Veneer Production Applications 302g Flashcards
Why would you choose an MDF core over particle board?
More load bearing capacity
Why would you choose a ply core?
High screw hold, good load bearing
How should you apply veneer on a ply core?
Crossband the veneer, either by placing it perpendicular to the ply grain, or doing two layers of veneer, one perpendicular to the core and the outer parallel
What type of adhesive requires you to texture your core before application?
Hide glue
The working properties of veneer
- Strength or fragility
- Flat or convoluted surface
- Hard or soft
- Brittle or supple
- Prone to splitting or split resistance
- Even grain or cross grain
- Flexible or rigid
When shouldn’t you use a humidity controlled room when working with veneer?
If the piece is going to be processed in an area that is not humidified as joints may open up, sheets can shrink and buckle, things make crack in the press
Which veneer figures are more brittle?
Rift and quartered
Very stable figure of veneer
Flat
Specialty figures of veneer that are fragile and often curled in uneven patterns?
Burl and crotch
Describe an open face
Side facing the pith, has knife checks from slicing, stains darker than the closed face
How can you check for inconsistencies in your veneer?
Using a light table
What is the main ingredient in veneer conditioner? (other than water)
Glycerine
How to improve cuts made on veneer?
Compress veneer between to pieces of scrap, the pressure creates a cleaner cut
Good practice for applying veneer conditioner?
Apply both sides, close in a warm press to cool overnight, ready to use in morning
Types of reconstituted veneer?
-Flat
-Rift
-Quilted
-Dyed
Describe reconstituted veneer
Sheets of veneer glued back together and resliced for a more consistent appearance
Two specialty machines for cutting veneer
Veneer beam saw and guillotine
Angle of knife on a guillotine?
20 degrees
Specialty tools for joining veneer
Stitcher and edge gluer
Book match
Slip match
Random match
Four way end match
Swing match
Diamond match
Reverse diamond match
Recommended press settings with PVA
1.5-2 kg per square cm
Practice to help prevent splitting in veneer
Taping along ends
What type of veneer is characterized by sheets that are brittle, rippled and fragile with no dominant grain direction?
Burl
Two common defects produced by slicing veneer
Knife checks and inconsistent thickness
Three ways veneer can be pressed onto flat cores
- Hot press
- Cold press
- Vacuum press
An adhesive that resembles a sheet of plastic
Dry mount adhesive
