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Adhesive
Tips and Tricks
When working with
adhesives, there are ten distinct standard practices
which will help ensure you get the proper joint. These techniques are
especially important for working with porous materials, such as wood.
Techniques
For
Using Adhesives
1. Thoroughly
prepare all surfaces to be adhered, ensuring that they
are clean and dry.
2. A temperature
of 70 degrees F or higher is generally recommended as
drying and curing times can usually be reduced by increasing the
temperature.
3. Use adhesives
in well ventilated areas only. The solvents and
catalysts used with most adhesives are toxic and can be harmful to your
lungs, eyes, and skin.
4. Softwoods
typically require longer clamping times than hardwoods.
5. Imported
tropical woods are usually more difficult to glue than
domestic hardwoods.
6. Any wood will
have a highly absorbent end grain, resulting in a weak
joint. Apply a thin coat of adhesive to the end grain before gluing to
prevent this. Then, apply a second coat of adhesive to the parts to be
glued as normal.
7. Parts glued
using contact cement can be precisely aligned
using a thin sheet of paper. After the contact cement has been applied
and is no longer tacky, place the paper between the two work pieces.
Fit the work pieces together and then slide the paper out for the final
bond.
8. Never adhere
green wood. Adhesives that cure by reacting with water
may be used if the wood is damp.
9. To increase
the joint strength, clamp the joint together whenever
possible.
10. Applying
excessive adhesive can actually weaken a joint in some
cases. Be careful and wipe away excess glue if necessary.
Conclusion
Always follow the
directions for the specific product you are using. If
the manufacturer recommends procedures which differ from the standard
practices above, accept the instructions for the product as the correct
ones.
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