JoeWoodworker Veneer
The Official Website of this Non-Professional Woodworker ™

Part 1

Veneering Basics

14 Good Reasons
Vacuum Press Uses
Vacuum Press Options

Questions & Answers
Part 2
Project: EVS Vacuum Press

About Project: EVS
Parts List
Pump Selection
Build the Manifold
Build the Sub-Manifold
Build the Reservoirs
Make the Carrier
Final Assembly
Wire the Press
Testing and Adjusting
Mods and Options
Part 3
Vacuum Bagging

Vacuum Bag Basics
Polyurethane vs. Vinyl
DIY Vacuum Bags (A)
DIY Vacuum Bags (B)
Connect the Bag
Bag Closures
Bag Platens
Breather Mesh
DIY Frame Press

Part 4
Veneering Information

About Veneer
Veneering Glossary
Veneering Myths
Balancing a Panel

Veneer Glues
Veneering Tips
Substrate Materials
Flattening Veneers
A Sharp Veneer Saw
Jointing Veneers
Taping Veneers
Dealing with Defects
Curing Glued Panels
Veneering w/o Vacuum
Hammer Veneering
Iron-On Veneering
Veneer Storage
Amazing Bookmatches
Copper Veneer Guide
Paperbacked Veneer

Edgebanding Guide

Part 5
Miscellaneous Info

Vacuum Press FAQ
Veneering FAQ
Veneer Glue FAQ
Copper Veneer FAQ

Vacuum Forming
Vacuum Chucking
Vacuum Clamping Pedal
Vacuum Clamping Jigs
Vacuum Clamp Matrix
DIY Vacuum Manifold
Vacuum Press Gallery 1
Vacuum Press Gallery 2

Downloads (PDF's)

Project V2 Vacuum Press Information
Type: Adjustable Auto-Cycling
Vacuum: Air Powered Venturi
Page: 5 of 9
Venturi System

Assemble the Venturi
Mac ValveThe vacuum press will be cycling on and off during operation. To do this, an electro-mechanical valve is needed to open and close the airflow from your air compressor. I suggest the use of Mac Valve brand pneumatics simply because they are reliable and energy efficient.

The vacuum generator (also known as a venturi) operates on compressed air. See page #2 on this chart for the air compressor requirements.

Warning: Brass products may contain chemicals known to the state of California to cause cancer or reproductive toxicity.

Parts used in this section:

Mac valve
Breather fitting
Quick connector
Female to male check valve

Brass "close" fitting
Vac-Pro Venturi
1/4" Brass barb fitting (elbow )

  1. Apply thread sealing tape to all of the male sides of the fittings for this assembly.
  2. Attach the breather fitting to port #3 on the Mac valve .
  3. Attach the compressed air quick connector to port #1.
  4. Attach the brass "close" fitting to port #2 on the Mac valve .
  5. Attach the venturi to the close fitting so it is oriented as shown below.
  6. Attach the female to male check valve to the vacuum port on the venturi.
  7. Attach the brass barb elbow fitting. When tight, the fitting should be pointing in the same direction as the quick connector fitting.
  8. The final assembly should appear as shown in the picture below.

Completed Venturi Assembly


These instructions are provided for assembling the components available from If you are using different components the exact connections may vary. If so, your best bet may be to take the venturi and the valve to the hardware store and play around with the fittings until you find a combination that works.

Next Page

Yes, Joe is a practicing Catholic
The Vac FAQ
© 1998-2019
Terms & Conditions
Privacy Policy