![]() This also could be an indication of too little supports as well as exposure. In other situations of under exposure, supports do not form a strong enough attachment or fully form which results in models pulling from the supports entirely resulting in the print stuck to the FEP or partially formed and hanging from supports. If repeated across multiple members of the community this could also be an indication of too little supports. Still unsure? If printing presupported models check the community to see if others have the same issue on that model. If the issue occurs across multiple models on the build plate exposure could play a larger factor. How do you tell the difference? If you are printing a large build plate of models and only have a small area of pancaking it could be due to supports. Supports vs Exposure: Pancaking can also sometimes be an indication of too little supports in that area, especially for fine detail areas. If you have this occurring make sure portions of cured resin are not floating around in the vat of resin which could lead to other issues. It can also result in regions of the model missing from the model entirely such as a leg or arm. You can observe this where portions of the model go flat. One of the most common issues resulting from under exposure would be partial failure of the model. This issue might also not be immediately apparent but can be worsened during the post print cleaning and curing. This can be in all or only a portion of a print. Delaminationĭelamination occurs when layers of your model do not properly bond to each other resulting in layer separation. ![]() These issues commonly manifest as delamination, loss of intricate details, poor model adhesion to supports or build plate, and model flattening commonly referred to as pancaking. Some of the most prolific issues related to resin (SLA, MSLA, DLP) 3D printing is due to improper exposure and or more commonly too little exposure time. However how do you know that your real issue is revolving around exposure time? What does over exposure or under exposure look like? Below are some of the common issues associated with exposure time. When looking for guidance in resin 3D printing one of the most commonly suggested solutions would be to modify your exposure time. Prusa Slicer Exposure Time Setting Chitubox Exposure Time Lychee Exposure Time Note that all slicers denote exposure time as the same thing but bottom exposure can be referred to as burn in layers, initial exposure time and bottom exposure time. So now that we have talked about exposure times, where do we find exposure times in our slicer software? Below I have pictures of where to find this setting on three of the most popular resin slicing software: Chitubox, PrusaSlicer and Lychee. Where To Find Exposure Time Settings in Your Slicer? Very small to see with naked eye, suggested use with camera Only test to allow test of multiple exposure times at once How to Read test Github Writeup Advantages So how do you determine your exposure time? In this hobby there are several different types of exposure calibration tests to choose from each with their own strengths and weaknesses. In order to know if you are over or under exposing, read on to see signs and symptoms outlined in the exposure troubleshooting section. The trick is to dial in your exposure time, using different calibration tests. Signs of ideal exposure will successfully produce your print with a strong bond between the individual layers of the print without over curing or thickening details resulting in the loss of detail. ![]() So the leading question is “What does proper exposure look like? And how do I tell if I’m properly exposing my model?” Finding your exposure time for your unique environment will both give you confidence to experiment with new things and understand when and how your settings should change.Įxposure time can vary and be influenced based on several factors: ![]() While many companies and communities have recommended exposure time settings for your printer experience. ![]() This is arguably one of the most important parameters for resin 3D printing and is one of the most common sources of print problems for resin printing. Resin 3D printing (MSLA, SLA, DLP) is an additive manufacturing technology that utilizes photopolymers that when exposed to UV light will harden individual layers or slices in order to build on itself forming a three dimensional object.Įxposure Time is the duration of time the light source is emitting UV light to cure resin per sliced layer. Quicklinks: Overview, Calibration Tests, Slicer Settings, Troubleshooting, Bottom Exposure, Environmental Factors, Additional Resources ![]()
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