Although resin-based 3D printers are cool, they are not without their shortcomings. One pain point, especially for those who wish to record their prints, is that the translucent resins commonly used in stereolithography can make the finest details difficult to see. Inject paint into the model how [Andrew Sink] Decided to solve this problem, and the results were amazing.
Of course, this is not a problem faced by everyone who makes resin prints. Some resins are very opaque, and the fine details of the printed matter are displayed very well.But transparent resin provides a beautiful appearance for some projects and may benefit from [Andrew]Technology. It sounds simple: choose a hollow model-or modify an existing model-and print it out in the usual way, and thoroughly clean the inside and outside with isopropyl alcohol before curing under UV light. It may be a smart idea to use a curing station that allows ultraviolet rays to penetrate into the voids.
Finally, the cured model is injected with acrylic paint. There is nothing special here, just use a syringe to make shop acrylic. [Andrew] Seems to prefer thicker paint; we don’t want to guess, but intuitively thinner paint seems to have some advantages. In any case, be sure to provide enough ventilation holes for the replaced air. The video below has some front and rear shots, and this technique is great for showing off surface details. Besides, it looks pretty cool.
This seems to be a good technique worth remembering, and may even be suitable for hollow FDM printing done with transparent filaments. Still on the sidelines of FDM and SLA? We can help.