Homemade Plastic Injection Machine | DIY

After building our DIY homemade CNC milling machine from scratch, we wanted to push our home shop to the limits. We designed, and developed a homebuilt, fully automated plastic injection machine that is desktop size, and fully electric. 3D printing takes hours per part. This machine can make 4 parts every minute.

We hope you enjoy, and drop your questions in the comments below.

Ways To Support Our Channel:

We built a CNC Machine

We built a Wire EDM

We built an EDM Sinker

We built a Plastic Injection Machine

We built an Anodizing Setup

We built CNC Router

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[nickp]

You guys have a good formula for youtube hits. Short and fun videos, showing the final product in use, and then a quick summary of how it was built. This coming from someone who has probably spent 100 hrs watching YouTube cnc build videos:)

[ericsyj]

If you upgrade this machine or design a new one, you should consider moving from a piston to a screw to generate the injection pressure. Plastics are shear thinning, meaning that they become less viscous under shear (like in screws). This is caused by the polymer chains becoming less tangled, allowing them to flow more easily. You will be able to inject at a lower temperature and pressure, leading to less polymer degradation and mold wear.
Thinned polymers will also weld to themselves more readily, so if you move to molds where the flow splits and re-joins itself (like in a ring-shaped mold) the parts where it re-joins will form stronger joints.

[VacuousCat]

Makes me wonder what differentiate "homemade" and "one-person workshop"

[mrspeaky]

How did i only find this youtube channel now?

great to see somebody use lichuan servos too

[demi]

This right here is quality stuff, definitely should consider open sourcing plans/code and making more detailed vids.

[FreeCADAcademy]

This is probably one of the coolest things I have seen in the last years. Amazing!

[thetruemorg]

Having work for many years in a injection molding plant: you pretty much got a basic entry point perfect. 5 years ago when I was Trying to make a run of about a hundred parts I happen to look at the pricing on the most basic injection molding stuff... I'll just say I sure wish I had a easy do-it-yourself kind of mold machine like the one that you guys created

[fragged]

A guy called Butler used to make desktop injection machines 40 years ago, I met him when I was working in plastics, bravo for your efforts though.

[nigtwingrobin]

Can you please make longer in-depth videos explaining everything that your doing and the parts that you are using especially for the cnc router and mill. Also love your videos.

[RoadRunnerMeep]

Love the design, the small scale stuff is great for hobbyists and small businesses too. A small CNC to make your own moulds, then a small injection machine to make them

[CodingEntrepreneurs]

This is amazing. I’d love to collab anytime you would. Certainly a type of machine I’d like to help contribute to bring to open source.

Keep up the great work. Subs will come in time.

[spamspasm]

Why has it taken Youtube this long to recommend this channel to me? What a travesty. Subbed.

[loopie]

Many years ago I used to do some support for these types of machines. The companies specialty of CD cases. As you are attempting to have an automated system, you need to control the temperature of the molds. We had heater coils on the molds to get them up to temp so the plastic would flow. After running them a while the mold gets too hot and the molded piece will not eject, it will just tear. We had water lines cut in the mold that circulated. We monitored the temp of the mold to tell if we needed to heat the mold or cool the water. I know it may be beyond the scope of your build, but next time!! :-)

[elwin_tjustice]

Cool machine! I am a Controls Engineer and I primarily do controls on rubber injection presses (hydraulic motion control). I would love to see how you guys did the logic on a raspberry pi. I used to run my machines with Rockwell Automation controls (ladder logic), but have since switched to B&R Automation (primarily structured text). Lots of advantages over the former. So many similarities between the two types of injection machines, so I really enjoyed this video! Keep up the awesome work, I am subbed for life now!

[Mboy]

I work with a full size plastic injection molding machine. Fascinating to see a homemade desktop version

[I.a.m.]

The only thing that bothers me about this is how you skim over all the crazy amount of work that you did and how much knowledge it takes to do this.

Absolutely amazing!!! I think it's crazy you are able to do that and I'm sure you'll make even cooler things!

[sanches]

Mate, i don't need build plans or anything - i can make a design of my own, but the thing you give away in massive quantities is motivation and inspiration to get of my lazy a$s and make something! Thank you! All your builds are great! I wish you all the success and more

[TonyTheTrain]

Holy. Crap. I can't even imagine where to start with this. Fantastic job!

[DonQuichotteLiberia]

Holy shit, you guys are incredibly productive, skilled and industrious! Excellent explanations, too. True heroes, thanks for the videos.

[FriendshipLights]

This machine would help so much to spread love and light. Thank you for this video. Maybe one day an automated system like this would be possible for me to spread joy. Much love (and light) going out to you! 🙏