Parametric Lens Caps

thingiverse

Need a lens cap? Here's what you do. Measure the outside diameter of the lens. Open the freecad file enclosed, and click on Dimensions (it's a spreadsheet). Fill the dimensions in. Wait a bit for all the settings to propagate. Export the "Finished Lens Cap" object as a .obj file (STLs come out with some errors). Turn off thin wall detection in your slicer (Very important.) Print. If the lens you're capping has a hard exterior you might want to increase the Diameter Clearance factor in the spreadsheet. Printing with soft material like TPU may also need a change here. Note: Requires FreeCAD 0.18.