We Made Plastic Injection Holders For Resin 3D Printed Molds | Homemade CNC Machine Job

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We are still trying to perfect the art of plastic injection at home. In this video we focus on improving the results of injecting parts using 3D printed molds. Our focus was to eliminate the flexing in the plastic molds by using thick aluminum fixtures that we milled out on our DIY CNC machine. These pockets surround the plastic molds very tightly which in theory should eliminate any flexing. Our results were promising, and we will continue to investigate DIY solutions for this common issue.
Hope you enjoy - Alan and Dave
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29 сен 2022

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Комментарии : 78

@kevinr6721 Год назад

I am a mechanical engineer who has been working in the automotive sector designing plastic injected parts for the last 7 years. I love your guys' videos and find them fun to watch as you are cresting all the systems we use (at a much smaller scale of course) from the ground up. I primarily design exterior body systems which comprise of multiple cavity small fastener tools running on small one ton presses, to large bumper covers being injected on 4000+ ton presses. If you would like to have a meeting and discuss some best practices to further your designs I would be happy to collaborate. Again, appreciate all the work and effort you guys put into your projects and videos, and hope your channel blows up to the size it deserves.

@ActionBOX Год назад

Thanks Kevin, I really appreciate your support 😃.

@cubfendi8714 Год назад

I'm a proccess tech and mold setter. I would love to shoot a resin mold in a low ton press to see what the actual lifetime of the resin would be..

@user-cr4sc1ht9t Год назад

The amount of softening languages you guys learn in those industry is amazing

@Makex_sweden Год назад

This channel is growing like crazy and I can tell you work really hard on these videos because they are super interesting! Well done!

@ActionBOX Год назад

Thank you 😃.

@hollt693 Год назад

I appreciate how you endeavor to explain all the little details as you go along, like how much to tighten the screws and in what order. I think many tutorial videos tend to gloss over those things as obvious or unimportant, but they can have a profound effect on the outcome of the project, so it's better to mention them than to assume people will 'just know'. I hope your aluminum casting experiments go well. If it proves too hot for the resin, I'd try again with a lower-temp casting metal, as some of them get no hotter than the plastic you're injecting. Actually, I just remembered that I once saw someone cast pewter or tin-bismuth or something in a plain FDM printed ABS mould, so that should definitely work with the resin. Still, I hope the aluminum works.

@ActionBOX Год назад

Thanks for your kind words and support 😃

@Corpsebeer Год назад

Great video! Formlabs recently released a white paper regarding 3d printed molds using metal backing plates. They found that high tensile strength, low elongation resin (rigid 10k) performed more cycles than resin with higher heat deflection. It's titled "Injection Molding with 3D Printed Molds: A Technical Study From a Leader in Plastics and Composites". Keep up the good work! Thank you for fulfilling the dream of turning every engineer's garage into a full cycle manufacturing facility.

@ActionBOX Год назад

Thanks Quinton, that’s an awesome fact that you shared, I’ll pull that paper up in a second here. Glad you enjoyed the video and thanks for your support 😃

@3DPrintStuff Год назад

This is great, thanks for sharing. DIY injection molding is definitely on my to do list.

@McGutschy2 Год назад

There are so many ideas.

@ActionBOX Год назад

Thanks for the comment, I’m really glad you found this useful 😃. Cheers, Dave

@Jacksonhoch1 Год назад

I love this channel. They just create all their own tools, and I think that’s really cool

@ActionBOX Год назад

Thanks for your support 😃. Cheers, Dave

@jtwarner13 Год назад

Loved to see the entire machining process! That and the progression of your projects is very enjoyable!

@ActionBOX Год назад

Thanks Jonah 😃. I have noticed your comments consistently in every one of our videos, and I really appreciate your dedicated support. Cheers, Dave

@martindieux Год назад

I work in a plastic inyection factory. It is funny to see how you go from the base of the manufacting, discovering the faults and trying to solve them. You are showing what happens. Molds are quite a piece of engineering, specialy for complex parts. Many of today's molds have hundreds of moving parts just to create, for example, bottle caps. I can give you (or anybody who's intrested) some tips and tricks for your next projects. Just contact me.

