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MIT team develops 3D printer that's 10x faster than comparable 3D printers

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Re: MIT team develops 3D printer that's 10x faster than comparable 3D printers

#11
As hobby goes 3D printer really no good. Laser is fast and even some Cnc ok. But hours and hours ...

Hope this help as having a 3D model of your favourite item is great. Especially you can like programming iterate through it quickly.

Learning is part of the fun.

Re: MIT team develops 3D printer that's 10x faster than comparable 3D printers

#12
post #4

I wonder why they needed the laser pre-heater. I can't imagine it is that dramatically more effective than resistive heating. Even if it is, just having a longer pre-heater to make up for it would have to be cheaper. EDIT: Did a bit of research, a major benefit of laser heating is direct control of energy transfer so you can be sure your heating the plastic to the right temperature regardless of how fast its moving t…

It’s definitely possible that you couldn’t reach the speeds that they are with any kind of traditional heater cartridge. You need a lot of power directly on the filament to melt is at quickly as they are.

Re: MIT team develops 3D printer that's 10x faster than comparable 3D printers

#13
post #4

I wonder why they needed the laser pre-heater. I can't imagine it is that dramatically more effective than resistive heating. Even if it is, just having a longer pre-heater to make up for it would have to be cheaper. EDIT: Did a bit of research, a major benefit of laser heating is direct control of energy transfer so you can be sure your heating the plastic to the right temperature regardless of how fast its moving t…

The laser penetrates the filament heating it internally instead of only heating the outer surface. It's near-infrared (808 nm) so it heats the small cylinder of filament essentially uniformly throughout its volume.

It's also nice because they can vary laser power much more effectively than you can vary the temperature of a conduction surface.

https://arxiv.org/pdf/1709.05918.pdf

Re: MIT team develops 3D printer that's 10x faster than comparable 3D printers

#15
These are some really cool and novel developments at improving the speed of 3d printers. While some of these might take a while (or forever) to come to desktop 3d printers its great that advancements like these are being made to push 3d printing forward.

Re: MIT team develops 3D printer that's 10x faster than comparable 3D printers

#17
I've got a design for a printer that should be about 10,000 times faster than this.

It's really a game of data transfer speed. How fast can you transfer information about solid vs non-solid into space?

The velocity and acceleration of that printer is very impressive, but maxing out the movement speed of a single physical nozzle is not going to get us where we need to be in the future.

If anyone is interested in collaborating with me, I'd love to talk.

Re: MIT team develops 3D printer that's 10x faster than comparable 3D printers

#18
post #4

I wonder why they needed the laser pre-heater. I can't imagine it is that dramatically more effective than resistive heating. Even if it is, just having a longer pre-heater to make up for it would have to be cheaper. EDIT: Did a bit of research, a major benefit of laser heating is direct control of energy transfer so you can be sure your heating the plastic to the right temperature regardless of how fast its moving t…

The laser penetrates the filament heating it internally instead of only heating the outer surface. It's near-infrared (808 nm) so it heats the small cylinder of filament essentially uniformly throughout its volume. It's also nice because they can vary laser power much more effectively than you can vary the temperature of a conduction surface. https://arxiv.org/pdf/1709.05918.pdf

And it is low friction since it does not need surface contact.

Re: MIT team develops 3D printer that's 10x faster than comparable 3D printers

#19
post #12
post #4

I wonder why they needed the laser pre-heater. I can't imagine it is that dramatically more effective than resistive heating. Even if it is, just having a longer pre-heater to make up for it would have to be cheaper. EDIT: Did a bit of research, a major benefit of laser heating is direct control of energy transfer so you can be sure your heating the plastic to the right temperature regardless of how fast its moving t…

It’s definitely possible that you couldn’t reach the speeds that they are with any kind of traditional heater cartridge. You need a lot of power directly on the filament to melt is at quickly as they are.

Titan 3D Robotics has a extruder that claims to be able to print 1 pound of filament an hour which for ABS would be able 400 cm^3 (I think?)

I believe it's water cooled but still looks to be using traditional heater cartridges.

Specs: http://www.titan3drobotics.com/atlas/

Video: http://www.youtube.com/watch?v=mKPKIGcrlFU

Re: MIT team develops 3D printer that's 10x faster than comparable 3D printers

#20

How does this compare to Carbon? https://www.carbon3d.com/

It does not. That's like comparing apple orchards to single oranges. But if you want to just compare print volumes then the paper claims ~127cm^3/hr build rate in a prototype system with a peak extrusion rate of twice that.
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