The Peachy Printer Suggestion Thread

[snow]

i actually had a few thought about printing speed and accuracy some of my ideas will definitely break the 100$ barrier but maybe something for a pro version?
OK so here are my thoughts i would use a peristaltic pump instead of the drip system.those pump are inexpensive easy to make and can be very accurate (probably more accurate that the drip allowing more control over z axis and no wasted time waiting for the drips) i imagine you could even use the drip system as a bootstrap and print the pump yourself.
i was thinking that if you use a floating base to limit resin use and focusing issue you might try to use the electrical resistance of the saline to get a very accurate feedback on effective water height (z axis)
maybe the use of low power supersonic transducer can solve the problem of the resin not flowing fast enough. you could induce microscopic "waves" or a kind of surface creeping to speed up resin flow onto the object
maybe you could investigate the simultaneous use of multiple peachy to speed up bigger objects (each peachy printing a part of the whole at the same time)
i have one last idea which is kinda "out there" don't know if its even possible but how about using some kind of maglev technology to suspend the mirrors (no wear and tear because there are no strings and possible even reduced resistance to movements)
keep up the good work everyone ..

[kmak]

Hi Rylan,GyroLaserFrame1.jpg
I was thinking for long time over the passed holydays and I came to conclusion that you do not need mirrors at all to achieve same functionality of printers head. Mirror are good but simpler solution is Gyro Sphere. Using same effect of gyro movement rotation of the ring around x- axes and rotating with ring around y- axes. From SF movies closest analogy is “Deep Space 9” station which has “horns”. If you take two of these objects, one smaller (holds laser) and one bigger connected with x rotation axes to each other and bigger one connected with frame through y rotation axes.
Horns on each of rings are spherical solenoid cores which are controlled with wire windings. Movements are controlled at the same principle but no mirrors. Default position of the laser is centre of the structure hanging like pendulum. Gravity does its work and when is not current in the windings it is stabile in the origins. Following drawing showing my idea.

[kmak]

3D version of idea is following....GyroLaserFrame3D.jpg hope next iteration of product will concider this option. Cheers

[Anuvin]

I assume that the arms/horns are driven by a stepper motor or something? I am having trouble figuring out the exact method of mechanical movement in your design.

[Feign]

Kmak, the machine you are describing is called a gimbal (a "solenoid actuated double gimbal" if you want to be precise.). They were used all the time in old mechanical gyroscopic mountings and are still used for things like camera positioning and such. Consider though that you need to move the beam around in a somewhat gyroscopic motion very rapidly to project the image needed for the printing. Moving the actual laser housing at that speed can shake loose connections or even damage the lasing chamber itself over time. Also, having it subject to gravity like a pendulum means it will swing back out of position with every movement due to momentum.

I don't mean to burst your bubble. Hope you keep coming up with ideas.

[kmak]

Hi,
If I translate your text properly mass is the problem!? Inertia as they call it (I agree that could be problem). This is motorized “gimbals” :-D . What is interesting to now is “speed” of moving laser beam necessary to do proper work. My proposal is simple way to control device laser beam to hit surface directly. Not through mirrors reflection. Hope there are some electric driven devices (small pancake stepper motors) with high torque and enough speed to do the job. Bubble burst is not at all case. It is idea (for the next iteration in R&D) how to make product printing head more solid. Changing (ageing) mirrors would be fiddling job, replacing laser body and electronic is much easier. You have limited movements x and y axis 30 degrees each (not full 90 degrees). Yes, this is “The Peachy Printer Suggestion Thread”. More people involved (in thinking and presenting thoughts!) are key to get best results. My motive to write here is not money or fame. For me goal is if one of my ideas becomes alive in this project no one happier than me. Or my idea from bubble will provoke younger / older people much more and better educated in sophisticated technologies like this. And that is also something I would like to start too.
Keep up good work and “Live long and Prosper!”

[Anuvin]

The Peachy is so inexpensive, that instead of changing the mirrors every few years, I will just buy a new one. I spend more than that on my boots every few years.

I think this kit has awesome tools for cleaning delicate stuff like the mirrors. http://amzn.to/1lSlKst

[kmak]

Hello,
Continuing line of suggestions for (next R&D cycle) I have some interesting motion devices on this page here: http://pcbmotor.com/pcbmotors-17/ and video clip which shows endless options here: http://www.youtube.com/watch?v=VbTUsluY2xU
Please comment.
Cheers,
Karlo

[Martin Isaksson]

Hello new here i was wondering a few things about the project.

Is it possible to add multiple peachy printer side by side to increase output (by this i meant working on the same model)? Is there a limitation that makes this impossible?

Would it not be possible to create a peachy printer from a old DVD/CD/blueray drive of a stationary pc or rather a laptop with the drive open (this link show that the diode is mounted in the part that is moving out from the drive in some laptops,http://www.youtube.com/watch?v=pz9b7aLg5Vc ), like the Form 1 it can print from the bottom but with help of mirors that can be moved by ether sound like the original or something else.

I mean the parts are there at least one motor that is spinning the drive must be easy to utilize for moving the model upwards? the laser diode is moving to if i'm not mistaken that can be used for something? Sure developing drivers for each drive will be a hassle if they are very different, but imagine a 3D printer you pop in your laptop cds place to print a object, this makes the printer very inexpensive since most of its parts are there.

Thanks for answering my novice question

[Feign]

Is it possible to add multiple peachy printer side by side to increase output? Is there a limitation that makes this impossible?

From what I can tell, there's nothing stopping you from using more than one Peachy on a tank, as long as there's only one drip sensor on the tank.

Would it not be possible to create a peachy printer from a old DVD/CD/blueray drive of a stationary or rather a laptop in open mood,

Something was definitely lost in the translation to English here, but I was under the impression that Grayston's original prototype was built out of scrap computer parts, so a dissected blu-ray was probably in the mix somewhere.

like the Form 1 it can print from the bottom.

I can think of two ways that the Peachy could be rigged up to print upside down... But there would be no benefits to doing so, and several drawbacks.

I mean the parts are there at least one motor that is spinning the drive must be easy to utilize?

But the Peachy doesn't need any motors to begin with.

the laser diode is moving to if i'm not mistaken.

In a disk drive it does, but in the Peachy, the laser doesn't need to move at all.

Sure developing drivers for each drive will be a hazle if they are very different, but imagine a 3D printer you pop in your laptop cds place to print a object, this makes the printer very inexpensive since most of its parts are there.

All the parts are there if you have a supply of CD drives around, I guess. But a printer that fits into a drive bay won't have a very large print area at all.

Thanks for answering my novice question

No problem!