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Published on Jul 23, 2017
This is a follow up video to my guide on removing the hot mirror (IR and UV Blocking mirror) from my DLP Projector to reduce cure times in my DLP 3D Printer.
If you do remove your hot mirror, installing a UV pass filer is a must. The Halogen lamp in your DLP Projector emits enormous amounts of light in an array of wavelengths from UV to Infrared. Since most resins cure between 385 and 405nm there are only a few wavelengths that actually need to be emitted from the projector. The UV pass filter protects your optics and DMD chip from unnecessary light exposure and heat.
DLP Printers are a subset of SLA (Stereolithographic) 3D Printers, except instead of a laser they use High Definition Projectors to cure each layer of resin. If you want to learn more about DLP 3D Printers you can watch my overview video here: https://youtu.be/hQ21gbeYFYQ
The resin used in this video is Autodesk Magenta. Before modifying my projector at all I needed cure times of about 30sec and that was with gamma settings at their brightest and not being in Eco Mode. Since making the modification I've been able to turn my gamma settings almost all the way down and put the projector in ECO mode, and I still have gotten cure times reduced to 16sec.
If you have questions or suggestions be sure to leave them in the comments and like this video if you enjoyed watching.