Incorrect exposure time is one of the primary reasons why 3D prints fail. In this article, we will use a resin calibration finder to guide you through the process of dialing in your resin correctly:
Print the Resin Exposure Finder
Step 2: Load the test print file onto your slicer software and key in your desired exposure value.
Step 4: Print the file with your resin 3D printer.
Step 5: Read the results and adjust as necessary.
*Note: When setting up the XP2 validation test on a slicing software, print at 0.05 mm and make sure to set the Bottom Layer Count at 4 and Transition Layer Count at 0. The XP2 validation test starts printing details at layer 5.
Reading the Results
Prints tend to shrink when underexposed and expand when overexposed. When analyzing an exposure finder, always check for the minor distortions in the small details. We will be using the XP2 validation test by Photonsters as an example.
Step 1: Pillars
The goal is to print out as many pillars as possible and to evaluate if the print is underexposed. When underexposed, some pillars may not appear.
Step 2: Negative Space & Text
The goal is to connect the tips. When overexposed, the tips will overlap; when underexposed, the tips won’t connect.
Step 3: Lines
The goal is to print out as many lines as possible while making sure that the rectangles don’t merge. When underexposed, some lines will not appear. Whereas, when the print is overexposed, the rectangles will overlap.