HarvestRight Vacuum Pump oil funnel

thingiverse

I get tired of having to filter out the vacuum pump oil of my HarvestRight freeze dryer after every batch. I inevitably spill oil all over from the funnel and filter thingie that HarvestRight provides. This funnel permanently attaches to the vacuum pump and has a built-in filter that can be replaced. Just cut out a piece of coffee filter and put inside the filter ring. It also has a threaded cap. Also, a stand is provided to lift the pump high enough to drain into a food storage container to collect used oil to put back into the funnel. Two copies are printed and glued back-to-back. A FreeCAD file is provided if you want to modify for some other vacuum pump.