plexiglass bed for them that didnt need tape, since the etched pattern gave just enough bite (and gave a cool pattern on the bottom like @emberprototypes plates)

The days of laser cut plywood printers were simpler, yet frustrating times.

@MaxLobovsky Well done, Max. Well done.

13 years ago, 3D Systems sued Formlabs for patent infringement.  (Before we shipped a single unit -- literally based on a Kickstarter video!) Today, Formlabs gross profit exceeds 3D Systems. How: we focused on building stuff that people want to buy.

@JessePeltan Is there a 3d printer slicer that will an stl for a polar printer?

The physics of heat transfer are way cooler than you think. If we designed homes with them in mind, they'd be a lot more resilient and energy efficient, and people would be a lot more comfortable. Insulation standards and HVAC systems are designed around maintaining the air temperature inside a building, but air temperature is only a tiny slice of the picture. In typical conditions, only ~15% of the human body's heat loss is from convection. ~60% is from radiation, and ~20% is from evaporation (breathing and sweating). Your body glows like a light bulb with infrared radiation. You are constantly emitting infrared radiation into the environment and absorbing infrared radiation from the environment. Radiative power scales with the 4th power of temperature, so even small changes in temperature result in large changes in heat flux. If your skin temp is 34°C (93.2°F), you emit 505 W/m^2. A wall at 10°C (50°F) emits 364 W/m^2 while a wall at 40°C (104°F) emits 545 W/m^2. Your body is ~100 W and ~2 m^2. You need a net cooling of ~50 W/m^2 to maintain your body temperature. If you weren't constantly bathed in infrared radiation, you'd quickly lose heat to the environment. If you're surrounded by hot surfaces, you can be baked by infrared even if the air temperature is low. The temperature of the walls, ceiling, and floor is more important than temperature of the air. Underinsulated surfaces can be cold even when the air is warm, and hot even when the air is cold. This (and humidity) is why your house at 70°F doesn't feel the same in the winter and the summer. Doubling the amount of insulation in a home cuts the energy required to maintain a given air temperature in half, but it also cuts the differential between the temperature of the walls and the air. With better insulation, not only do you not need as much energy to maintain the same air temperature, you don't even have to maintain the same air temperature. Air conditioning can reduce humidity, but most air conditioners can't intentionally control humidity, and most HVAC system have no way to increase humidity. Better control over humidity reduces the temperature differential your house has to maintain with the outside to provide the same heat transfer for the people inside. Having air that's not overly dry in the winter means it doesn't have to be as warm to be comfortable. Having air that's not overly humid in the summer means it doesn't have to be as cold. The goal is to maintain human body temperature, not air temperature. Radiation and evaporation make up most of the heat transfer. Looking only at air temperature completely misses the big picture. We underinsulate our homes and don't provide adequate control over the aspects that are most important for comfort. Insulation provides a much larger efficiency benefit than you'd expect from a simple Manual J calculation. That's compounded by the fact that the economic value of that energy savings is far larger than flat volumetric pricing indicates. (because insulation provides the most benefit in extreme conditions where capacity is constrained and prices are high) Heat and cooling are the majority of energy use in homes, and the vast majority of energy costs. Real consideration of the physics of heat transfer and the economics of energy systems in the way we design homes and HVAC systems would provide massive economic benefits.

@DanielNoree @BondtechAB @3D_Musketeers Why do I think there is a deeper meaning that I am not intended to understand? ;)

@3D_Musketeers @BondtechAB Cool that you did it for charity. Ive managed to stay away from surströmming for 48 years... 😬

Preparing for later today. We will be raising money for @barncancerfond with @BondtechAB with the top prize making me eat surströmming (the fermented herring). Will happen sometime between 6-8am Eastern (noon-2pm local time) so keep an eye out!

@piit79 @RainMotorsports @3DPrintopia I have the very first LC prototype base. That’s it. I gave almost everything away until my wife put her foot down (gently). The ones I kept still do useful work tho.

@RainMotorsports @printrbot @3DPrintopia Got any "LC"s? That was my very first 3D printer from their 2011 Kickstarter :) Made of laser-cut 3 mm plywood, it's still printing well enough believe it or not! (Would post a pic, but attaching a photo from 13 years ago is _rather difficult_ in Twitter on Android 🤷)

The 29th printer in the collection is the @printrbot that I acquired while on a work trip. It will be joining the rest of the older printers for firmware tutorials and display, hopefully at @3DPrintopia

@RainMotorsports @3DPrintopia Cool! I used mine today to make parts for a new printer I’m working on ;) It needs some tlc, but the two parts I designed and printed will bring life to the new one.

