Filament spool desiccant cylinder

I wanted a desiccant holder that would fit inside a filament spool.  I found a lot of models that used holes or vertical slots to allow air to pass through.  I don't like printing posts as it takes longer to start and stop for each one.  I drew this to print as a continuous line while still creating small gaps in the side walls.  I also make the mesh at the ends by printing alternating lines at each layer instead of holes so it prints cleaner and faster.  The mesh lines are 0.15mm thick so it's best to match this setting for your Layer Height so each layer prints correctly.

Print mesh to the build plate.  No supports necessary.

Edit:  I also have a slightly different version with internal threads and a flat cap do it doesn't protrude much past the spool itself.  Easier to stack and store.  There are 2 caps.  One has a wider flange so it wont fall into the spool if it has a slightly larger core diameter.