Vacuum Table

discussion of design changes / improvements / suggestions
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CalebPeters
Posts: 109
Joined: Sun Nov 10, 2013 12:20 am
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Vacuum Table

Post by CalebPeters » Mon Apr 13, 2015 4:24 pm

This vacuum table project was just an experiment to see if a design like this would work. I think it turned out pretty nice, and performed well considering I did zero research before designing and making it.

Image

The basic design goals that I was working around was to make it as thin as possible while maintaining enough vacuum clamping ability to hold a variety of materials down. I also wanted to be able to machine the entire top of the work area, so that it could be machine level. Finally, I wanted to be able to have it bolt directly to my aluminum table extrusion. For the most part I hit most of my design goals without too much problems. I still need to mill some countersunk bolt holes on the back to get rid of the two clamps on the back side, but it works great so long as you remember to put those clamps on the backside of the fixture. ;)

I tried a couple of jobs using the vacuum table. One of them with brass shim stock, and the other with some 1/4" thick oak. The shim stock didn't work so well, but I think that with a little bit of fussing I might be able to get it to work. The wood on the other hand, didn't give me any problems at all.
Anyways, here's a couple more pictures, and a video I made documenting the project.


Image Image

Material Dimensions:
Base: 25cm X 30cm X 1.905cm(3/4" MDF)
Work Area: 25cm X 18cm X 1.27cm(1/2" MDF)
Vacuum Tunnel Top: 10cm X 10cm X 0.635cm(1/4" MDF)
Attachments
Vac Table.svg.txt
Here is the SVG I made for this project. Just take off the ".txt"
(39.52 KiB) Downloaded 65 times
Shapeoko 2 #3164 : GRBL, NEMA 23 motors, 350W Spindle, Limit/home switches, Drag chain, X-Carve Upgrade.
DIY-Oko 3 #-1 : LinuxCNC, PC-450 with Super-Pid, Hall Effect Limit/home switches.

AFK66
Posts: 49
Joined: Tue Jul 08, 2014 3:03 pm

Re: Vacuum Table

Post by AFK66 » Tue Apr 14, 2015 12:10 pm

Really like the idea of being able to remove the setup if needed. Instead of being a permanent table top. Awesome work!
Shapeoko 2 - Acme Rod/Belt Drive, Nema 23 steppers, 300 Watt Spindle - other wise stock
Shapeoko 2 inspired custom build - 1500 X 1000mm, Routakit HD Z and X axis setup, Nema 23 276oz steppers, 800 Watt Spindle, Geck 540/ Soigeneris STDR-4C controlled.

Woodworker
Posts: 639
Joined: Tue Mar 11, 2014 1:37 am
Location: 5 miles north of Benson, NC

Re: Vacuum Table

Post by Woodworker » Tue Apr 14, 2015 1:10 pm

Very nice. I am going to do the entire top as a vacuum table when I expand the size of my SO2. I like the idea of the channels on the back. For the brass, it might help to have more smaller holes.
BRuce - SO2 #4798 - IC's Z axis upgrade, customized Z rail and Z motor mount, spindle Dewalt 611

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