Riser ring for Nesco dehydrator

I have a NESCO FD-79 dehydrator for my filament spools, and wanted just a bit more space to more comfortably fit two spools. Since this dehydrator has the heater and fan on top it requires a double wall to blow warm air down around the trays. It's obviously somewhat larger than my Mini, so I split it into 6 pieces that connect with puzzle-piece type ends. I printed a 1 inch riser but also included a 2 inch model if you need more space. This model should fit any dehydrator which uses the LT-2SG or LT-2GP add-on trays.

This part does of course get subject to hot air for extended periods of time, so PLA is probably not a good choice - PETG has worked for me so far, with just a bit of warping. These models were designed for an 0.6mm nozzle but 0.4mm should work fine with a recent Prusa Slicer and Arachne mode. Any elephant's foot will make the sliding joints very difficult to assemble, if you can't tune that out of your setup then make sure to debur the edges in post processing.

I have added the FreeCAD source file as well as versions of the 1" and 2" risers with slightly smaller tabs in case your joints come out too tight - the .25mm_fit files have tabs 0.25mm smaller than the original, and the .5mm_fit files are 0.5mm smaller. If you would like to adjust the tab size in FreeCAD, use the tab_od dimension on connectors_sketch, and compare it to groove_id. To adjust the overall, change the height dimension on the outer_wall_profile sketch.