Post By bryan_machine
Post By J Henricksen
name and supplier for the "brush" around a woodworking dust cover for a cnc
I have been, and will continue, to make wooden parts on my cnc bed mill - which of course works quite well for parts that fit.
I've been steadily upgrading the dust collection.
When I see machines made for woodworking, their "dust collection enclosures" near the spindle are often surrounded by a kind of "curtain" which looks like a brush or broom. This of course allows air in, contains some amount of dust, and adjusts for the shape of the workpiece.
My Question: What is the searchable name for this, er. brush? (broom? curtain?) and where would I buy some to make such an attachment for my machine?
(Idea is that there's a box, which has this curtain/brush material for sides, the spindle runs inside this box, a big time dust extractor sucks dust out of it.)
I have purchased brush in many styles from McMaster-Carr. Search for 'conveyor brushes'!
These guys have a good selection.
They are called "strip brushes" and are available in many styles, along with the correct holders, from McMaster-Carr. I have purchased several different types this past year.
I used the sealeze brushes (www.sealeze.com) on my Shopbot CNC Router Retrofit when I built my Custom Dust Shoe Assembly. They work great. I cut a groove of the correct width into a piece of Plexiglas and pressed the rubber end of the brush into that slot. I originally purchased three different lengths. FXD112BL that has a 1.49 Brush Length, FXD120BL that has a 2.30 Brush Length and FXD130BL which has a 3.30 Brush Length. The 3.30 Brush length is O.K. but the bristle length is on the edge of being too long and the bristles don't hold their shape as good as the shorter lengths. I made the brushes 4" in diameter which provides good suction with my Harbor Freight 2HP Dust collector and 4" inlet hose. I made diameter of each brush 4.0 O.D. on each lower brush shoe attachment. Keeping the diameter as small as possible keeps the suction good even when a little of the dust shoe extends out over the edge of the part or fixture. Also, being able to switch to various lenghts of dust shoe bristles helps with maintaining good suction based on the tool length of the cutter being utilized. I also used a chip separator that collects all the larger chips and allows only the smaller chips and dust to go to the dust collection bag on the Harbor Freight Dust Collector. I did a ton of research on this subject and trust me this system works like a charm.
If you check out my video on my Retrofit Project on the Shopbot and go to 10:40 in the timeline you will see how it made my dust collector system and associated dust shoe. Shopbot PRT Electronic and Software Retrofit - YouTube
If you would like any additional information on my dust shoe design you can send me a private message and I will respond via regular e-mail.
Hope this is of some help.
Bingo - you all replied with exactly the right information. Thank you.
@helicopterjohn - will be like yours, but peculiar to my machine - screws versus magnets, etc.