3 ms·

expensive is a matter of taste. The envisiontec 3SP costs well over 5K euros and can go up to 100K. You can only get a a price if you ask for a quote. Carbon 3D

expensive is a matter of taste. The envisiontec 3SP costs well over 5K euros and can go up to 100K. You can only get a a price if you ask for a quote. Carbon 3D does not sell their printers you have to lease them. Formlabs does sell you a printer at 3.5K but you can't use third party resins, so you decide. I actually know some open-hardware printers which sell for 5K.

sydd 7y ago
you can get an Anycubic Photon under $500, its a decent resin LCD printer.
- opencl 7y ago
  The patent mentioned in the article is specifically for continuous SLA printing (no pauses for lifting/peeling between layers), which the photon and other similarly-priced models don't do. I have one of the cheap SLA printers, and the lifting can occupy over half the printing time depending on layer height/resin type. The continuous printing machines seem to start in the several-thousand-dollar range.
  - hexa_storm 7y ago
    the rotating reflective polygon patent is this one https://patentimages.storage.googleapis.com/29/68/46/da50635a85b615/US9079355.pdf https://patentimages.storage.googleapis.com/29/68/46/da50635... I think it is even more relevant but somehow it did not get posted.
    - benjohnson 7y ago
      You'd think laser printers would be prior art - a rotating mirror (usually a hexagon) was exactly how older laser printers would scan across the drum to form out the print.
      - hexa_storm 7y ago
        You have to specify application in a patent. Riken desribed it for 3D printing in 1997 see https://sffsymposium.engr.utexas.edu/Manuscripts/1997/1997-2.. https://sffsymposium.engr.utexas.edu/Manuscripts/1997/1997-2.... but did not specify the use of laser diode as it was quite new at the time. It got only invented in 1996 by https://en.wikipedia.org/wiki/Shuji_Nakamura https://en.wikipedia.org/wiki/Shuji_Nakamura who got a patent for the laserdiode but little rewards and fought with his employer over it.
- hexa_storm 7y ago
  true it is a nice machine.. but laser bundles have advantages. You can direct other wavelengths, sinter powders and get to much smaller features. All these LCD printer, do show a pixel size but not a real spec or accuracy. If you go really high end even for mask projection with UV led you need expensive lights see https://www.idonus.com/activities/products/mems-products/uv-exposure-system.html?id=40 https://www.idonus.com/activities/products/mems-products/uv-... ... costs around 20K i believe.

sydd 7y ago

you can get an Anycubic Photon under $500, its a decent resin LCD printer.

opencl 7y ago
The patent mentioned in the article is specifically for continuous SLA printing (no pauses for lifting/peeling between layers), which the photon and other similarly-priced models don't do. I have one of the cheap SLA printers, and the lifting can occupy over half the printing time depending on layer height/resin type. The continuous printing machines seem to start in the several-thousand-dollar range.
- hexa_storm 7y ago
  the rotating reflective polygon patent is this one https://patentimages.storage.googleapis.com/29/68/46/da50635a85b615/US9079355.pdf https://patentimages.storage.googleapis.com/29/68/46/da50635... I think it is even more relevant but somehow it did not get posted.
  - benjohnson 7y ago
    You'd think laser printers would be prior art - a rotating mirror (usually a hexagon) was exactly how older laser printers would scan across the drum to form out the print.
    - hexa_storm 7y ago
      You have to specify application in a patent. Riken desribed it for 3D printing in 1997 see https://sffsymposium.engr.utexas.edu/Manuscripts/1997/1997-2.. https://sffsymposium.engr.utexas.edu/Manuscripts/1997/1997-2.... but did not specify the use of laser diode as it was quite new at the time. It got only invented in 1996 by https://en.wikipedia.org/wiki/Shuji_Nakamura https://en.wikipedia.org/wiki/Shuji_Nakamura who got a patent for the laserdiode but little rewards and fought with his employer over it.
hexa_storm 7y ago
true it is a nice machine.. but laser bundles have advantages. You can direct other wavelengths, sinter powders and get to much smaller features. All these LCD printer, do show a pixel size but not a real spec or accuracy. If you go really high end even for mask projection with UV led you need expensive lights see https://www.idonus.com/activities/products/mems-products/uv-exposure-system.html?id=40 https://www.idonus.com/activities/products/mems-products/uv-... ... costs around 20K i believe.