Aren't powder based designs all SLS? I thought SLA was liquid resin, either Laser or DLP.

And, again, I think it's a damn shame Solidator is in purgatory. Surely there is a VC firm out there that would back those guys. The DEO is a Microsoft Mktg exec and the design looks great, well considered.

You are correct.  It would appear that some folks are confused about the different technologies.

SLA:
Stereolithography is an additive manufacturing process that works by focusing an ultraviolet (UV) laser on to a vat of photopolymer resin.
https://en.wikipedia.org/wiki/Stereolithography

SLS:
An additive manufacturing layer technology, SLS involves the use of a high power laser (for example, a carbon dioxide laser) to fuse small particles of plastic, metal, ceramic, or glass powders into a mass that has a desired three-dimensional shape.
https://en.wikipedia.org/wiki/Selective_laser_sintering

And, again, I think it's a damn shame Solidator is in purgatory. Surely there is a VC firm out there that would back those guys. The DEO is a Microsoft Mktg exec and the design looks great, well considered.

But since you brought it up, I haven't seen the quality of the scanner output, so I can't say whether it's a good deal or not.

Anyway, this is getting way off topic, so let's drop it.

I have no idea what it is you're looking at, but the Peachy printer page is up to date and in sync with the Indiegogo page.  The only thing that is different is the Indiegogo page updates are numbered, whereas the updates on the website are in the form of a blog.

I've seen all their images and their latest videos and if this is the best it can do, I'm not interested.

Unless of course, you're looking at a totally different gallery than I am...

So you don't think $100 is a good deal for scanner?

I've seen all their images and their latest videos and if this is the best it can do, I'm not interested.

Unless of course, you're looking at a totally different gallery than I am...

I wasn't referring to ripples from the drip systems, rather than ripples from vibrations around the room.  AS for the quality, all one needs to do is go to their web site and check out the gallery.

http://www.peachyprinter.com/#!gallery/c1q6m

I for one am not impressed.

That website has not been updated in 2 years. They no longer even use it. Everything about it is now on this sites where it was backed at.

https://www.indiegogo.com/projects/the- … r#/updates

Like I said $100 for a scanner is not a bad deal... So even if the printer does not do a good job you still get a scanner..

http://www.peachyprinter.com/#!gallery/c1q6m

I for one am not impressed.

carl_m1968 wrote:

Depends on the printer design.. The Peachy prints from the bottom up and there are a few other that lower the print into the resin as it prints.

The Peachy is about as far a departure from a proper SLA printer as one can get, so you can't compare how the Peachy functions to a SLA printer.

Proper SLA printers print by projecting a laser or UV light at the bottom of a vat that contains resin, then through a tilting process the cured layer is separated from the vat and lifted up to make room for the next layer.  That's how MOST SLA printers work, and in the context of the original question (referencing FormLabs), that is how the FormLabs work.

Therefore your assessment that:

The biggest issue with a Resin based SLA is curing.. The laser only hardens those areas that it actually makes contact with. So unless you print at 100% infill on every print you will have voids that will be filled with liquid Resin. You have to buy or build and additional UV curing oven where you can but the object in and flood it with UV for sever more hours to cure it through out.

... is off base.

Comparing the Peachy to a FormLabs is like comparing a bicycle to an automobile.  Yes, both will get you from point "A" to point "B", but that's where the comparison stops.

Edit:

So far as I can tell, the Peachy basically takes advantage of the fact the resin floats on top of water, so they use a drip system that can be measured and controlled to fill the container with water to lift the level of the build "surface".  Ingenious idea, even if it's somewhat limited.  The layer thickness can vary, and the surface can have slight ripples enough to make the surface quality suffer dramatically. 

All you need to do is take a loo at the sample, and you can see the quality is pretty mediocre at best.

Neat toy, and I can see the appeal of buying and playing around with a $100 toy, but that about it.

You must be looking at the old info.. They have made some changes and it now even includes a scanner for the same $100 price tag. That alone is worth the $100 even if the prints are not so good. The samples I saw on the indigogo site looked very close to injection mold quality and had very little noticeable layers. As for the ripple the drip system is designed so the drip does not actually go into the tank but into the feed tube that will still raise the water level but not make the water move on it's surface. That is below the waters surface. So you raise the level in the feed tube and the level in the tank will rise to match it.

Depends on the printer design.. The Peachy prints from the bottom up and there are a few other that lower the print into the resin as it prints.

The Peachy is about as far a departure from a proper SLA printer as one can get, so you can't compare how the Peachy functions to a SLA printer.

Proper SLA printers print by projecting a laser or UV light at the bottom of a vat that contains resin, then through a tilting process the cured layer is separated from the vat and lifted up to make room for the next layer.  That's how MOST SLA printers work, and in the context of the original question (referencing FormLabs), that is how the FormLabs work.

Therefore your assessment that:

The biggest issue with a Resin based SLA is curing.. The laser only hardens those areas that it actually makes contact with. So unless you print at 100% infill on every print you will have voids that will be filled with liquid Resin. You have to buy or build and additional UV curing oven where you can but the object in and flood it with UV for sever more hours to cure it through out.

... is off base.

Comparing the Peachy to a FormLabs is like comparing a bicycle to an automobile.  Yes, both will get you from point "A" to point "B", but that's where the comparison stops.

Edit:

So far as I can tell, the Peachy basically takes advantage of the fact the resin floats on top of water, so they use a drip system that can be measured and controlled to fill the container with water to lift the level of the build "surface".  Ingenious idea, even if it's somewhat limited.  The layer thickness can vary, and the surface can have slight ripples enough to make the surface quality suffer dramatically. 

All you need to do is take a loo at the sample, and you can see the quality is pretty mediocre at best.

Neat toy, and I can see the appeal of buying and playing around with a $100 toy, but that about it.

carl_m1968 wrote:

Also to mu knowledge all of the SLA Resin is translucent or even transparent. I have yet to see an item printed on an SLA Resin based system that was opaque.

SLA resins are available in opaque colors.  A company called MakerJuice, sells resins for most of the common SLA printers on the market, and they come in a variety of colors, and what's really cool, is you can mix different colors to achieve more colors and shades.

If you want a printer with fewer moving part, then you should opt for DLP/SLA printer.  It has no moving print head or laser, or mirrors (unless you count the millions of little mirrors that make up the DLP chip).  It simply projects an image for each layer, and the light cures the resin.  There are still some moving parts, like all SLA/resin printers, it has to have the tilting mechanism that separates the print from the build surface, but that's all.

carl_m1968 wrote:

The biggest issue with a Resin based SLA is curing.. The laser only hardens those areas that it actually makes contact with. So unless you print at 100% infill on every print you will have voids that will be filled with liquid Resin.

Depends on the printer design.. The Peachy prints from the bottom up and there are a few other that lower the print into the resin as it prints.
Incorrect, the SLA printers print the object upside down, while lifting it out of the resin tub, so as each layer is then separated from the build surface (bottom of the tub), the remaining resin simply runs out.