From what I've seen, good quality metal molds can be thousands of dollars. How do you achieve quality with a 3D printed mold? Also, how do you prevent a plastic-on-plastic part from fusing or the heat of the liquid plastic degrading a plastic mold? How many times can the mold be used? Doesn't a metal mold serve a dual purpose by acting as a heat sync to quickly cool the parts, and wouldn't a plastic mold act as an insulator? Overall, it seems very cool and useful. I'm just curious why you dont see plastic molds more often!
This mold is made of UV-curable resin on an SLA printer, not FDM/FFF. Thermal constraints aren't a concern in this application as a result. You'd be correct in assuming metal molds are more efficient in terms of time from injection to ejection due to the difference in part cooling rates, but metal molds are also likely to employ coolant channels to facilitate the rapid cooling of the part for mass production. Metal molds are the status quo due to their wear resistance and production efficiency. Printed molds are only found in the hobbyist and small entrepreneurial spaces as they're cheap to produce, easily iterable, and simple. You would never see them on an industrial scale.
@@joshuaisaacs8970 An industrial injection molding machine is hundreds of thousands of dollars into the millions. The mold itself is thousands up to tens of thousands or even much higher depending on the complexity of the mold. The mold is expensive because it needs to be designed by an engineer and then machined. The engineering is expensive because you have to design the mold for proper plastic flow, for the specific injection ports, flow simulation, selecting the right materials, surface finishes, etc. Machining time is also not cheap. For consumer products, injection molding is usually only economical if you’re making hundreds of thousands or millions of copies of the part where you can amortize the mold cost across all the individual parts.
@@joshuaisaacs8970the expensive bit is the repeatability A million parts might get made and the first is within 0.05 mm of the last Similarly, 3.144 grams of plastic is used every time
How balanced is the prop? The big issue in 2013-14 with props were alot of props needed to be balanced. don't know how they changed their process to balance them. However thatd be the first thing id look at after making it. Then testing it's strength.
From what I learn from other videos, you need to know the volume of the mold and the density of the plastic you're using (generally defined by the plastic type). Then it's just volume * density = mass of the plastic to inject
So the next thing for at home making will be injection molding? I could see this being applied for costumes, cosplay, and hobby parts to cut down the costs related to small runs.
Resin molds are relatively common for small run injection molds. You're not gonna get anywhere the number of parts out of it compared to an aluminum or, better yet, a steel mold. But it's great for doing a few tens of parts.
Very nice! Please read up on injection molding. This mold needs better venting. There are simple principles that will make your work more professional. Venting / draft angle / injection speed / plastic temperature / runner & gating systems.
Because it’s far more fragile than a propellor made of a uniform piece of plastic, plus this allows us to choose any type of polymer we want to use. It’s also much easier to make a bunch of parts much faster 😃 Hope that helps
From what I've seen, good quality metal molds can be thousands of dollars.
How do you achieve quality with a 3D printed mold? Also, how do you prevent a plastic-on-plastic part from fusing or the heat of the liquid plastic degrading a plastic mold?
How many times can the mold be used? Doesn't a metal mold serve a dual purpose by acting as a heat sync to quickly cool the parts, and wouldn't a plastic mold act as an insulator?
Overall, it seems very cool and useful. I'm just curious why you dont see plastic molds more often!
This mold is made of UV-curable resin on an SLA printer, not FDM/FFF. Thermal constraints aren't a concern in this application as a result. You'd be correct in assuming metal molds are more efficient in terms of time from injection to ejection due to the difference in part cooling rates, but metal molds are also likely to employ coolant channels to facilitate the rapid cooling of the part for mass production. Metal molds are the status quo due to their wear resistance and production efficiency. Printed molds are only found in the hobbyist and small entrepreneurial spaces as they're cheap to produce, easily iterable, and simple. You would never see them on an industrial scale.
@@theofficialczex1708 wonderful and comprehensive explanation! thank you
Why does something that melts and squirts plastic into a mould cost so much? Is there something more complex about the machine that I'm not realising?
@@joshuaisaacs8970 An industrial injection molding machine is hundreds of thousands of dollars into the millions.
The mold itself is thousands up to tens of thousands or even much higher depending on the complexity of the mold.
The mold is expensive because it needs to be designed by an engineer and then machined.
The engineering is expensive because you have to design the mold for proper plastic flow, for the specific injection ports, flow simulation, selecting the right materials, surface finishes, etc. Machining time is also not cheap.
