21 May. 1977|
Glue wood veneer to metal,custom home entertainment center plans,wooden power boat design,wooden book rack for wall - PDF Review
Wagerer Bond veneer mucilage is designed for economic consumption with altogether woodwind legal instrument species but is ideal for medium toned veneers such arsenic elm oak lacewood bubinga and well-fixed. One gallon of glue should cover between 175 and 225 square feet of substrate material which is roughly both sides of three 4x8's. Veneers have a tendency to curl up quickly when they are placed upon a glue-prep'd substrate. Note: Once under vacuum, the blue tape really sticks well to the veneer so removal can be tricky. A good test to see if you have applied the correct amount of glue is to place a pencil mark on the substrate and apply the glue. Flash Time - The amount of time you need to wait before setting the veneer onto the glued substrate. Open Time - The amount of time between when you apply the glue and when the material is placed in the press. Pot Life - The length of time in which a glue can be used after it is mixed (PPR's are mixed with water.
Yellow glue (PVA) is probably the first glue that comes to mind when you say "glue" to a woodworker.
Iron-on veneering is the latest craze in woodworking because it's easy, convenient, and inexpensive. Contact cement is only good for paperbacked veneers and 2 ply wood veneers because the backing minimizes the veneer movement. To the best of my knowledge, the most user-friendly adhesive for an outdoor project is Ultra-Cat™ veneer glue. If you are planning to use a raw wood veneer, you may not find an adhesive specifically made to bond to plexiglass, glass, or plastic. Paperbacked veneers can often be succesfully bonded to these substrates if you order the veneer with the PSA (or pressure sensitive adhesive) option. A few woodworkers have sent me email indicating success only with paperbacked veneer and solvent based contact cement (water-based contact cements will not work). For premixed veneer glues such as Better Bond Cold Press Adhesive and Heat Lock, your nose will tell you the condition of the veneer glue. When powdered veneer glues such as Ultra-Cat PPR are past their shelf life, you'll notice that the powder is lumpy and sometimes crystalized.
With a cold press glue, the bond is set inside the vacuum bag when the air inside the pores of the veneer and the substrate is displaced by the adhesive. There really is no easy way to remove veneer that has been applied with common veneer adhesives. The problem with solid wood is that it will expand and contract with seasonal humidity changes in the house. If you are using a burl veneer that has some voids, it's best to use a veneer glue that matches the color of the wood cells around the voids which are frequently darker than the rest of the veneer.
If the substrate surface is porous, a PPR glue (such as Ultra-CAT™) is ideal because it cures rock-hard and it's moisture and heat resistant. If you have a vacuum press and the substrate material for your project is porous, then certainly a cold press veneer glue is ideal.
For those woodworkers who dont have a vacuum press, there are several options which can yield exceptional results. Veneer softener won't work and sometimes spritzing the top surface with water creates problems in and of itself. The rule of thumb is that the surface of the substrate should look evenly painted with veneer glue. If you can barely see the pencil mark on the substrate (through the adhesive), you have the right amount of glue. For standard cold press veneer glue, this term is not used because the veneer can be placed onto the panel immediately after the glue is applied. Despite the recommendations of many woodworkers, I have never found yellow glue to be suitable for veneering.
Some users have reported excellent results using TC-20™ copper adhesive for bonding backed veneers to some types of non-ferrous metals. If it smells moderately funky (but tolerable), the glue is probably close to the end of its shelf life.
Ultra-Cat veneer glue is urea resin glue which has a reactive affect when mixed with water. The nature of the veneer glue is to make an exceptionally strong bond thereby making it very difficult to remove a veneer intentionally.
When a solid wood substrate is needed, you'll find that quartersawn lumber is ideal since it has less seasonal movement than flat cut lumber.
Generally speaking, it is preferable to go with a darker tone if you have both light and dark colors in your veneer. True bleed-through that comes through a clear (non-void) part of a veneer is usually caused by using too much glue and in that case, it really doesnt matter which tone you use because any bleed-through of that nature will not look good.
If the material is non-porous (such as glass, plexiglass, plastic, or metal), you may find it difficult to bond veneer to your project. This type of glue never fully hardens, and thus allows the veneer to "creep" or move during seasonal changes in humidity. Wood veneer is just as prone to seasonal movement as regular lumber and the ability of veneer to expand and contract with seasonal humidity changes is greater than the strength of the contact cement bond. In some cases, you may be able to heavily sand the panel to remove the veneer and adhesive. Ultra-Cat can be used for wood to wood bonding and is especially useful for bent laminations because it dries rock-hard and minimizes spring back. And because of its thin consistency, yellow glue also has a tendency to bleed through and discolor the veneer. I have tried every contact cement I can find and nothing offers the permanent bond required by a raw wood veneer. So if you purchase veneer glue, keep in mind that it could go bad even if you never open the container. However, if the glue smells extremely offensive and has a thick, lumpy, or oily feel, then it is past its life and should be discarded.
Ultra-Cat veneer glue generally is the easiest to sand off because it doesn't gum up sand paper as much as other adhesives. Contact Adhesives Applying amp wood veneer doesn't perpetually want the apply of an expensive ane Gluing wood veneer with contact cement hold woodwind instrument cats-paw glue simply ofttimes regain that Gorilla glue does a ameliorate Results.
Either method will allow the moisture in the veneer glue to transfer the bonding polymers to the paper backing and will give you the quality bond you expect.
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