CNC Dust Shoe and Accessories

Overview:

I have a Onefinity CNC (woodworker elite) as well as a Huanyang water cooled, 80mm spindle.  Within my workshop, I have 6” spiral pipe for dust collection that narrows to 4” spiral pipe by my CNC.  I reduce that to a 2.5” flex hose to the spindle. 

I designed this dust boot to be modular and easy to replace or swap in different components.  You can print both base sizes and multiple brush holders which will give you a wide range of combinations to accommodate various bit lengths.

I’ve been using this for a couple of years now without any issues and have been very happy with it.  I finally felt comfortable sharing it with others.

Components:

-          Clamp: fits onto the spindle.  There are two versions, and both are compatible with the Onefinity Elite upgrade which has a tighter clearance between the spindle and the heavy duty Z-slider.

     o   Clamp – knob: tightened with a knob and ¼-20 x 1-1/4” bolt.  There isn’t a lot of room to turn the knob, but it doesn’t have to be extremely tight. 

     o   Clamp – wing nut: uses the same ¼-20 x 1-1/4” bolt but uses a wing nut to tighten it.  You can get this version tighter, but I haven’t had a problem with either version.

-          Base: attaches to the clamp with 3/8” magnets and directs air flow up through the hose.  There are holes for locating pins in the base and clamp, but with strong magnets, these are not needed.  There are multiple versions of the base:

     o   Base-58: This is the one I use the most

     o   Base-58 (with tabs): This is the same as the standard one, but it has built in tabs to make it easier to separate from the clamp if your magnets are very strong.

     o   Base-45: This is a shorter base that works well with short bits like V-bits.

-          Brush Holder: This snaps to the bottom of the base with ¼” or 6mm magnets.  The brushes get inserted into this, and it is handy to have multiple versions of different length brushes.  You can print the “Brush Length Template” which aids in determining how long to cut the brush (just shy of 9-3/8”).  The brushes fit tight into the holder, but I recommend spreading a thin amount of CA glue into the holder first.

-          Hose Adapter: the 2.5” flex hose clamps to the adapter, and the adapter snaps onto the clamp with ¼” or 6mm magnets.  This makes it easy to remove the hose and use it as a vacuum to cleanup the area when needed.  There is a notch cut into the adapter that fits around the screws of a JTech laser mount if one is installed.

Required Hardware:

-          ¼-20 x 1-1/4” bolt (1): this tightens the clamp onto the spindle.

-          ¼-20 Heatset Insert (1): if using the knob version of the clamp.

-          ¼-20 Wing Nut (1): if using the wing nut version of the clamp.

-          6mm x 2mm Magnets (16+):

     o   Hose Adapter: 4

     o   Top of Clamp for Hose Adapter: 4

     o   Bottom of Base for Brush Holder: 4

     o   Each Brush Holder: 4

-          3/8” x 1/8” Magnets (14):

     o   Underside of Clamp: 7

     o   Top of Base: 7

-          Brushes: I recommend having multiple sets of brushes to handle various bit sizes.  The included holder is sized to fit McMaster-Carr’s Easy Cut Conveyor Strip Brushes.  Specifically, the ones with a Nylon Plastic Backing that is 1/8” wide x 3/32” high.  They are available in 1”, 2” and 3” lengths and can be ordered by the foot or in 3’, 5’, 10’ and several other lengths.  Each brush holder will require a segment that is approximately 9-3/8” long, and a template file has been provided to easily measure and mark off the correct length.

  https://www.mcmaster.com/products/brushes/conveyor-brushes-1~/easy-cut-conveyor-strip-brushes~~/

Printing:

I recommend printing the base and clamp in PETG, especially the clamp for a little more flex.  I print the hose adapter and brush holders in PLA.  Only the bases require supports, and I recommend printing them in the orientation shown to hide the support marks.  Most printers handle the bridging across the brush holder channel and magnet holes just fine, so I would not use supports for those areas.  I also recommend sanding this area to help with air flow.  I also recommend using an outer brim if printing a knob.

Other Accessories:

-          Hold Down System: https://www.printables.com/model/850153-cnc-hold-down-system

-          Other Onefinity and JTech upgrades can be found on my main page:  https://www.printables.com/@dumgoat_1274190/models