Homemade Plastic Injection Machine Works With 3D Printed Molds | INJEKTO 2.0 

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what a time to be alive. affordable 3d printers, CNC routers, and now I witnessed someone injection molding in a somewhat amateur setting. fantastic

On the note of Shredded Bottles, I don’t know if you know this already, so sorry in advance if I’m “preaching to the choir”, but the PET Plastic they are made of goes through Hydrolysis if even a small bit of water (vapor) is left in the flakes. So Drying the flakes and keeping then dry will be key. Beat of luck in that, I’m excited to see the results !

My favorite part about the community is the incredible design enhancement comments below. I was an injection molding foreman years ago followed by mold setting technician and later did some extrusion blow molding as well. Years later, two years ago, bought my first 3D printer. Right now I'm looking at a desktop cnc, laser and frankly, adding the injecto would give me four methods of producing parts for robotic design. The four together should provide the variety needed for creating most any type of part necessary. Great work guys. Love the Injecto! Love all the great feedback for improvements!

Nice improvements. If I can suggest. 1) Use phenolic materials as heat blocks. They are cheap, and easy to machine to shape. 2) Your ram is tight tolerance, great. However, if its expansion rate does not match the heat column, you can get it to jam. Normally in injection molding, to reduce leakage. You add small machine ribs or groves to the piston or ram. They will act as material collectors and reduce leakage without having to use tight tolerances. Similar to this design found in Injection Molder Valve gate assemblies. Or on shooting pots. 3) Always use heat paste for the installation of the heater cartridge's, reduces the chance of a hot spot and its a failure point. Same for the solid state relays, they should always be installed with heat paste on the back. 4) How are you mitigating the chances of a runaway heater control or the solid state relays? Both can fail in a close state. Does the E-stop control kill voltage to the heaters as well? Do you have a central E-stop? 5) Would always recommend to have a source of water nearby as you run the equipment. A simple bucket or pail filled with water is better than nothing. If plastic shoots out and gets on bare skin, the natural reflex is to grab the material with the other hand. And now you are burned twice if not wearing gloves. Throwing your hand or wrist into a bucket of water is far safer and minimize the burn damage. Whish I had one of those machine 10+ years ago, would have made my life easier in prototyping.

Really love this design. This would be great for anyone trying to build a microfactory in their garage!

Love the idea and build quality of the injecto 2.0. Just a thought, it might be a potential idea to add a micro controller to make operation easier and potentially automated. A user interface and automatic volume injection amount would be ideal so there is no guess and check on an expensive mold. Great work so far!

This is an awesome design! I'd recommend a floating joint from that push rod for the plastic and the crossbar that links the cylinders. Any misalignment of the rod and the cylinder that holds the plastic will destroy the tolerance you have on those 2 parts. I work as an automation engineer and the biggest failure point for pneumatic cylinders is misalignment. I think your cylinders will be fine (unless they move at different times). I think its a small change with big benefits. Its also very easy to judge a design from the outside looking in. Non designers love to criticize and say "this design is terrible its the worst thing I've ever seen" so this is not one of those comments. Overall GREAT job but that would be a small change that I would make. There are probably a million right and wrong ways to do this but overall you did a bang up job!

Excellent work guys. Glad to see the 3D printed moulds solved the cost issue!

Some Ideas for Version 3.0 -Powder Coating the Aluminum will result in a super high quality look - A Blast shield that you can lower and raise in case the mold breaks to protect your face. - Measurement lines on the rod on which you adjust the limit switch. So that you know how much Plastic will be extruded. - A Fan that turns on when things get too hot or you can turn on by yourself so you can cool down the maschine after extensive use And for the molds: -Ive seen people using aluminium outer rims in which you place in the resin molds. So that you dont have to print the molds extremly thick. -Aluminium will be better to clamp or screw together than resin since the thread are stronger. So you can add holes with threads on the aluminium outer rim

Been waiting for it, machines are made so professionally that it's probably best on RU-vid

I work in an injection molding factory and I can ensure you you did a great job. Bravo!!!

This is incredible, literally was just talking with my buddy about injection molding our project and how expensive it was, and then boom found your page. VERY impressive guys!

as someone who's worked as a mold tool machinist and a press operator i approve. those were my 2 most stressful jobs and im glad i got out of them. it would be more fun to do this at home where you control everything and dont have past due deadlines and can take bathroom breaks as often as you need to.

