I suppose you could but cast aluminum or steel would be a hell of a lot better material to work with. I bought a waste oil centrifuge from PA biodiesel a few years back when e-bay had %20 percent off coupons for a short period of time.
Yes.
And used exactly once. Because the it will absorb the oil and be destroyed by the next day.
Which, frankly, can be ideal for low volume at home. Print one for a buck and throw it away when you're done.
>for a buck
Problem is PLA (or whatever you're using) is typically very expensive. Where 3d printing shines is in the setup cost. You can make custom "injection molded" parts in the time it takes you to download them and wait for the print to be done, while a shop would have to make molds and revise your drawings to include ejector pins and seam lines, then store them in between runs.
>Because the it will absorb the oil and be destroyed by the next day.
Genuinely not a concern. PETG and Nylon are both common for 3D printing, and both hold up just fine to motor oil, synthetic oils, gasoline, diesel, kerosene, benzene, anything you'd encounter in waste oil. The toluene in gasoline may eventually affect PETG, but it'd take a significant amount of time as gasoline only contains around 1% - 20% toluene, and there's only a very small amount of fuel in waste oil. Just wiping the thing clean between uses would be more than enough for a PETG or Nylon centrifuge bowl to hold up quite well.
>for a buck
Problem is PLA (or whatever you're using) is typically very expensive. Where 3d printing shines is in the setup cost. You can make custom "injection molded" parts in the time it takes you to download them and wait for the print to be done, while a shop would have to make molds and revise your drawings to include ejector pins and seam lines, then store them in between runs.
It's definitely way more expensive than injection molding, but it's not that crazy. Just shitty off-the-cuff math, a 2qt centrifuge bowl sufficiently strong is going to need about 1.5kg of filament, so $20-$30 worth of PETG. Just buying a WVO Centrifuge Bowl is in excess of 10x that price, though it'll be at least twice as big.
That said, still seems dumb. Maybe for fun, or as a highschool science fair project. You print a centrifuge bowl, then what? Still need a big outer bowl to put it in, not worth printing when you can get 5gal buckets for free or buy a big metal pot from the thrift store for $1-$5. Then you need a beefy motor, because that centrifuge bowl with 1/2gal of waste oil in it will weigh over 6.5lbs and need to exceed 2000rpm for the thing to be worth using at all, and you'll also need a speed controller, and seals for the shaft where it enters the outer bowl... I guess you could print some legs to stand it on, and an enclosure for the aliexpress speed controller. This just isn't much of a 3D printing project in my mind. If you already had a typical bowl centrifuge and were considering 3D printing a bowl for it as an experiment, that'd be neat, but if you want to build one of these things I wouldn't waste my time 3D printing anything aside from an enclosure for the electronics and maybe a knob or handle here and there.
>That said, still seems dumb. Maybe for fun, or as a highschool science fair project. You print a centrifuge bowl, then what? Still need a big outer bowl to put it in, not worth printing when you can get 5gal buckets for free or buy a big metal pot from the thrift store for $1-$5. Then you need a beefy motor, because that centrifuge bowl with 1/2gal of waste oil in it will weigh over 6.5lbs and need to exceed 2000rpm for the thing to be worth using at all, and you'll also need a speed controller, and seals for the shaft where it enters the outer bowl... I guess you could print some legs to stand it on, and an enclosure for the aliexpress speed controller. This just isn't much of a 3D printing project in my mind. If you already had a typical bowl centrifuge and were considering 3D printing a bowl for it as an experiment, that'd be neat, but if you want to build one of these things I wouldn't waste my time 3D printing anything aside from an enclosure for the electronics and maybe a knob or handle here and there.
Also this you could fabricate everything you need from steel easily. The only thing that really needs to be machined or properly balanced would be the inner bowl. A guy could probably use an old brake drum with a lip welded or brazed on and then balanced for the bowl.
>Just wiping the thing clean
No.
A 3d printed part is not an injection molded part.
It is pourous. The strings and layers create channels which will wick up and hold fluids and suitably sized particles.
It's the same reason you can't use 3d printed objects for food.
