EnvisionTec Resale Value

Adigitalsmile

Adigitalsmile

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Just wondering if anyone has sold there EnvisionTec Perfactory printer and whats the going resale value of one of these machines?
 
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TECHARTISAN

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resale value...dropping fast.
There are at least 2 open source and one closed source system being released based on the same build technique priced in the $2-5k range.
 
DMC

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Jewlery dudes.....

BestCast in NY/NJ area may be interested, or other like them..

Throw it on ebay?
 
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Gita

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Hi Techartisan
What kind of 3d printer on 2-5k? can u give me a link on the website? can it do dental work?
 
DMC

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You'd need a fancy German DLP Projector with Pixel shifting technology and custom lens for very close focus, some slicing software, and a box with a motor or two and computer inside.

I think you'd be at $8k if you built it yourself.
 
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TECHARTISAN

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Well Gita
There is currently only one significant project that has launched (pre)sales already...B9Creator. There are several others in the works though. DLP based printing is a growing pursuit of the 3d modellers. 100 and 50 micron XY and 10-100 adjustable Z have become the "success standard" amongst the hobbyist community. Most envisiontec printers do 43 XY, thats only harder than 50 microns by a factor of mathmatics. A few newer Eteks can do 21 microns.

Where the Eteks fancy german projectors give them an edge is build area.
The b9 is using a 1024X768 projector so at 50 microns your build area is 51.2 mm (2.02″) x 38.4 mm (1.52″)...If you were to DIY with a 1920X1080 96mm (3.78") X 54mm (2.1375"). While that is greater than the older generation perfactory machines....the newer ones use much higher resolution multichip DLP systems and with resolutions like 2800 x 2100 you wont find off the shelf solutions to get the same build areas....

BUT....

in a more fair fight....
Compare to Eteks entry level dlp printer the aureus does 43 micron XY in a 60mm x 45mm build area....
$2375 for a B9
vs
$48,900 for the aureus.
More than 20X the cost for 7 microns and 8.8mm X 6.6mm....of course....If you upgraded to 1920X1080 and scaled to 43 microns youd have the aureus beat with a build area of 85mm X 46mm

Its worth noting....
a replacement bulb for a mini ddp $1049
a liter of wic 300 $989
and a replacement basement (replacement resin tray) $449
$2487 (a bit of supplies $112 more than the b9 printer)

Seems like if your thinking of a printer.....this project....or one of the others that will be showing up this year...is worth a hard thought.

Is it already a turnkey dental ready solution....no. In fact, I dont know of anyone dealing with dental applications yet. There are only a handful of these types of systems completed already. But the technology is quite basic. There are a number of people working on them. At this moment, The b9 kickstarter has 52 systems already spoken for....and its only been live for a week. The design and software are open source...so there will be a pretty decent size group of people doing development soon.
 
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JayH

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Tech,

Are all these systems you speak of single bulb, single point of projection systems like the Perfactory? Have you taken a look at the DWS and it's (for lack of a better word) rasterized laser light projection source? Care to comment on the difference (if any) in the accuracy of the built parts, especially as we move to the edges of the build envelope, between these two methods of applying curing light waves?
 
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TECHARTISAN

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Yes they are operating using the same principle....DLP projection. So yes there is a difference in pixel density from center to edge but this difference is less and less noticible the tighter the projection field/accuracy. Single large parts across the entire field might exhibit some distortion. The b9 is only using 1024X768....and that is still 786432 simultaneous position exposures. 1920 X1080 is 2073600 points. Now the dws008j uses an XY carriage to move the beam....its painfully slow in comparison...but doesnt suffer the "divergence issue" you elude to....However ALL other DWS models use a galvos to steer the beam...so while faster they too suffer spreading inaccuracies...from speaking with a couple of users...its far worse than DLP in that regard do to a single point being projected across the entire platform...versus what is effectively thousands of beams spread across the same area....but Ive no direct experience with their machines so....your milage may vary. There are a few hobbyists working with both galvo and carriage based laser systems as well....but none offering a finished result as of yet.

***....they refer to it as ERM enhanced resolution module....it actually only moves into two positions...shifting the image by half a pixel in X and Y.
It is the same priciple used by early rear projection TVs to fake higher resolution...they called it "wobbulation" this "feature" is being looked at by the hobbyist community as well but due to patents being in force is not being incorporated into public released designs as of yet. However it should be noted that this doesnt truly double resolution...it causes smooting of the pixels that approximates higher resolution in finish.

There is at least one group that is working on a multiple exposure system that would index the projector in the X axis during each layer to create a second offset exposure doubling build area at a given resolution....1920X1080 +1920X1080 =1920X2160
 
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YMS96

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Well Gita
There is currently only one significant project that has launched (pre)sales already...B9Creator. There are several others in the works though. DLP based printing is a growing pursuit of the 3d modellers. 100 and 50 micron XY and 10-100 adjustable Z have become the "success standard" amongst the hobbyist community. Most envisiontec printers do 43 XY, thats only harder than 50 microns by a factor of mathmatics. A few newer Eteks can do 21 microns.

Slightly behind the B9..and unfortunately not open source :(
DIY High Resolution 3D Printer -- Indiegogo
 

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