Little RP: Build This Open Source Resin 3D Printer

LittleRP is an affordable, flexible, and open 3D resin printer that lowers the barriers to entry for those looking to get into the exciting world of stereo-lithography printing.

Resin printing is a 3D printing process that uses intense light to transform liquid resin into a high-quality, finely-detailed 3-dimensional part. Light sources used for this type of printing are typically a +2000 lumen DLP projector or a near-UV laser and subsequently, yield parts with a much higher quality and detail than is possible with traditional 3D printing technology.

LittleRP is an affordable, flexible, and open 3D resin printer that lowers the barriers to entry for those looking to get into the exciting world of stereo-lithography printing.

From the beginning, the LittleRP represented the most simple, clean design while maintaining excellent print quality. Because of its simplicity, the LittleRP is both affordable to acquire and inexpensive to operate. Complicated mechanisms that would increase cost, such as the peeling mechanism, are redesigned for efficiency. By investing costs on the components that most directly impact printing quality, the creators of the printer have produced a kit with high accuracy, performance, and detail while keeping costs low.

LittleRP can print finely detailed items, such as jewellery, thanks to its high-quality linear motion components. Little RP brings highly detailed resin printing to the makers, model builders, and jewellers for whom current offerings do not meet affordability, simplicity, or accuracy needs. The design with laser cut materials and standard T-Slot extrusion allows anyone to build their own machine from scratch or modify an existing LittleRP machine to meet their specific needs.

The 3D printing speed of the LittleRP is about 2 minutes per 1 mm at 0.05 mm layer height. With these parameters, a 40 mm tall object takes approximately 80 minutes to complete. Check out the documentation on Wevolver, or more printer information below:

  • Build Volume: 60mm(X) 40mm(Y) 100mm(Z)
  • Build Speed: Approx 2 minutes per 1mm at .05mm layer height. A 40mm tall object would take approximately 80 minutes to complete.
  • Electronics: Arduino compatible microcontroller and GRBL Firmware.
  • Software: Envision Labs Creation Workshop: STL Slicer, Projector Controller, Gcode Sender.
  • Available Resins: Most general UV Curing Resin such as MakerJuice, SubFlex and SubSF, and MadeSolid MS resin.
  • Resin Vat: PDMS (Standard) and Teflon (Tested)

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