@ActionBOX Год назад

Thanks Martin 😃. This is definitely nonprofessional setup but we will reach out when we remake our fully automated machine. Cheers

@RobertWelchman Год назад

great video and thanks for sharing. wanted to recommend that you check your Haimer. Your needle isn't returning to zero in the resting position, so your position is likely off. Confirm with an edge finder. There are two adjustments to haimers, the first is to get the stylus on center by adjusting the set screws around the top while reading the center of the indicating ball with a dial indicator and the second is to adjust the dial to read zero by adjusting the set screws around the dial.

@ActionBOX Год назад

Thanks Robert, I’ll look into it.

@RobertWelchman Год назад

@@ActionBOX Good deal. I had the same issue. Looks like you're about 4 divisions out, so that's 0.04mm or about 0.0015in. Not huge, but it's there.

@speway Год назад

So good. Just so good.

@ActionBOX Год назад

Thank you 😃

@Juanguar Год назад

3:22 I was typing a question in regards to the shavings but you answered it already while I was typing lmao Thanks

@ActionBOX Год назад

Hahah, glad we could help. Are you looking for a way to recycle your chips?

@Juanguar Год назад

@@ActionBOX I was but I kept watching and now know what to do The video was informative than I thought

@ActionBOX Год назад

@@Juanguar sweet, glad you enjoyed. Thanks for leaving a comment. Cheers, Dave

@rameezsheikh7576 Год назад

Mold for a Mold 😂

@ActionBOX Год назад

Hahah, yeah, we were laughing about that as well 😆. Thanks for watching 😊

@3th1xs Год назад

Nice work!

@ActionBOX Год назад

Thanks you 😃

@ByDesignation Год назад

That's a really cool solution. I can see there being universal standards for aluminum housing to hold resin molds.

@p0pe_sam Год назад

6:12 words to live by

@GermanDarioCarte Год назад

Excelente. Saludos desde argentina

@davecoggan9619 Год назад

I don't see any vents on your printed part. 0.1mm channels by 2mm wide has worked well for me

@ActionBOX Год назад

That’s a great idea. Thanks for sharing 😃

@scottwatrous Год назад

Next steps probably would be having a way to secure the printed inserts into the machined shell, adressing alignment precision between mold halves using pins or even precision shafts and bushings (vs screws) and then having a rapid way to clamp/unclamp the mold shells, such as, well, having clamps instead of screws. Or having slots and sockets for the screws so with one or two turns a washer is free to escape a pocket and the screw can then be pulled free. And there's many other options there like toggles, Pistons, etc. Since you have a CNC mill and a 3D printer there's no need to go overly simple on the mold design now that you have a working proof of concept.

@ActionBOX Год назад

Hi Scott, I totally agree. We definitely will be dwelling into that at this point. Thanks for leaving a detailed comment. Cheers, Dave

@CNC-Guru Год назад

1 degree draft is perfect for injection moulds. Also do higher volume instead of individual part for less consuming time as, Time = Money.

@ActionBOX Год назад

Thanks 😃

@Zach-vv6nx Год назад

You could drill and tap holes on the backside of the pockets so you can run a bolt in to easily get the molds out.

@ActionBOX Год назад

Agreed, that’s a great idea. Thanks for sharing Zach.

@CM-mo7mv Год назад

I think a channel in the touching sides and adding a teflon gasket so liquid plastic will stay in might prove to be a easier than always having to extract the residuals. maybe adding a non stick spray ?

@ActionBOX Год назад

I agree. That’s definitely an easier way for home injections. Good catch.

