Parametric Olympus reversible lens hood sized for 75-300

thingiverse

This is a remix of http://www.thingiverse.com/thing:240706 with a few enhancements: It separates the bayonet flange from the inner end of the hood, so the diameter can be enlarged for reversibility. There's a test mode (in the .scad version) that prints just the bayonet, for quick size testing. It's a bit shorter (but this is easily controlled by parameters). This is currently sized for a good fit on the Olympus m4/3 75-300mm, but is probably adaptable to other Olympus variations. Pictures show an aftermarket copy of the LH-61E hood for comparison. UPDATE The v4 files incorporate a few improvements. There's now a locking nub on the bayonet. This still isn't quite right, so look for a v5, but the fit is snugger. There's a "filter" mode that creates a flat rim instead of a hood, so you can glue on Baader AstroSolar film (I did this for the eclipse). Current files: lens_hood4.scad is the parametric creator, from OpenSCAD lens_hood4.stl is the rendered hood lens_hood4-filter.stl is the filter-mode version lens_hood4-ringonly.stl is just the bayonet ring, for test fitting Print Settings Printer: MonoPrice Select Mini Rafts: No Supports: No Notes: Print the test ring first to see if it fits.