Physical Properties of Wood
Moisture content is critical when trying to bond pieces of wood togther, what is the optimal range of MC% for a glueup?
6%-14%
The useable life of an adhesive once it has been mixed
Pot life
Large molecules constructed of many small repeating units
Polymer
For an RF batch press you are using a 10kW generator. That means you can cure how many square inches per minute
1,000 sq. in.
Moisture, weathering, wear, and what other factor can damage unfinished wood?
Sunlight
the amount of time between applying the adhesive and joining the pieces
Open Assembly Time
An adhesive type that soften and flow upon heating, and harden agin upon cooling
Thermoplastic
The amount of time the the RF is off but the pressure is still on
Ring porous hardwoods require an extra step in the finishing process, what is it?
Seal coating
Thick cell walls & small lumens make adhesive penetration difficult limiting mechanical bonding to less than 2 cells. This is a symptom of what type of wood
High density species
The measure of a fluid's resistance to flow and deformation
Viscosity
Adhesives that undergo irreversible chemical changes when cured.
Thermosetting
Clamp carriers are operated using what type of power?
Pneumatic power
HVLP stands for?
High Volume Low Pressure
Trying to glue pieces of wood that are considered "green" is difficult because the glue migrates slower into wet cell walls and ultimately is prone to...
Squeeze out
A weak bond caused by insufficient adhesive remaining between wood surfaces
Starved glue joint
Chemicals used to accellerate the rate of chemical reaction
Catalysts
RF curing allows adhesives to cure almost instantly, what molecular principle allows the adhesive to dry so quickly?
Friction
Mil guage
Adhesives penetr4ation is so easy in the end grain that over-penetration occurs. Because of this we use this type of joint to bond end-to-end products
Finger joints
Time between joining the pieces and applying pressure
Closed assembly time
A liquid that has the ability to dissolve, suspend, or extract other materials without changing their chemical composition
Solvents
Extrusion nozzle
What is the finishing defect know for its' porous look and fruity name?
Orange peel