4" to 2" Vacuum Hose Adapter
thingiverse
I created this to adapt my standard (in the USA) vacuum cleaner hose to my Jointer sawdust outlet. It's 4" to 2", it would be a simple job to adapt it to fit any size hose. I use my shop vac with cyclone dust separator to remove the sawdust from all my woodworking tools. This one has been a pain as it doesn't have the standard 2" adapter (neither does my miter saw, he's next). I printed this in PLA it took about 4hrs but I didn't have to watch it ;-) The holes on either end are tapered so it should work with any manufacturing variance.
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