For consumer products, injection molding is usually only economical if you’re making hundreds of thousands or millions of copies of the part where you can amortize the mold cost across all the individual parts.
@@joshuaisaacs8970the expensive bit is the repeatability
A million parts might get made and the first is within 0.05 mm of the last
Similarly, 3.144 grams of plastic is used every time
I've been saving from the moment I saw the 1.0 video. My Injekto fund is almost fully financed! 2 more months! So excited.
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That spring back (that closes when clamped), was it designed, warping from injecting and heat or from printing?
Dont forget to Balance the Propeller.
How balanced is the prop?
The big issue in 2013-14 with props were alot of props needed to be balanced. don't know how they changed their process to balance them. However thatd be the first thing id look at after making it.
Then testing it's strength.
Do you have to suck all the air out to ensure the plastic fills all the mold's cavity?
No, there are escape channels for the air which are too small for the plastic to flow into.
How do you know how much plastic to insert?
From what I learn from other videos, you need to know the volume of the mold and the density of the plastic you're using (generally defined by the plastic type). Then it's just volume * density = mass of the plastic to inject
Which machine you use to prints 3d printed mold
Honestly, I don't even know what is better - this machine or two X1 Carbon printers
can you please make a 5255 3blade prop?
What is the max plastic shot size by weight?
It’s around 45 grams
Thank you
So the next thing for at home making will be injection molding? I could see this being applied for costumes, cosplay, and hobby parts to cut down the costs related to small runs.
Can it inject PPSU ? or PPSU/glass fiber ?
What happens when you put molten metal instead?? Would it still fly or become too heavy??
Sounds like I have a new weekend project 😜
The mold would melt
@@ferv888depends on metal
@@stasi0238 i doupt this guy would spend the money on gallium
@@ferv888 can use lead, tin etc, since it's UV cured plastic its melting point can be pretty high.
What plastic is used for the mold
I can't believe you are doing that in your house in an enclosed space... might want to setup some ventilation my dude
Molda can be made with 3d printer? Or it has tu be cnc'ed?
It can be 3D printed 😄 Watch the video again
Resin molds are relatively common for small run injection molds. You're not gonna get anywhere the number of parts out of it compared to an aluminum or, better yet, a steel mold. But it's great for doing a few tens of parts.
Qual resina plastica é feito a helice
Very nice! Please read up on injection molding. This mold needs better venting. There are simple principles that will make your work more professional. Venting / draft angle / injection speed / plastic temperature / runner & gating systems.
what material did you print the mould out of?
UV curable resin
Brutal 👀
Saving up , just boight a bboo p1s , need that injection machine lol
Wow 😲
Dude invented Injection Molding, sarcasticaly clapping my hands.
This is a confusing comment.
Being condescending shows you would never achieve such things like this keep that attitude and see where it gets you bud.😂
How to pre heat the mold😢
Very nice
Thanks! 😄
And why didn't you made it to produce more than one propeller at the time?
When he scraped that part out, will scratch the mold surface down and down.
Try make toroidal blade
Injection molding was good enough for Grandpa and it’s good enough for me. Don’t need no highfalutin 3D printers.
how much is it
Nice.
Thanks! 😊
4 prop version when?
👇🏻
Make toroidal propeller/ fan
3D printed with which material?
Ah OK UV curable resin was suggested
I think you should actually show it working on your drone you have to really sell the injector thing
And where did the hemi come from? Mercedes Benz!
It look great and sounds cool.
But i'm gonna catch you on a technicality.
You wouldn't "mass" produce anything like that.
Molding
But how did he get the first prop out
You can use it to make them out of carbon fiber
Lol so you made a injection molded 3d printed finish part.
Lol GW is fucked. Im gonna make whole 40k armies like this😂😂
For people wondering: it costs $1950
Very interesting but way too expensive. I have this fondness for food and drink so they must take priority.
Why not just 3D print the propeller??
Because it’s far more fragile than a propellor made of a uniform piece of plastic, plus this allows us to choose any type of polymer we want to use. It’s also much easier to make a bunch of parts much faster 😃
Hope that helps
You seem to have a defect, scratch, on your mold
No way bro can make pp parts 😮
That air need to vent ......
ihave propeller
2k 😂😂😂
Most commercial props have some carbon fibres in the mix....
I don't like that there's an imperfection in your mold en you didn't do anything about it. See those 2 sripes in the blade..
Why not just 3d print the props