There will not be enough of anything harmful in used motor oil to degrade a print made in an appropriate material. The wiping it clean is to remove the bulk when it's not in use, limiting the total exposure and prolonging its life. Try harder next time.
The oil and the particulates will seep into the channels. The stressed induced by the spinning which force that fluid and those particulates along those sheer lines will peel it apart line an onion over time.
Do you want to have a machine which may fly apart and throw plastic shrapnel and oil everywhere at some indeterminate run?
No. So:
Yes.
And used exactly once. Because the it will absorb the oil and be destroyed by the next day.
Which, frankly, can be ideal for low volume at home. Print one for a buck and throw it away when you're done.
>Print one for a buck and throw it away when you're done.
Take your meds, your theory is schizo-tier bullshit.
4 months ago
Anonymous
Look, I don't have to convince you. When you have to pull plastic bits off the walls and sponge up the oil spray, all you'll do is curse me. "Fricker was right. Frick him." And so forth.
If you know what's good for you, you'll grow up and act like a man instead of some perpetual angsty teenager.
4 months ago
Anonymous
Sorry kid, you're wrong, and you don't know what you're talking about.
Printing anything to hold a liquid is tough. Try it and see
Glhf
Not him but here: 3d print your shit and cover it in fiberglass and resin.
No it isn't. Maybe 12 years ago, but it sure as shit isn't anymore.
4 months ago
Anonymous
I await your results
Run oil centrifuge for two days for proofs
4 months ago
Anonymous
You gonna send me the parts? I have no interest in OP's little science fair project for myself.
4 months ago
Anonymous
Printing anything to hold a liquid is tough. Try it and see
Glhf
Not him but here: 3d print your shit and cover it in fiberglass and resin.
>coat the filament
let's ignore the question of "with what" for the moment
there is no such thing as coated filament
it's all molten past the heat break
what the incomprehensible frick are you talking about?
Not a durable one which if you printed you'd already know. I have a printer but I don't try to print everything.
If oil centrifuges were not already so inexpensive (not the ripoff pictured) I would fit a vertically mounted electric motor with a suitable vessel since there is all sorts of stainless cookware and you can torch braze that without requiring a TIG or to OA weld it. Other potential parts include painting pressure pots.
literally anything can be 3d printed.
I printed my fiance an engagement ring. Well, she was my fiance.
See? Anything can be 3d printed.
Now print yourself a new fiance.
I suppose you could but cast aluminum or steel would be a hell of a lot better material to work with. I bought a waste oil centrifuge from PA biodiesel a few years back when e-bay had %20 percent off coupons for a short period of time.
Yes.
And used exactly once. Because the it will absorb the oil and be destroyed by the next day.
Which, frankly, can be ideal for low volume at home. Print one for a buck and throw it away when you're done.
>for a buck
Problem is PLA (or whatever you're using) is typically very expensive. Where 3d printing shines is in the setup cost. You can make custom "injection molded" parts in the time it takes you to download them and wait for the print to be done, while a shop would have to make molds and revise your drawings to include ejector pins and seam lines, then store them in between runs.
>Problem is PLA (or whatever you're using) is typically very expensive.
On what planet is PLA expensive?
https://businessanalytiq.com/procurementanalytics/index/polylactic-acid-pla-price-index/
>Because the it will absorb the oil and be destroyed by the next day.
Genuinely not a concern. PETG and Nylon are both common for 3D printing, and both hold up just fine to motor oil, synthetic oils, gasoline, diesel, kerosene, benzene, anything you'd encounter in waste oil. The toluene in gasoline may eventually affect PETG, but it'd take a significant amount of time as gasoline only contains around 1% - 20% toluene, and there's only a very small amount of fuel in waste oil. Just wiping the thing clean between uses would be more than enough for a PETG or Nylon centrifuge bowl to hold up quite well.
It's definitely way more expensive than injection molding, but it's not that crazy. Just shitty off-the-cuff math, a 2qt centrifuge bowl sufficiently strong is going to need about 1.5kg of filament, so $20-$30 worth of PETG. Just buying a WVO Centrifuge Bowl is in excess of 10x that price, though it'll be at least twice as big.