@WeShallPai @MakerFaireOC I’m on board for the simplified kits for kids. Learning the basics and how stuff works is invaluable. It’s like programming. You have to learn how the hardware works to be a force. The world is changing tho. Ai lets you skip steps. Probly not a good thing.

@printrbot @MakerFaireOC How do we pick these up? I'd like to save them. Yeah the art of building is lost now. We need simpler kit printers for kids to learn building again.

Maybe it’s time to let go. Moving to Indiana… Fishers area. Grandkids are calling. Who’s in charge of the Printrbot museum archive? cause it should NOT be me. ;) yes, some work. Yes, some don’t. And No, it’s not all of it. <sigh>

@Afro3dP Dude. Funny how me and my wife still remember emails and screen names from early backers and customers. Burned into our memories ;) all my best.

@printrbot An excellent collection, well worth preserving.

@IBUKImAsToRe3D Email is brook@printrbot. Laine (the designer of the board) should do an updated version…. He went on to work for Tesla.. he contributed low level firmware stuff to the cybertruck’s simplified wiring stuff. Great guy. Wildly talented.

@printrbot I’ll definitely take some printrboards if any atleast 3. I need to replace two for my metal plus’s and one simple. I think I have your email still

@MidwestRRfest I’m a story teller, for sure. I’m down for it. My stories seem like ancient history, tho. I guess someone needs to share the history. Old man, walkin!

@printrbot Ya know…. We have a little “thing” coming up in Indiana 😎. Bring them and share some stories!!!

@VAT_Engineering Yeah, I know there are haters. I shipped tens of thousands. Almost zero failures due to manufacturing, tho. Seriously. I maintain that it is the best and cannot be improved upon in its current form. Known only to me, sadly. A lot of fancy stuff out there. But simple is best. ;)

@printrbot Bring a few ol printrbots and people will immediately know who you are. Also having a poster about how the UBIS hotend is clearly superior can spark some fun debates.

@joshuartaylor I should publish the extruder to GitHub. It uses a bondtech dual gear thing you can print. And a geared motor. But you may have to mod it for whatever hotend you want. I only use my old friend Carl Ubis hotends. Never found better. Not sexy, they just perform.

@printrbot I got around 30 pounds of 3MM filament recently for near to nothing...been aiming to get a 3mm head/extruder mounted onto something....maybe an Ender 3....maybe something silly like an Ender 2. IDK....Just need something to feel like I can use the filament that is becoming trash

@joshuartaylor That’s the very issue my wife showed me that started it all…. I read it over and over…. Saved up the money for months then ordered my cupcake. I met all 3 founders at one event (thanks Dale). Liked them all. Wild stories there. Grateful.

@printrbot A CupCake on display. I managed to save it from a gentleman in Canada who was about to trash it. It's missing components - so it's become a daily show piece to remind me where we started. I'd love to work with one that actually functions. Id give me anexcuse to retrofit this one.

@joshuartaylor Where are you located? I am about to cross the whole country or close to it. you can email me at brook@printrbot.com still. I know… I’m doxing myself. But it’s out there. I check it once a week and suck at replies. :)

@printrbot Keep me in mind among your move! I'd love to talk more about your adventures and how to help make the move easier for you! DM me here if you'd like or e-mail me here : josh@jrt3d.com - Would make my year to get hands on a working CupCake!

@joshuartaylor I endorse this attitude. Kudos. Relationships are key. People and teams are a superpower. Finding the right people is the hard part.

@printrbot Good to have some old school roots kicking around still :) The scene is insane for sure - Easy to burn bridges or have them burnt, but we all got friends & it's what holds the #reprap together ♻️ Always more fun to be had! Keeps the scene alive and encourages the new generation!

@DoWhileGeek Word.

@printrbot There are dozens of us, dozens!

@joshuartaylor This one was what started it all for me… printed like crap, but it printed. First thing I designed printed on this… funny now that Bre is a friend. The Prusa Mendel was superior… he’s a friend too. So grateful for the whole ball o wax. Good times!

@printrbot Been looking for a cupcape if your willing to donate or sell it. I'll cover the shipping. I wanted to get one to preserve for archive :) DM me - lets talk shop :) ♻️

@joshuartaylor The OLD stuff, ya. But I’ve made some new “GearHead” style extruders for a 3mm version of a powerful Ubis hotend … working on finishing a printer for prosthetics… it will be 3mm (2.85mm) in its final form for fast check socket prints

@printrbot anything kicking around with a 3mm extruder on it?

@VAT_Engineering I had to look up the date… June 25th? Heck, ya, I’d go. That’s a fun event!! I’ll be the deer in the headlights trying to remember all the old friends from back in the day! Be gentle.

@printrbot Does this mean you're going to MRRF too? Maybe you'll be the one to convince them to move it to INDY.