The Peachy Printer Suggestion Thread

[quertz]

Hey Robert Goddard,

I think you haven't understood the goal of the Peachy team correctly.

To answer your questions:
No, it doesn't have to be a saline solution, but this is the cheapest way and according to the team they haven't yet had any problems with the resin interacting with that.
A solid layer between the fluids doesn't make any sense as the prints have to pass through that area so... how do you imagine it?
How would you want to have a floating build plate?
I cannot think of a reasonable way to have a layer focusing beams from an optical point of view.
The printed parts have almost no weight in water and so very little support structure is needed to keep them in place while printing.
Compared to other cosumer-grade techniques this is awesome and I don't understand how you want to improve in that (they are already using a solid build platform?)

The second post has nothing to do with the Peachy Printer.

Greetings,
quertz

[Robert Goddard]

Thank you for your reply. I am not sure I understand how you think I do not understand? Please fill me in on the goals I am missing? Not sure anything I said has any conflict with the goal. I refuse to see 4 doors.
I understand what they are telling you. From my experience I know a lot of plastics have issues with moisture. Salt and moisture are also generally considered a harsh corrosion environment. Throw in UV and I may be missing something here.
I think you misunderstood my point about a solid layer in between the layers. The idea is that you have a buoyancy layer that is solid. I mentioned several ideas on the direction you could go with it. I believe the idea of this thread is for ideas. Perhaps I also misunderstand the design concept. The part is free floating in a layer of water without any stability? I also disagree with you on the second post. Perhaps peachy printer may not be able to profit from it. If they are true to form, then I can see how it would be beneficial to the community as a whole. Unless you want to remain forever entrenched in the bondage of dependency. Then again, Zeni Kinetic burned me out of $1,400. It wouldn't surprise me how deep the roots of misinformation go in this industry.

[Deadbot1]

Thank you for your reply. I am not sure I understand how you think I do not understand? Please fill me in on the goals I am missing? Not sure anything I said has any conflict with the goal. I refuse to see 4 doors.

Not sure what 4 doors you are refusing to see, but I think your basic understanding of how a print is formed may be wrong.

I understand what they are telling you. From my experience I know a lot of plastics have issues with moisture. Salt and moisture are also generally considered a harsh corrosion environment. Throw in UV and I may be missing something here.

Yep, you are missing something. Yes, saline solutions are considered quite harsh for exposed mechanisms. However the saline is not being exposed to the mechanisms here. The resin floats on top of it and it is only touching at an interface layer at the bottom of a pool of resin. The resins being used are a UV curing epoxy(generally) that exhibits minimal water absorption. Most of the time, the water issue with FDM plastic extruders comes into play when they are heated. This design uses no heat. The uv is a collimated laser spot, not a widebeam of UV light.

I think you misunderstood my point about a solid layer in between the layers. The idea is that you have a buoyancy layer that is solid. I mentioned several ideas on the direction you could go with it. I believe the idea of this thread is for ideas. Perhaps I also misunderstand the design concept. The part is free floating in a layer of water without any stability?

Nope, you got it all wrong here. The print begins with a pool of resin on a stable base(the wire mesh or a layer of aquarium rock, etc) that hold the print in place. as the Z height increases, the saline is pumped(dripped) UNDER the liquid resin to raise it up. There is no solid layer being raised. the resin being used is just slightly less dense than the saline solution, so it floats on top, allowing the laser to hit the resin and cure a solid area, then the saline raises a bit and liquid resin flows over the edge and creates a new liquid layer ready for curing. The saline acts as both a Z layer mechanism and as a support mechanism for overhangs and such.

I also disagree with you on the second post. Perhaps peachy printer may not be able to profit from it. If they are true to form, then I can see how it would be beneficial to the community as a whole. Unless you want to remain forever entrenched in the bondage of dependency. Then again, Zeni Kinetic burned me out of $1,400. It wouldn't surprise me how deep the roots of misinformation go in this industry.

Sorry you got burned by another "company" that used Kickstarter style methods to defraud you. That is one of the hazards of such a system. That is also the reason why I think Peachy is legit. They are trying to make a system that doesn't cost two arms and a left testicle. If they were only trying to defraud you, they would be aiming for a bigger payday.