About this project
A 3D DLP uses a DLP projector and light cured resin to create a three dimensional part. The goal of this project was to create a low cost, high resolution printer.
Watch the video and see how the model is created layer by layer.
- Standard DLP projector with no modifications.
- UV cured resin
- Build area is about 76.8mm x 102.4mm x 125mm (3in x 4in x 5in)
- Print speed can be 5mm per minute or more
- Vat requires almost 2L of resin to print 3in x 4in x 5in
- The final price of resin will depend on the number of people who support this project. 1L of resin could range from $80 to $100. This is one downside to this style of printer, but it still works out to be cheaper. The kit will include resin!
What the kit includes
- Laser cut bolt together frame (and bolts)
- Stepper motor and driver
- Carrier board for microcontroller and driver
- Pulleys and belt
- Linear slide
- Printing platform
- Vat components
- Starter resin. The kit will include your first 2 Liters of resin!
This kit does not include
- Acer X1261P 1024x768 DLP Projector, it can be found for $350 to $450. (as of 6/14/2012)
- Common hand tools like Allen wrenches or soldering iron
Assembly Skills & safely use Requirements
- You must be able to safely use common hand tools.
- Know how to solder though hole components
- Know how to safely handle chemicals and follow MSDS guidelines.
Frequently asked questions
Any uncured resin can be reused for the next print. You only need to replace the volume that was used to print the object.
The expected shelf life of the resin is one year. To get maximum shelf life, you should store the unused resin in a dark, cool, dry area.
The concept is, but this kit is not. In theory you can use a higher resolution projector for a larger x-y build area. A 1920 x 1080 dlp projector can cost $1200 or more but could yield a 7.5in x 4.25in build area at 0.1mm resolution. To increase the z axis you would need a deeper vat. If you were to build this style of printer with a 7.5in x 4.25 x 8in build area, you would need 5.5L of resin or more.
Not with this kit. This kit was designed around the projector being focused for 0.1mm x-y resolution per pixel or a 102mm(4in) x 76.8mm(3in) build area.
Moving the projector farther away would allow for a larger projection area at a reduced part resolution. You would also need a larger vat of resin.
Both printers implement the stereolithography process with a DLP projector and light cured resin. The B9 Creator uses the “bottom up” method and Sedgwick uses the “top down” method. While the top down method does require a lot more resin, the mechanics of the printer are simpler. I also choose to use less expensive materials like a laser cut wooden frame as opposed to the custom anodized aluminum frame. The B9 Creator is also adjustable from 100 microns down to 50 microns in the x-y. Sedgwick was designed to only print at 100 microns (0.1mm) in the x-y.
- (30 days)