This is a customizable, minimal cyclone separator, that is meant to be printed, and then affixed to a 5 Gallon bucket with a lid. Hose size, Bucket size, Bolt diameter, Thickness, Coupling Length, Coupling taper, and some other parameters, are all customizable.

2.5" parts are included, others can be made using customizer.
Print parts, acquire a 5 gallon bucket with lid, cut holes, insert bolts, attach lid, attach hoses, jump for joy.

EDIT (4MAY2017): Error in blower_plate_x_dist and blower_stem_length corrected. Thanks Eric Satterfield/ualdayan (https://www.thingiverse.com/ualdayan/about). Tweaks to blower_taps(), still doesnt work great for small hose diameters, although slightly more intuitive. Fixed centering of parts in bucket. Added rendered 1.25" and 4" STLs.

Duplicator I3 PLUS

Yes

Yes

Low/Fast (300 um)

22% ?

1) Print it
2) Remove supports
3) Tap holes into bucket with 5/32"=4mm bit (for default 4mm holes, good for #8 bolts/nuts,) using the print as a guide.
4) With the prints in place, trace out the holes in the side of the bucket and the top lid.
5) Cut out the holes
6) Affix the printed parts with bolts
7) Attach top hose to your vaccum/ShopVac.
8) Attach a hose to the side/blow port, this is what will suck up debris