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Vacuum Pump sold separately.

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Rockler Vacuum Clamp Pod Kit

Use with a vacuum pump (sold separately) to hold your workpiece firmly in place, with unobstructed access to the edges and top.
Item #
86% of 100

Secures your workpiece from the bottom side, eliminating the need for traditional clamps that get in the way of sanding, routing and planing. Works on nearly any workpiece with at least one flat face, as small as about 4'' square. Ideal for CNC projects, routed signs and plaques, small workpieces, carvings and more. Kit includes two pods, 8' of hose, T-bolts and fold-down knobs that slide into your T-track table or slotted CNC table. Pods may also be screwed to a traditional work table or workbench with the included brackets.


  • No clamp arms allow ubobstructed access to the workpiece
  • Multiple mounting options: T-track, slotted CNC table or screw-mount
  • Quick activation and release—ideal for production type projects
  • Continuous gasket for a leak-free seal and strong hold
  • Ball valve opens when workpiece is pressed down, engaging suction
  • To be used with pumps that generate suction of at least 25'' of mercury (Hg)
  • A maximum of four clamp pods may be connected in series with suction of 25'' of mercury (Hg). Use a more powerful pump or multiple pumps if you wish to use more clamp pods simultaneously
(2) Vacuum Clamp Pods (1 with two barbed brass fittings; 1 with one barbed brass fitting and one brass plug)
(4) T-Bolts (5/16''-18, 3/4'' long)
(4) Rockler Fold-Down Knobs
(1) 8' Length of 1/4'' I.D. Polyurethane Vacuum Hose
(1) Extra 1/4'' Barbed Brass Fitting
(1) Extra Vacuum Gasket
More Information
Brand Rockler
Weight 1.6500
Tech Spec
  • Overall Dimensions (with mounting brackets and brass fittings): 5-3/4''W x 6-1/2''L x 7/8''H
  • Pod Dimensions (square pod only): 3-1/2''W x 3-1/2''L x 7/8''H
  • Pod Housing Material: Nylon
  • Gasket Material: PVC foam
  • Hose Fitting Material: Brass
  • Ball Valve Material: Stainless steel
4.3 / 5.0
4 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Vacuum pod review
Makes holding my material to the surface of my CNC a breeze.
A picture with the vacuum pads hold down a 1/2” thick maple piece.
4 vacuum pads that can be moved within the grid of my CNC Shark HD4.
February 15, 2020
6 months ago
Woodworking Experience:
Quality Product
This hooked to my CNC bed and vacuum pump and was operational in a few minutes. This has provided excellent new capability for my projects.
July 29, 2017
over 2 years ago
Woodworking Experience:
I recomend this product
July 21, 2019
1 year ago
Woodworking Experience:
Just Ok
The clamps work ok but don't seal as well as those that use a foam rope gasket. I can break the seal on these fairly easily by lifting the material by the corner. I really wish they would install the air lines in the same direction as the hold down bolts. When I put them on my CNC the air lines face out towards the CNC bridge causes them to hit. If these were offset on the same side as the hold downs I could clamp much larger materials. The flip handle nuts are not very durable, the screws stripped out on one the first time I used it.
March 20, 2018
over 2 years ago
Woodworking Experience:
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Browse 8 questions Browse 8 questions and 13 answers
Why did you choose this?
Rockler Store
a great help for holding those awkward parts for sanding/routing
navydiver on Jan 12, 2020
wanted a better way to hold down projects for hand routing.
Dan H. on Jul 30, 2019
a great help for holding those awkward parts for sanding/routing
navydiver on Jan 12, 2020
I have tried a few other vacuum clamping solutions, but none of them made me happy. I have high hopes that this solution will work for me.
R.A. K on Sep 14, 2019
wanted a better way to hold down projects for hand routing.
Dan H. on Jul 30, 2019
Online reviews appeared to be positive.
Rick C on Jul 24, 2019
Think they may work for my CNC
Jack B on Apr 10, 2019
Reasonably priced product, Rockler's good name.
Scott S. on Mar 29, 2019
Some things are hard to work in a vise
A L on Mar 26, 2019
Try it for routing.
John F on Jan 13, 2019
I will use these pods to hold circuit boards for mechanical etching.
Mike P on Jan 9, 2019
Already had Rockler Vacuum Pump
