Dust Boot Addition

For the longest time I"ve wanted to get a dust boot on my cnc, but since I need it to be removable for swapping bits, I had a hard time figure out a way to make that happen. Well with the recent addition of the weaver scope rail for adding on the laser, I got an idea.

So a week or so ago I ordered some brush strips off ebay, in 1" , 2" , and 3" sizes. The strips are 3/16" wide at the metal banding that holds the strips. I wanted to do a friction fit into the boots plate. So here is the design I came up with.


Using my HF Ring roller I rolled the strip brush to match the radius' of the plate

Next I milled out the plate, all done with a 1/8" end mill, however I think I mis-measured the straight areas.


No problem, I just cut the straight areas out and re-used the curved parts


Well, the first attempt, the exact 3/16" groove was a bit tight and blew out the mdf, so remilled a new plate with a little larger groove for it, also thickened the outer wall and made the vacuum hose hole a little larger (which was needed).


Using a straight screwdriver and hammer I tapped the brush into the groove, was a snug fit, but didn't split this time


Next I added a support with the scope mount. I used three 3" screws to fasten the support and give it rigidity.


Lastly, I connected up to my DC.

So a quick test showed no movement in the mount, it seems very rigid. I did have to switch it back to my shop vac as the DC is overheating the relay I have in use to toggle it on/off.

https://www.youtube.com/watch?v=5nEvhnI_XqI

And the best part is, not one chip on the table after it finished.

Nicely done!!

The ability to reach your collet with these things is paramount. Great solution! Legacy uses a ring with RE magnets around 'em and it just snaps into place -- i though that was clever, too.

Jason Beam said:

Nicely done!!

The ability to reach your collet with these things is paramount. Great solution! Legacy uses a ring with RE magnets around 'em and it just snaps into place -- i though that was clever, too.

Click to expand...

I've had some magnets on order, but since I use a rotozip, the shaft doesn't protrude as far as some other routers. I'm going to route out another base and use the 1" strips on it. With the weaver rail I can adjust the boot up and down as needed, so those two should fit my needs.

Brilliant...well done

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This is something I need to do.

I like something I can see through and with magnetics.

I have a pile of hard drive magnets that I will use.

Very nicely done Darren!

One thing I thought I'd mention, is how much quieter things run with the boot in place, especially when I can walk away and go get some work done in the office while it runs. Actually the spindle noise and the vacuum noise was muffled quite a bit by the dust boot.

Darren Wright said:

One thing I thought I'd mention, is how much quieter things run with the boot in place, especially when I can walk away and go get some work done in the office while it runs. Actually the spindle noise and the vacuum noise was muffled quite a bit by the dust boot.

Click to expand...

How long of a cable are you using to run it from your computer? I'm assuming the computer is in the office and the CNC is in the shop?

Brent Dowell said:

How long of a cable are you using to run it from your computer? I'm assuming the computer is in the office and the CNC is in the shop?

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CNC is just outside the office, but it's on it's own computer in the shop. I do plan to move that computer into the office, but will still be able to get by with a 6' cable.

Looks good, Darren! That's one of the next things on my agenda for my CNC. Which ebay vendor did you find with the brush material?

Brent Dowell said:

How long of a cable are you using to run it from your computer? I'm assuming the computer is in the office and the CNC is in the shop?

Click to expand...

I'll jump in here with my situation. I've had a desktop PC in my shop for years. It's the other side of a wall and a few feet down from my CNC. I'm using a 12' USB extension cable, a USB switch box, and a 3' cable from my PC to the Arduino I/O.

Bill Arnold said:

Looks good, Darren! That's one of the next things on my agenda for my CNC. Which ebay vendor did you find with the brush material?

Click to expand...

Zoro tools...http://www.ebay.com/itm/381023374454

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Bill Arnold said:

I'll jump in here with my situation. I've had a desktop PC in my shop for years. It's the other side of a wall and a few feet down from my CNC. I'm using a 12' USB extension cable, a USB switch box, and a 3' cable from my PC to the Arduino I/O.

Click to expand...

Ditto this ... i use cheap desktops so it really doesn't bother me to "risk" them -- i've had an old laptop out there for years now and it's been fine. The CNC desktop is also fine - - i ain't shoving dust into their intakes, but i ain't really doing much to keep it out, either. I will clean the desktop soon, just because it's been a few years and i am curious.

Bill Arnold said:

I'll jump in here with my situation. I've had a desktop PC in my shop for years. It's the other side of a wall and a few feet down from my CNC. I'm using a 12' USB extension cable, a USB switch box, and a 3' cable from my PC to the Arduino I/O.

Click to expand...

Very helpful. Thanks Bill!

The brush material can also be found at home depot as a door sweep.

Man, that Weaver mount is coming in handy for a lot of stuff, huh?

Darren Wright said:

I've had some magnets on order, but since I use a rotozip, the shaft doesn't protrude as far as some other routers. I'm going to route out another base and use the 1" strips on it. With the weaver rail I can adjust the boot up and down as needed, so those two should fit my needs.

Click to expand...

So what size bits will a roto zip accept? 1/8 and 1/4?
Thanks

Yes an yes, its got a jacobs type of chuck, so can adjust to a good range of bit sizes.

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