Slicing models
Posted by kooping
|
Re: Slicing models October 22, 2016 12:54PM |
Uh... why not just the outside skin very fine as a vase shape... then fill it with concrete, the commonest building material?
If you included support pillars to get the top roof right, it would be PLA reinforced concrete.
ABS reinforced concrete would be better, and you could cure it very quickly in a kitchen steamer.
You would have to sand (or even diamond!
)the fill holes, depending on your fill material. But it would set quicker than printing the whole thing.
And it would beat the crap out of purely printed part for compression strength. Heavier, of course.
You could even just print the skins and send them to the end user for filling. Less postage cost.
Edited 4 time(s). Last edit at 10/22/2016 01:07PM by DragonFire.
If you included support pillars to get the top roof right, it would be PLA reinforced concrete.
ABS reinforced concrete would be better, and you could cure it very quickly in a kitchen steamer.You would have to sand (or even diamond!
)the fill holes, depending on your fill material. But it would set quicker than printing the whole thing.And it would beat the crap out of purely printed part for compression strength. Heavier, of course.
You could even just print the skins and send them to the end user for filling. Less postage cost.
Edited 4 time(s). Last edit at 10/22/2016 01:07PM by DragonFire.
|
Re: Slicing models October 22, 2016 12:58PM |
Heh, concrete is pushing the envelope, but I like your thinking I had wondered about filling parts with resin, but it does assume that the part is both sufficiently 'water-tight' and all of a consistent height, which isn't necessarily the case. Either way, it would be nice to be able to print large parts with traditional infill, but reduce print time by using a big nozzle for the fill.
I had wondered about filling parts with resin, but it does assume that the part is both sufficiently 'water-tight' and all of a consistent height, which isn't necessarily the case. Either way, it would be nice to be able to print large parts with traditional infill, but reduce print time by using a big nozzle for the fill.
|
Re: Slicing models October 22, 2016 01:02PM |
Depends if you want it clear and pretty or cheap and Schwarzenegger.
I know what what I want when I'm designing a machine.
I know what what I want when I'm designing a machine.
|
Re: Slicing models October 22, 2016 01:20PM |
One extruder infill material, other extruder skin and support.
That would work, I think. Need to print skin and support watertight on the outside, liquid infill flow allowable on the inside (to use Honeycomb reinforcement pattern).
But it's then quite heavy if you do use concrete... cough cough... Nanocrete... cough cough. TM.
Yes, you cannot sell things as Nanocrete without a license, as I understand things.
Whether you can make things with your own version is a different kettle of fish.
It's just powder and water, self setting. All the energy needed gets put in at the cement making factory.
And ya don't need much cement, way cheaper than PLA I would think.
Edited 2 time(s). Last edit at 10/22/2016 01:32PM by DragonFire.
That would work, I think. Need to print skin and support watertight on the outside, liquid infill flow allowable on the inside (to use Honeycomb reinforcement pattern).
But it's then quite heavy if you do use concrete... cough cough... Nanocrete... cough cough. TM.
Yes, you cannot sell things as Nanocrete without a license, as I understand things.
Whether you can make things with your own version is a different kettle of fish.
It's just powder and water, self setting. All the energy needed gets put in at the cement making factory.
And ya don't need much cement, way cheaper than PLA I would think.
Edited 2 time(s). Last edit at 10/22/2016 01:32PM by DragonFire.
|
Re: Slicing models October 22, 2016 01:34PM |
Call the concept "Hardcore infill".
How well it works depends on a LOT of factors.
How well it works depends on a LOT of factors.
|
Re: Slicing models October 22, 2016 08:47PM |
Do not use concrete it will eat any plastic you use.
Out of the box thinking is easier when you never fitted in the box to begin with.
Out of the box thinking is easier when you never fitted in the box to begin with.
|
Re: Slicing models October 22, 2016 08:56PM |
If you have a dual extruder you could use a larger nozzle and that would speed up your infill time.
It's not a case of infill layer height more a case of infill layer width larger nozzle lays down a thicker line at the same layer height as the skin and should print faster.
Another option would be to build a double wall on your print, infill the inner wall and leave the cavity hollow to fill with resin or whatever you want. That way it would cut down on both the weight of your print and the material cost of your filling medium.
Out of the box thinking is easier when you never fitted in the box to begin with.
It's not a case of infill layer height more a case of infill layer width larger nozzle lays down a thicker line at the same layer height as the skin and should print faster.
Another option would be to build a double wall on your print, infill the inner wall and leave the cavity hollow to fill with resin or whatever you want. That way it would cut down on both the weight of your print and the material cost of your filling medium.
Out of the box thinking is easier when you never fitted in the box to begin with.
|
Re: Slicing models October 23, 2016 10:44AM |
Quote
Rlewisrlou666
Do not use concrete it will eat any plastic you use.
How very odd, there's the PLA section saying very, very few solvents affect PLA, there's you saying EVERY SINGLE brand of concrete is INCOMPATIBLE with EVERY plastic.
Must have taken you a while to try them all.
Some people can used concrete and plastic combinations quite well...
[www.youtube.com]
But of course, that video must be fake, as you have already tried every single combination of every plastic available on the planent with every concrete available all over the planet... or have you?
Edited 1 time(s). Last edit at 10/23/2016 10:51AM by DragonFire.
|
Re: Slicing models October 23, 2016 11:01AM |
Something in the chemical reaction of cement curing just makes plastic fall apart.
[youtu.be]
Also most readily available concrete/cement mixtures contain lye.
Edited 1 time(s). Last edit at 10/23/2016 11:04AM by Rlewisrlou666.
Out of the box thinking is easier when you never fitted in the box to begin with.
[youtu.be]
Also most readily available concrete/cement mixtures contain lye.
Edited 1 time(s). Last edit at 10/23/2016 11:04AM by Rlewisrlou666.
Out of the box thinking is easier when you never fitted in the box to begin with.
|
Re: Slicing models October 23, 2016 11:07AM |
Ok I meant PLA not sure about the others. 
Out of the box thinking is easier when you never fitted in the box to begin with.
Quote
Rlewisrlou666
Do not use concrete it will eat any plastic you use.
Out of the box thinking is easier when you never fitted in the box to begin with.
|
Re: Slicing models October 23, 2016 12:19PM |
Quote
Rlewisrlou666
Something in the chemical reaction of cement curing just makes plastic fall apart.
[youtu.be]
Also most readily available concrete/cement mixtures contain lye.
OK, time for me to get experimenting... the hydration of concrete going from liquid mix to solid is a chemical process. Thanks for posting that.
PLA does soak up water easily, ABS tends to be pretty waterproof once printed. That could be a key part of it.
Also, designing moulds / dies is a very skilled job, it's not like EVERY model designed is going to work, internal pressures while setting can be very high... one nozzle width of plastic just isn't going to contain those forces except with very, very small objects.
I'll put my white coat on and find something that does improve reprap, rather than just bike shedding the idea.
Edited 1 time(s). Last edit at 10/23/2016 12:21PM by DragonFire.
Sorry, only registered users may post in this forum.