how do resin printers work?
In: Technology
UV light can make chemistry happen when it hits materials, this is kind of how a sunburn happens. Sometimes this chemistry can be good, for example there a lots of UV curing resins, these are liquids that when exposed to UV light turn solid. The trick with a resin printer then is to light up just the right part of the resin, layer by layer, so the parts that harden form the shape we want. Modern LCD screens work great for this. An LCD screen is basically millions of light gates where the light can be turned on or off, so with a UV light behind it you can control which parts of the resin are cured with UV light
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