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Peachy Printer - The world's first $100 3D Printer

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Re: Peachy Printer - The world's first $100 3D Printer

#61

Post by 542458 »

jevanish wrote: post #19
SwellJoe wrote: post #15

This is the first 3D printer I've been excited about since the very first one I saw maybe a decade ago. The reason is that it is actually a novel approach that I can see is in its very infancy...and it's clever as hell. The reality of 3D printers is that at this stage of their development, they aren't useful for a lot of people; at least not useful enough to make them a cost-effective purchase. This, however, begins…

I've heard the resin resultant objects are pretty brittle at least on the Form1, so I'm not sure it could do what you're hoping. You would be better served with an FDM printer if you want to be able to use it as you describe, but then you need to be careful of the direction of the grain (or rather, the layers) so that they're opposite the direction of stress if there's specific ways it will take stress.

> pretty brittle at least on the Form1

This is true (at least on the SLA printer I've used). The problem is that the resin never stops UV curing, so it just gets more and more brittle over time. Small parts get really fragile (Maybe you can paint/cover them to avoid this - I'm not sure). FDM or SLS printers are generally better with functional parts, while SLA is better for prototypes that don't need to last.

Re: Peachy Printer - The world's first $100 3D Printer

#62

Post by stephengillie »

kevingadd wrote: post #7

I wonder how much error is introduced by the use of the headphone jack to drive the printer - you've gotta deal with line noise from the computer's sound card, mixing latency/glitches from the OS, and the device sampling rate, along with any noise introduced on the audio cable. Does a 3D printer like this not actually require high-precision data to work correctly?

I was wondering why they didn't use USB or something similar. How will they interface with, e.g. laptops or phones that don't have a microphone jack? If they're committed to using audio to drive the device, what about a usb audio device, similar to a usb headset with microphone?

On the other side of the concept of using audio as their output system, what would a cube sound like if played through speakers instead of through their printer? And how would a Mozart symphony look when printed?

Re: Peachy Printer - The world's first $100 3D Printer

#64

Post by sliverstorm »

kevingadd wrote: post #7

I wonder how much error is introduced by the use of the headphone jack to drive the printer - you've gotta deal with line noise from the computer's sound card, mixing latency/glitches from the OS, and the device sampling rate, along with any noise introduced on the audio cable. Does a 3D printer like this not actually require high-precision data to work correctly?

That's all a telephone line modem ever was, a specialized soundcard...

Re: Peachy Printer - The world's first $100 3D Printer

#68

Post by moocowduckquack »

kevingadd wrote: post #30
anigbrowl wrote: post #25

Earlier quoted context omitted.

That's not true at all and hasn't been for a long time. Maybe if you're mixing more than 8 tracks on a low-power CPU, but even a chromebook can do that sort of thing. Even my phone (several years old) can do that. Playing back stereo audio (which all that's required here) is something that can be done from a device that fits on your keyring. What you're arguing hasn't been true since the 90s. Certainly, it would be b…

I'm not talking about 'can you play back audio', I'm talking about 'can you play back audio with zero glitches'. This becomes a problem of scheduling precision, whether or not scheduling will 'stall' if a driver hangs while processing an IRQ, whether or not the graphics driver has a potential to hang due to a rendering operation, etc, etc. These are all a reality on modern desktops even if they're fairly rare (I don'…

use the rt kernel - https://rt.wiki.kernel.org/index.php/Main_Page

Re: Peachy Printer - The world's first $100 3D Printer

#69

Post by Groxx »

rorrr2 wrote: post #49
jlgreco wrote: post #28

Earlier quoted context omitted.

It looks like the resin they are using is "Makerjuice" ( http://makerjuice.com/ ). I don't know anything about that resin though.

$40/liter for small prints $45/liter for large Not cheap if you want to print anything larg-ish.

Eh, only if you make the large-ish thing solid - this can easily make hollow / drain-able structures. And since it's partially supported by the liquid as it's built, you don't need as much temporary supporting structure as an extruded plastic version.
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