Removing Old Veneer
by Sal Marino
Removing old veneer from a work piece can be a
nightmare or relatively easy undertaking. This all depends on what type
of glue was used to bond the veneer to the surface. The veneer on most
antique pieces was originally bonded with hide glue and although very
strong, it has little resistance to heat and water.
You can take advantage of this by using a household iron to help you
remove the veneer. The heat of the iron will soften the glue and the
steam from the iron will force moisture into the glue, thus breaking the
bond between veneer and surface. Make sure the iron is filled with water
so you can use the steam. Set the iron at it’s highest heat setting and
let it heat up. Next, using a wide spatula or putty knife, start at one
corner and try to slightly lift the veneer by placing the blade between
the veneer and surface then pushing in and prying up.
Once lifted, place the iron directly on top of the veneer and let it
slowly heat the surface. Move the iron in a circular motion while
periodically applying steam. The veneer will gradually start to lift as
the hide glue starts to soften. Work into to the center and finally off
to the other edge until all the veneer has been removed. You may run
into some stubborn spots, in these areas try applying water directly
between the veneer and the surface by squirting or injecting. After all
the old veneer has been removed, make sure to remove all remains of hide
glue left on the surface. You can use warm water and a good heavy scraper for this
operation. Let the surface dry well before sanding and preparing for
re-veneering or other operations.
If the piece has been built in the past 50 years, the veneer was most
likely bonded with either a yellow, white or some other type of
synthetic resin glue. While the initial bond of these adhesives are not
much stronger than the old hide glues, many of these glues are extremely
resistant to heat and moisture, therefore removing them with the same
method that is used for hide
glue will not work
effectively here.
The best way to approach removing veneer that has been bonded with a
modern adhesive is by trial and error. Sometimes you may get lucky and
the veneer will lift off without much work because the initial gluing
application was not performed properly due to lack of adhesive, uneven
application or inadequate clamping pressure.
Once again, start at one corner and try to slightly lift the veneer by
placing the blade between the veneer and surface then pushing in and
prying up. If it does not budge, you may have to use a chisel and
actually break away some of the veneer from the corner. In certain cases
like with the hide glue, soaking also helps. Sometimes a mixture of 50
percent vinegar and 50 percent water will help soften the adhesive
somewhat. If this does not work, try some type of solvent like lacquer thinner or
acetone.
The bottom line is that removing veneer can often be a hard, time
consuming job and sometimes it all boils down to patience and a lot of
good old fashioned elbow grease. |