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

Part 1
Introduction

Welcome
Veneering Basics

14 Good Reasons
Vacuum Press Uses
Vacuum Press Options
Overview

Questions & Answers
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Part 2a (Option 1 of 2)
Project: V2 Venturi Press

About Project: V2
Parts List
Build the Manifold
Build the Reservoirs
Assemble the Venturi
Make the Carrier
Wire the Press
Testing and Adjusting
Mods and Options
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Part 2b (Option 2 of 2)
Project: EVS Pump 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
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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
Maintenance
DIY Frame Press

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Part 4
Veneer Information

About Veneer
Veneering Glossary
Veneering Myths
Backer Veneer

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
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Part 5
Miscellaneous Info

Vacuum Forming
Vacuum Chucking
Vacuum Clamping
Vacuum Clamp Matrix
Vacuum Infusing
DIY Vacuum Manifold
Vacuum Press Gallery 1
Vacuum Press Gallery 2
Veneering FAQ
Veneer Glue FAQ
The Vac FAQ
Copper Veneer FAQ
Downloads (PDF's)

VeneerSupplies.com

Vacuum Veneering - Tips, Tricks, and More


What makes Better Bond™ Veneer Glue "Better"...

I consider myself very fortunate to have my opinion counted when it came to the creation of the Better Bond line of adhesives. I've worked exhaustively to make the Better Bond adhesives the most user-friendly, reliable, and affordable adhesives available. After months (and, in some cases, years) of re-formulating and tweaking these adhesives, I believe that you will find the Better Bond line of cold press veneer adhesives to be the absolute best.

For clarification, the term "cold press" simply means a pressing mechanism that does not require heat to set the adhesive. A vacuum press is probably the best use for these adhesives. For the remainder of this page, I'll refer to the Better Bond Cold Press Glue as "BBCP".

Testing an adhesive and displaying its numerical results does not really give you a sense of what it's like to work with a glue that has been perfected. You really need a side by side comparison of the working characteristics. That's why I sent BBCP adhesives to some of the most demanding cabinet and furniture shops in the country. These kind folks returned a vast array of comments. Some as simple as "it needs to dry faster". Others comments were a bit more complicated. One cabinet shop owners put the adhesive through a battery of man-made 'real life' tests and submitted a full report showing that a durable veneerpanel could be pressed, dried, sanded and finished in less than 2 hours. Amazing!

Ultimately, you have decide if your veneer work deserves the best veneer adhesive. Does it? Of course it does! But the truth is that you will never know how good the BBCP adhesives are until you try one. It will only take one project panel to see that these adhesives absolutely surpass the competition.

For me, the fact that the panels dry very quickly is a major plus. I've also grown accustomed to its forgiveness in application. Instead of requiring a special glue applicator or a measuring device, this glue goes down perfectly with something as simple as a basic foam roller or 1/8" notched adhesive spreader. Maybe these aren't the most conventional of woodworking tools but they are inexpensive and easy to find. The beauty of the BBCP adhesive is that when it's applied correctly, it produces a flawless panel every time.

Below are the technical details of the BBCP adhesive versus its nearest competitor. Armed with just the data below, I think you'll find that Better Bond does indeed, offer a better bond. But you need to try it out to really see how it can make a veneer project so much easier.

  Better Bond "Other Bond" Comments
Shelf Life 12 Months 6 Months Better Bond veneer glue is an exceptional value even for occasional veneer users.
Viscosity 8,500 cps (thicker) 4,500 cps (thinner) Thinner glues have a tendency to bleed through into the face of the veneer which effectively ruins the project.
Solid Content
(adhesive solids)
52% 42%

True solid content refers to the amount of glue resin in the mixture. Other free form fillers can be added which increase thickness but reduce bond strength. See the commentary at the bottom of this page for more information.

Pressure
required for set
9 lbs psi or
1,300 lbs per square foot
100-250 psi or 14,400-36,000 lbs per square foot Better Bond is designed for vacuum press veneering. Other glues require 10 to 20 times more pressure than a vacuum press can produce.
Set Time 45-60 minutes 2 to 3 hours Better Bond's set time is one of the shortest in the industry.
Open Time 10-12 minutes 15 minutes Better Bond has a slightly shorter open time due to its higher solid content. The open time can be greatly increased by lowering the shop temperature and "sizing" the substrate with a 50/50 coat of veneer glue and water.
Spread Rate 7 mils 7 mils This is the equivalent of 40 lbs per 1000 square feet of substrate material.
Chalk Temp 45°F 50° A negligible difference that doesn't affect the working properties in any significant way.
Dried Color Light, medium brown & extra dark brown Medium brown only Better Bond is available in three tones. The medium is the ideal general purpose color. If you require a glue line that matches your veneer, the other colors will come in handy.
Freeze/Thaw Stability Short term: Stable According to their website,
"KEEP FROM FREEZING."

The adhesive polymers in Better Bond cold press veneer glue will remain stable if the adhesive is frozen. However, the glue may require a some remixing or stirring. Freezing will not extend the life of the adhesive.

Retail Price $24.95 $24.99 Not a big difference but the advantages make the Better Bond worth the extra money.

Veneer Glue Solid Content
There is a lot of poor information going around the internet regarding the solid content found in any veneer glue. The most important criteria when judging a veneer is bonding performance.
The addition of the filler material can increase solid content but more solids do not necessarily make a better glue. Additionally, it is important to understand that a calculation of solid content can be derived from several factors. The key question is how much solid content comes from glue filler and how much comes from a free form filler used only to make an adhesive thicker.

High-solids adhesives don't always perform well in terms of bond strength. There is a performance window when it comes to solids content. The ideal solid content is one that minimizes overpenetration and maximizes bond strength. The viscousity of the Better Bond cold press glue allows it to properly penetrate the wood cells without the risk of bleed through.

The term "wetting" is often used to describe the ability of the adhesive to penetrate the porous surface of the veneer and the substrate. This is what gives the glue its bite. It is what makes an adhesive strong and durable.

Imagine a plate of pancakes. If you pour on a thick, goopy syrup then you have none of the flavor inside. It would sit on top and you might just it peel off. On the other hand, if you poured water on the pancakes, it would absorb too much and there would be nothing on the surface... where a bond would be made with a wood veneer. Finding the ideal solid content is not difficult but it does require extensive testing. We have done the work and what we found is that the Better Bond cold press veneer glue has the ideal solid content for all veneer species.

There are some veneer glues out there which claim a solid content of 70% or more. That is way too much for veneering with a vacuum press. I would also suggest looking at the MSDS sheet for the glue. One supplier of glue is claiming 70% solid content, yet the MSDS sheet for the very same glue says 51%.

Filler material can be beneficial if bleed through is an issue but there is a fine line between a glue that doesn't bleed through (yet has no adhesion) and a glue that bleeds-through and has excellent bond strength. The Better Bond cold press glue fits right in the middle. When used properly it has excellent adhesion and no bleed-through.

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