I have been anxiously awaiting for this! Well done guys! You have solved nearly all the shortcomings I noticed about the previous design. :)

Great to see this mold machine will fit on someone's desk and perform what is designed for❤️

Amazing job guys!! It would be awesome to see some videos of your engineering design process. Maybe like a behind the scenes CAD and CAM session

Something to consider for a future version if you're worried about the heated chamber overheating the assembly, you can use thermally insulating mica sheets. We used these at my previous job to insulate the tooling from heater blocks for hot plate plastic welding machines.I would source them from somewhere other than McMaster Carr since their sheets tended to break down after only a few hours of tool use. As I said on your shreddy video, this is an amazing project and I am all for having hobbyist ways to recycle plastic waste. When I have the disposable income for tools again I'll definitely look into this.

Brilliant! At first I just thought your videos were average, but you have really started to show how great you are

Token comment for the algorithm- far cool dude!

Love how you guys showed the first assembly method wasn't the most optimum one and then gave a better one! 👍👍👍

That cross bar is THICC. Love it.

Amazing product, I have been 3d printing for some time but this would enhance certain projects, great job guys :)

wow this could be revolutionary in small manufacturing! Really love this idea, hope to see more!

The youtube algorithm recommended your first version to me today, was incredibly excited to see that the follow up is already out :D

love seeing builds like these. I hope to be able to make things like this later on.

I really like the recycling mindset in your videos lately.

Very cool system and some beautiful machining results.

This is definitely great! I also was surprised to see how the resin prints did withstand both temperature and pressure... About the possibility of plastic ejection : it would be neat to have a polycarbonate shield in front of the mold, perhaps a swiveling one, or snapping on one? Anyways, the 2.0 kit really ties up the loose ends from the 1.0.

I like this. I was involved with a shop that started off using the resin cured molds as inserts into MUD units for prototypes (master unit dies). CNC aluminum was good for lower volume but is significantly higher cost in mold size. we were working to lower that cost to entry industrially. The primary limiter was the heat history of the plastic mold. though the resin cured was better than standard filament 3d prints, the heat would soak into the outer sides, usually blowing out the parting line, as it's harder to scrub the heat in that region; where there is little active cooling. Adding cooling lines in the prints didnt seem to help much as a trade off. Wall thickness of the resin mold had to be near double the part thickness to stand up to the injection pressure. (which was often 10K -20K PSI on smaller machines) in addition, the more heating and cooling cycles would make the acryllic, or composite resins degrade over time, even below the plastic transition temperature. Some compatabillity issues were found between resins near their transition temperature and the mold surface temperature. Painting an SLA with silicone to make a negative, and then casting a surface with an epoxy is allright for several swapp-able units; but in short order, you want to switch out to aluminum for prototyping. A thin skin of foil, or composite pouring resins (graphene, carbon black, copper flake) helped with heat scrubbing, but Resin casting and time cost adds up relatively quickly. Tolerancing on casting is good though. Shut off on parting lines were an issue (again, heat buildup) at small lot runs when you wanted to get up to production speed. Some solenoids in the bottom of the frame would be ideal to help with the ejection of parts -- but that's more of a bottleneck if you have fast enough cycles to make the heat scrubbing an issue. I like the bigger cyllinders, Often the injection speed is the limiter with the shot size. Venting and part geometry relative to the sprue helps with flow to reach further in the part shape. All kinds of fancy gating can be used to sidestep the machine limitations. The trade off is the more runner you add, the less part you get for your shot size. high end hot runners and valve gates are theoretically a choice; but I suspect part orientation in the mold and shortening the runner with several gates to fill will optimize given the low-cost-protoype constraints. There is a fair bit more done in the DFM for injection molding to make a part and a machine compatible. if your max shot size is 27 grammes, that's a good size -- but I'd bet there are limitations keeping you between 22-25. Would be willing to discuss more if desired. I would be interested to see some ideas for how to make this more durable. The next step up in price from a unit like this is a 10K screw driven desktop molding machine -- so this is super accessable; right around the cost of a basic 3d printer. if you can make polyCarbonate accessable to the hobbyist without using aluminum with a benchtop press -- that's a huge barrier to entry for 3-d printing. Injection molded part strength is better than cast, SLA or FDM for prototyping too. Very exciting project, great execution you guys.

Omg you guys actually did it! I'll have to grab one of these ASAP

Fantastic!! Great job guys!!

What a fantastic job you guys just did 👍👍

This would be an absolute game changer.

Looking forward to the bottle shredding results in the next vid! Nice work on all the progress you're making, keep it up!

super awesome, cant wait for more!

This looks like what I've been looking for!

Fantastic!! Congrats!!!

Great product and video guys, well done!

Nice, I’ll need this in the future

This looks simple and robust and I really like what you’ve done here. I have been looking for a system like this. Could you post some additional videos of the machine producing more detailed parts? I’m curious as to how it might perform when producing a 1/12 scale action figure head, for example. Great job!