That said, still seems dumb. Maybe for fun, or as a highschool science fair project. You print a centrifuge bowl, then what? Still need a big outer bowl to put it in, not worth printing when you can get 5gal buckets for free or buy a big metal pot from the thrift store for $1-$5. Then you need a beefy motor, because that centrifuge bowl with 1/2gal of waste oil in it will weigh over 6.5lbs and need to exceed 2000rpm for the thing to be worth using at all, and you'll also need a speed controller, and seals for the shaft where it enters the outer bowl... I guess you could print some legs to stand it on, and an enclosure for the aliexpress speed controller. This just isn't much of a 3D printing project in my mind. If you already had a typical bowl centrifuge and were considering 3D printing a bowl for it as an experiment, that'd be neat, but if you want to build one of these things I wouldn't waste my time 3D printing anything aside from an enclosure for the electronics and maybe a knob or handle here and there.
>That said, still seems dumb. Maybe for fun, or as a highschool science fair project. You print a centrifuge bowl, then what? Still need a big outer bowl to put it in, not worth printing when you can get 5gal buckets for free or buy a big metal pot from the thrift store for $1-$5. Then you need a beefy motor, because that centrifuge bowl with 1/2gal of waste oil in it will weigh over 6.5lbs and need to exceed 2000rpm for the thing to be worth using at all, and you'll also need a speed controller, and seals for the shaft where it enters the outer bowl... I guess you could print some legs to stand it on, and an enclosure for the aliexpress speed controller. This just isn't much of a 3D printing project in my mind. If you already had a typical bowl centrifuge and were considering 3D printing a bowl for it as an experiment, that'd be neat, but if you want to build one of these things I wouldn't waste my time 3D printing anything aside from an enclosure for the electronics and maybe a knob or handle here and there.
Also this you could fabricate everything you need from steel easily. The only thing that really needs to be machined or properly balanced would be the inner bowl. A guy could probably use an old brake drum with a lip welded or brazed on and then balanced for the bowl.
>Just wiping the thing clean
No.
A 3d printed part is not an injection molded part.
It is pourous. The strings and layers create channels which will wick up and hold fluids and suitably sized particles.
It's the same reason you can't use 3d printed objects for food.
There will not be enough of anything harmful in used motor oil to degrade a print made in an appropriate material. The wiping it clean is to remove the bulk when it's not in use, limiting the total exposure and prolonging its life. Try harder next time.
The oil and the particulates will seep into the channels. The stressed induced by the spinning which force that fluid and those particulates along those sheer lines will peel it apart line an onion over time.
Do you want to have a machine which may fly apart and throw plastic shrapnel and oil everywhere at some indeterminate run?
No. So:
>Print one for a buck and throw it away when you're done.
Take your meds, your theory is schizo-tier bullshit.
Look, I don't have to convince you. When you have to pull plastic bits off the walls and sponge up the oil spray, all you'll do is curse me. "Fricker was right. Frick him." And so forth.
If you know what's good for you, you'll grow up and act like a man instead of some perpetual angsty teenager.
Sorry kid, you're wrong, and you don't know what you're talking about.
No it isn't. Maybe 12 years ago, but it sure as shit isn't anymore.
I await your results
Run oil centrifuge for two days for proofs
You gonna send me the parts? I have no interest in OP's little science fair project for myself.
Printing anything to hold a liquid is tough. Try it and see
Glhf
Not him but here: 3d print your shit and cover it in fiberglass and resin.
coat the filament
god boomers are moronic
>coat the filament
let's ignore the question of "with what" for the moment
there is no such thing as coated filament
it's all molten past the heat break
what the incomprehensible frick are you talking about?
anon obviously meant coat the filament after it's printed.
put sauce on the pig
anon, how profound is you moronation that the concept of slapping a coat of uerthane to patch up the layer gaps is lost to you
Not a durable one which if you printed you'd already know. I have a printer but I don't try to print everything.
If oil centrifuges were not already so inexpensive (not the ripoff pictured) I would fit a vertically mounted electric motor with a suitable vessel since there is all sorts of stainless cookware and you can torch braze that without requiring a TIG or to OA weld it. Other potential parts include painting pressure pots.