Robert A M on Jan 2, 2019
Makes a set of 4 pods for use on CNC machine.
t. r on Nov 27, 2018
Vacuum table for CNC
Albert Amantea O on Nov 26, 2018
CNC use
FREDRICK A. M on Jul 5, 2018
Thought it would be a useful accessory for my drill press.
James M on Jun 29, 2018
Outstanding reviews from other users.
Lee in Arkansas on Jun 28, 2018
want to try routing
RAYMOND W on Jun 22, 2018
To be used on a CNC Router Table. Hope it works
Fredrick M on Jun 22, 2018
Work right up to the edge on the top of my jewelry boxes
Dennis S on Apr 2, 2018
I have the pump.
Keith K on Apr 1, 2018
Use to hold small projects on my CNC
Raymond A on Jan 26, 2018
Matthew G on Dec 17, 2017
for use my routers
Aaron W on Dec 16, 2017
Sign making and glass cutting for most of the projects I work on.
James T on Dec 12, 2017
Hold downs for CNC and work bench work.
David R on Oct 1, 2017
I want to try them out on my CNC machine
Richard W on Sep 26, 2017
trying a new way hold downs for cnc
Larry on Aug 17, 2017
better idea for holding down project while cutting then using clamps
James P U on Jul 5, 2017
I have tried a few other vacuum clamping solutions, but none of them made me happy. I have high hopes that this solution will work for me.
R.A. K on Sep 14, 2019
Online reviews appeared to be positive.
Rick C on Jul 24, 2019
Is there a discount for a two set purchase of Vacuum Clamp Pod Kit?
Armond on Aug 11, 2017
Does the work piece seat onto the nylon pod housing when under vacuum? Or is it sitting on the compressed PVC foam gasket? With my Shark HD 2.0 I have experienced springiness in the Z direction with a similar system that seated the work piece on the gasket.
Roger R on Sep 3, 2017
BEST ANSWER: It will sit on the compressed PVC foam gasket, as this has to make up for eventual material difference. If you place the pods correctly under your work piece, there should be no springiness, that only happens if you have too much overhang.
How large of a workpiece can two pads securely hold? My CNC router has a 4' x 4' lability. I think I need at least 4 pads, perhaps more? Also, do the pads have enough holding power when cutting parts out, not just engraving?
Scott on Apr 9, 2018
BEST ANSWER: I have used vacuum pods and other vacuum clamps in the past.They all have a flexible gasket to seal the vacuum against the bottom of the work piece. I had to put thin shims in the get the parts being clamped to be "bottomed out" to get a reliable Z0 position. Also consider that for large work pieces, the piece itself with bend down toward the table with any Z force at all. I have four of these (2-sets) and still limit their use to small projects.
Winner on Oct 20, 2017
BEST ANSWER: The short answer is no.
What you need in a vacuum holding operation is enough psi to hold the part in question. Perfect vacuum is very close to 29 inHg. a small rotary vein vacuum pump might get to 22 a closed system. Shop-vacs are designed around cfm, not psi.
In order to use the vacuum pod clamps, can I use a vacuum pump that is constantly running, with constant vacuum pressure or do I need one that controls pressure once it reaches the proper vacuum pressure? Please advise!
Roy W on Jan 7, 2020
BEST ANSWER: I use a constant running vacuum. But, mine has a bleed valve that I set. So I just set the valve so I'm getting the vacuum pressure I want and its good to go.
How do you start and release vacuum for production work?
Paul L on Oct 27, 2017
BEST ANSWER: You turn the pump On and off as needed
I live at 6,000 feet. The perfect vacuum mercury column is 25 inches. My vacuum pump gets to about 21 inches. Is this enough?
Roger R on Sep 3, 2017
BEST ANSWER: "Perfect" vacuum is 29.92 inHG. This equates to 14.7 psi at sea level. 25 inHg equates to 12.3 psi, and 21 inHg equates to 10.32 psi.The area of the pod inside of the gasket is ~5.063 sq inches. So the pod with 25 inHg will have a holding power of 62.19 lbs. And the same pod at 21 inHg, will have a total of 52.24 lbs. What you are holding and the forces that will be applied, will determine if either is sufficient. This is theoretical, also to consider is any leaking of the system. Hope this helps
Can the pods be used with Sparmax air compressor model TC-63?
george t on May 10, 2017
BEST ANSWER: This item works best with a pump that generates suction of at least 25" of mercury.
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