@prabhud3426 Год назад

I suggest to use diffrent cooling media. Kerosene makes a good cooling media for aluminum machining

@ActionBOX Год назад

Why do you recommend something different if what I have worked? Just curious 🤔. Cheers

@prabhud3426 Год назад

@@ActionBOX 2:35. Kerosene won't make the aluminum chips stuck like that.

@jasonruch3529 Год назад

I love ❤️ your videos! How do you like the masso controller?

@ActionBOX Год назад

Thanks Jason 😃, to be honest I don’t like that it doesn’t have some advanced functions like G84 for rigid tapping. At that price I was expecting more which makes me miss Mach 3, but it’s really easy to set up which is nice😊. Cheers, Dave

@immortalplayz8946 9 месяцев назад

I subbed

@jyvben1520 Год назад

have a another vertical hole to take the excess, the alu blocks could easily be replaced by heavy steel plates that slot in. and those would be only limited by the injection chamber height.

@ActionBOX Год назад

That’s a good suggestion, in hind sight I definitely should have added an escape channel. Thanks for watching and sharing your thoughts. Cheers, Dave

@Jimunu Год назад

Curious on how you will do the aluminium

@ActionBOX Год назад

Stay tuned, we are working on it 😀

@caramelzappa Год назад

Love the videos. For me what I'm finding is that injection molding takes a lot more manual labor than 3d printing. Printing takes longer, but it allows the parts to be produced while I'm sleeping or working on other things. This requires my complete attention and focus. So I'm not sure the niche of production where this would make the most sense. If I'm going for a lot more volume than my printers can handle, it likely makes more sense to just get them produced somewhere rather than have production monopolize all my time, or train and pay an employee to run the injection molding.

@johanness6545 Год назад

"the niche of production" injection molding is the way, almost any industrial product in our world is made of. 3D printing is the niche, not injection molding

@KJMcLaws Год назад

This is perfect for in between low volume 3d printing, and paying a hundred thousand to get tooling for a only moderate number of parts.

@vnkkhare078 8 месяцев назад

Where is the next video that you promised at the end of this video? Can't find. Can you please help? Was that video made?

@user-ng8uk4op5t 3 месяца назад

Berapa biaya untuk membuat mold alumunium casting dengan balok besi 6x15 lebar 3cm

@Gogi58 Год назад

Fantastic.

@richiskinner9810 Год назад

I'd like to know how many parts you'd have to make in order to save time using incection molding vs. investing all that time and money into 3d printing

@ActionBOX Год назад

That’s a great question, we’ll have to give that a try and do some calculations. Cheers

@capivaraofwar Год назад

Well, what about that wire edm machine?

@ActionBOX Год назад

Working on it. 😔. We’ve been busy, but it’s still in the books 😃. Cheers, Dave

@user-cr4sc1ht9t Год назад

So where is your mold release

@ActionBOX Год назад

Still in the store 😜. We didn’t use any, it worked fine without

@amorton94 Год назад

Over-curing is a thing? Weird.

@ActionBOX Год назад

Yup, the prints will become more brittle and their impact resistance will weaken over time. Hope that helps. Cheers.

@Thorhian Год назад

Next step, buy some decent steel and mill out both halves of the mold entirely.

@tristansimonin1376 Год назад

you loose the whole point of this project. Making conventionnal mold is very expensive

@ActionBOX Год назад

Our point is to explore the possibility of using 3D printed molds for plastic injection. Hope you enjoyed the video regardless.

@Thorhian Год назад

@@ActionBOX Sorry lol, I just really want to see more action from that awesome homemade mill. Have a good one.

@hollt693 Год назад

@@ActionBOX If I recall correctly, PepsiCo recently partnered with Nexus3D to make FDM printed PEEK moulds that fit in a metal master shell (much like you've done), except for blow moulding their bottles, rather than injection moulding. So it certainly seems like a commercial viable strategy.

@ActionBOX Год назад

@@hollt693 I didn’t know that but that’s really cool. Thanks for sharing 😃. Cheers, Dave