41–50 of 86 posts
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…
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
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.
The bigger version of the same thing which can print 50 x 50 x 50 cm volume, the CR-10S5 is $629.
I have no connection to the manufacturer or Chinese vendors, just throwing the name of something I'm satisfied with out there.
Earlier quoted context omitted.
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
Right. That's what you get when you build a 3D printer like a CNC machine. Titan takes in pellets directly, rather than bothering with filament. They probably use a heating system and drive screw like an injection molding machine. They can print with more plastics than filament printers. They end up with a lot of moving mass on the print head, but that's what big motors and controllers are for. The Titan unit uses 14…
How does this compare to Carbon? https://www.carbon3d.com/
Yes there are DLP printers for enthusiasts, but the multi-stage process is not that great, as the chemicals are pretty noxious.
There are a greater range of cheaper plastics available for extruding.
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…