Injecto is truly one of the last components in a home production line that we've been missing. Wish I could afford one for my own garage... It'd basically bring me to having almost nothing I couldn't fabricate.

I think it would be nice to have an mesurement scale with the stop plate. So that you could fill the mold more acurate. You could do this with an ruler behind the rod or if the tollerances alow it, laser engrave it into the rod. You can calculate the volume of the empty mold to know howmuch plastic is needed. And calculate how much the injecter should move to inject this volume.

Great video, looking forward to what comes next.

Nothing beats injection moulding, 3d printers are slow and not up to scratch for high amounts of detail.

Great design. I was amazed watching your product working so well. Your design is sturdy and still small. I would be very excited to have one and test it out for my projects. I was already excited about version 1 but this is much better. Great work guys!!

This is awesome, great work

Would love to have one of these, I was making pinball mods with 3d resin but found that it’s really not suitable in certain circumstances, keep up the great work.

That would look so cool for my resin models

looks really cool

Awesome sauce guys!!!

Very interesting. Looking forward to seeing more.

Well done. Kudos.

I wish I had one of these. You did an amazing job engineering them. I hope to own one, one day! Keep the cool stuff coming! 😃👍

You guys kick ass, keep changing the world for the better!

You guys are really Top Shelf …. ⭐️⭐️⭐️⭐️⭐️ content, concise presentation, sound engineering practice and engineering economics (safety, function, cost) ….. 👍👍😎😎💪💪

Freaking amazing... I am speechless. Keep it up.

Holy moly, imagine winning this beast :D id cry!

This is awsome keep up the good work.

You guys are doing a fantastic job at R and D in order to find out what works best, but most of all what you think the customers would love.

This Shredii and injekto series has me on the edge of my seat like the mandalorian series! Great job guys! Excited to see the next video.

damn, you weren't kidding when you said it was better than Injekto 1.0, this is really really refined, Good job guys and amazing video 😄👍. Will now be waiting for the shredii 2.0 video after that massive cliff hanger 😂😂

You guys got the skillZ

Good job guys !

Awsome machine and just what the market needs, I will be buying one myself just as soon as I move into my new home

Great Job guys

this looks amazing there is not a lot of things I would recommend for this, I think the only thing would be glass fiber tape on the top and bottom it's a high temp tape that should make the injection chamber both more snug and more thermally isolated from the frame

Impressive video! I really like the thoroughness - you covered a whole array of things and uses and workflows and considerations! Very cool!

This is awesome

great design

yeeeeeeeeeeeesssssss, I've been waiting for this one :DDDDD

Awesome!!! Congrats!!! Maybe one day Ill try it out on my channel!!! Best Regards From Brazil!!!

You are awesome. The fact I can plop down on my couch and search for “DIY injection mold” and find you spoon feeding the whole project to me and 437,000 other folk 😱🏴‍☠👾

Awesome work... the double operator switch is real good idea.

commenting for more reach,Nice work, waiting for more!!

Holy crap that is pricey. Great video looks so cool. I want one.

this is incredible! you guys should make/sell a machine that turns scrap plastic into 3D filament again. That'd be awesome.

love this lol

13:35 You should make an transparent acrylic door in the front for protection

You could potentially add a polycarbonate sneeze guard to protect the user's face. And/or two vertical side shields that stick out to protect the hands/wrists.

the machine is great 😎

man i need one of these in my workshop

thats so good

Actionbox WOW i buy your kit shure ! looking forward to receiving mine

Neat machine.

This is a really cool project. Injection molding is just so far out of reach for the average person. I love this.

I have giant box full of plastic I can't do anything with. A machine like this and a shredder need to come to the market at an affordable price so everyone can get these things.

really cool!

Injekto sounds like tye name of a Spiderman's enemy. Great video 👍

That would be a great tool to have at my local makerspace

i Suscribe even though its 2 years. Cause I know little supports can make a big impact in your projects and eventually by your contents we will be benefitted as well. Thank you for all.

Nice project.

Man injekto 1.0 would really come in handy for me

I have been 3d printing for many years and it's been a challenge to make good money at it without devoting all my free time to it! This would be a game changer for a small business to stay profitable!

I ok at making things, but I wish I could think like you guys, awe inspiring.

saw the shreddy first, injecto & shreddy are quite the pair, I like that you included the safety concerns (as a former bridge builder & FA-18 Mechanic I saw too many friends maimed just trying to do what I did because they didn't respect the safety concerns like I did. ... though I must admit when i was new i didn't either, and with experience & luck I was able to learn before hurting myself or anyone else.

I love resin printing but I need this! I have been looking for my solution for years now! I loved your 1st Machine. But I’m going to have to order one soon!

Great content as always

awesome keep it up great achievement

Best, best, best