5/1/2023 0 Comments Printed translucent paper![]() It is also important to note that some materials with a higher index of refraction may also have low reflectivity, resulting in a higher level of transparency than other materials with the same index of refraction. Henceforth, transparent materials typically have a low index of refraction (the light passes through them at a similar speed as the light goes through a vacuum). Transparent 3D printed parts have a high level of light passing through them, via the phenomenon known as refraction. Examples of translucent materials include tinted car windows, wax paper, vegetable oil, stained glass, and frosted shower glass doors. ![]() Because of this, translucent materials have a relatively higher index of refraction. This is because the light changes direction many times within the material, some reflecting and some refracting. More specifically, if a printed paper with text on it is placed on one side of a translucent 3D printed part and read from the other side of the part, the text will not be legible because it will be fuzzy or unclear. Translucent 3D printing, or translucid 3D printing results in a light pattern through the material with a significant amount of diffusion or distortion. Translucent 3D printed parts are relatively clear, meaning some light will pass through them. Sometimes, as is done in this article, clear 3D printed parts are used to refer to color tinted or non-tinted. Post-processing methods such as spray coating, polishing, and resin dipping can help to achieve a higher level of transparency in clear 3D printed parts. It will typically have a higher index of refraction than non-tinted a 3D printed translucent or transparent part. Clear 3D printed parts are relatively see-through, but they are typically not polished to a finish that allows all light to pass entirely through them. Polyethylene Terephthalate (PET): 1.549įrom the above table, one may discern that some common 3D printing materials are not optimal if the desire is to perform clear 3D printing, due to their relatively higher refractive indexes.Ī clear 3D printed is tinted to a certain color, so it is not fully transparent.As is evident from the data in the following table, the higher the index of refraction, the less transparent a material is: More specifically, the index of refraction is the ratio of the speed of light in a vacuum to the speed of light in a medium. The speed at which it travels through a material, or the index of refraction, is an indicator of the transparency of the material. ![]() Light travels through different materials at different speeds. Transparent objects tend to refract light or allow light to predominantly pass through them, instead of the light bouncing off the surface.
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