Dremel 3000 (EZ twist) dust shoe

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bengtec
Posts: 46
Joined: Mon Dec 29, 2014 2:09 pm
Location: Wiltshire, UK

Dremel 3000 (EZ twist) dust shoe

Post by bengtec » Sat Jan 24, 2015 2:26 pm

The little cutting I have done has made quite a bit of mess so I designed a dust shoe so I don't have to follow the cut with a vacuum all the time.

I remember someone mentioning using the EZ twist thing (in the image below) on the dremel as a possible mounting point for dust collection and it seemed to work in theory so I decided to put it into practice.

Image

I used 4mm polycarbonate (lexan) and this was my first time working with it. I definitely made some mistakes to begin with, I used the wiki as a starting point for feeds etc and what was there just didnt work out for me. it also didn't help that one of my y pulleys had been working its way off the stepper motor shaft which caused some pretty severe issues when combined with the feeds that I got from the wiki.

In the end I used the following (with a dremel 3000):
1/8" single flute up cut end mill
speed 8(ish) (22000-27000rpm)
500mm/min feed
200mm/min z feed
cut depth 0.5mm

here are all the pieces cut out (they all fit within the cutting area, just about):
Image

here it is assembled off the dremel, here you can see the dremel collet wrench in its place on the top:
Image

here it is on the dremel. you can see how it fits between the main body of the dremel and the EZ twist thingy:
Image

and finally with the vacuum connected. it is designed to fit a 40mm solvent weld pvc pipe as that is what my workshop dust collection uses. neither the inner or outer diamerer seem to be 40mm though, inside is about 38 and outside is about 43, the hole in the shoe is 42 and it fits very snugly:
Image

you can find the cad and gcode files here:
DXF: https://www.dropbox.com/s/mhdbamlpmqr79 ... e.dxf?dl=0
gcode (with above feeds and 3.2mm bit): https://www.dropbox.com/s/w3z8fge4tq9wy ... oe.nc?dl=0

after testing it is obvious why most dust shoes have some sort of skirt ... it doesnt pick much up without one! my plan now is to add this http://www.diy.com/departments/bq-plast ... 920_BQ.prd or similar.
Ben
Stock SO2 #7722, Dremel 3000, Arduino Uno, G-shield, GRBL 0.9g
Rhino>CamBam>Raspberry Pi with GRBLWeb

WillAdams
Posts: 8514
Joined: Mon Apr 09, 2012 6:11 pm
Location: Pennsylvania --- south of the Turnpike, East of US-15
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Re: Dremel 3000 (EZ twist) dust shoe

Post by WillAdams » Sat Jan 24, 2015 3:28 pm

Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

bengtec
Posts: 46
Joined: Mon Dec 29, 2014 2:09 pm
Location: Wiltshire, UK

Re: Dremel 3000 (EZ twist) dust shoe

Post by bengtec » Sat Jan 24, 2015 3:38 pm

and that was the thread where i saw about the ... thread! (on the dremel that is)

My hope was that moving the point where the vacuum is pulling air to around the cutting bit it wouldn't need a skirt. I was wrong! one advantage seems to be that I don't actually have to support the vacuum hose as the polycarbonate is strong enough to hold it on its own.

I haven't actually tried it while cutting yet, only moving the spindle over the wasteboard with the bits left from cutting the skirt, it may be that it picks up a fair amount of airbourne dust, just not the stuff already on the cutting surface.
Ben
Stock SO2 #7722, Dremel 3000, Arduino Uno, G-shield, GRBL 0.9g
Rhino>CamBam>Raspberry Pi with GRBLWeb

cmcta82
Posts: 68
Joined: Wed Apr 23, 2014 8:27 am

Re: Dremel 3000 (EZ twist) dust shoe

Post by cmcta82 » Sat Jan 24, 2015 5:08 pm

I love the idea of collet wrench in the top

clockit
Posts: 319
Joined: Sun Nov 16, 2014 11:05 pm
Location: California, MO

Re: Dremel 3000 (EZ twist) dust shoe

Post by clockit » Sat Jan 24, 2015 5:41 pm

I did something similar to keep the flying debris down to a minimum before I had finished my dust bood. I took the twisty thingy of my dremel, had a clear spray paint cap that I cut down slightly, the cut the center thing that goes around the nozzel in the top of the cap out, and then drilled a hole in the top of the cap. Screwed it on and while it didn't suck anything up it did do a pretty good job of keeping the debris out of my belts/pulleys/makerslide... :D
Shapeoko 2, Full Kit #7071, Makita RT0701C Router, 1000 x 1000 upgrade, Acme Z Axis w/Nema 17 Belt Drive

WillAdams
Posts: 8514
Joined: Mon Apr 09, 2012 6:11 pm
Location: Pennsylvania --- south of the Turnpike, East of US-15
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Re: Dremel 3000 (EZ twist) dust shoe

Post by WillAdams » Sat Jan 24, 2015 6:25 pm

I'm actually a bit concerned about having to collet wad in the machine where it might fall off and then be hit by the end mill.

Why not put it on the end plate?


Image
Shapeoko 3XL #0006 w/Makita RT0701 Router w/0.125″ and ¼″ Elaire precision collets
Nomad 883 Pro #596 (bamboo)

bengtec
Posts: 46
Joined: Mon Dec 29, 2014 2:09 pm
Location: Wiltshire, UK

Re: Dremel 3000 (EZ twist) dust shoe

Post by bengtec » Sat Jan 24, 2015 6:31 pm

the space for the collet wrench is about 2mm deeper than the wrench, there is a post in the middle that stops it moving side to side and it fits fairly snugly in the cutout. anything that causes the wrench to jump out of there will already have done a huge amount of damage
Last edited by bengtec on Sat Jan 24, 2015 11:17 pm, edited 1 time in total.
Ben
Stock SO2 #7722, Dremel 3000, Arduino Uno, G-shield, GRBL 0.9g
Rhino>CamBam>Raspberry Pi with GRBLWeb

clockit
Posts: 319
Joined: Sun Nov 16, 2014 11:05 pm
Location: California, MO

Re: Dremel 3000 (EZ twist) dust shoe

Post by clockit » Sat Jan 24, 2015 11:11 pm

Plus, it looks really cool there! And handy like a pocket on a shirt! I'm going to have to steal that idea! But to Will points, I might make a slot that it goes into, just in case. The way you describe it though, I really don't think that you're going to have any issues, plus it looks really cool! :D
Shapeoko 2, Full Kit #7071, Makita RT0701C Router, 1000 x 1000 upgrade, Acme Z Axis w/Nema 17 Belt Drive

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