1. Wood Glue & Preserving and Finishing Products
Ag Mech I
Standards 6:6-8

2. Gluing
Gluing is used solely in wood working and is a sticky liquid used to hold things together
It is used in the manufacture of plywood and particleboards and extensively in manufacturing fine furniture

3. Gluing
Glue is used in combination with nails, screws or bolts to provide extra strength
There are many kinds of glues
Resorcinol, urea, polyvinyl, epoxy, contact cement, casein and animal glues
The most common type is aliphatic resin glue often know as Yellow Carpenters Glue

4. Yellow Carpenters Glue
It comes in colors ranging from yellow to tan to brown depending on the brand
Forms a very tight durable bond between the wood
Comes in various grades according to moisture resistance

5. Making Glue Joints
Glue must be pressed tightly into the pores of the wood to form a string bond
Use a vise or wood clamp to tightly squeeze the wood together then leave in clamp until glue dries

6. Epoxy Epoxy is used in agriculture and mechanics
It provides a strong weatherproof bond to several different types of materials like
Wood
Plastic
Ceramic
Metal
Masonry
To name a few

7. Epoxy Epoxy is made by mixing two parts together
Parts are mixed together then applied to material you are fixing
Dry time varies depending on product
JB Weld is one of the most common epoxys

8. Glue Joint Aids Dowel Pins Ae used to strengthen glued joints
Holes are drilled in the wood dowel pins are drove in coated with glue to add strength to the joint

9. Doweling Jig Used to align dowel holes on the wood joints
Prevents dowel holes from misaligning

10. Biscuit Newer method to dowels
Slots are cut inside the side of the pieces of wood biscuits are coated in glue and placed in the slot then held together by a wood clamp

11. Biscuit Cutter
Machine has dial to select biscuit size and depth gauge to ensure proper cutting depth along with a tape on the front to make sure you are cutting at the correct marked spot

12. Finishing Materials of Wood
2 basic ways to preserve finish wood
Painting
Poly finish

13. Painting
Painting is adding a coat of paint to protect the wood from the environment to prevent damage or rot

14. Finishing Is a chemical layer the protects the surface of the wood
To prepare the wood you must sand it down to a smooth finish then remove the dust and debrie

15. Oil Finish
Applied to the wood and gives a semi clear finish that shows the woods natural beauty
Most common is linseed oil from flaxseed

16. Varnish Is a finish composed of a variety of different oils
Does not adhere to wood well so a sealer coat must be applied
Tends to turn dark and become soft after years of use

17. Polyurethane Is a clear, durable, water resistant finish
Requires no sealer
Seals the pores of the wood and is very durable
Ideal for wood floors

18. Lacquer Clear finish that requires its own special thinner
Seals wood and provides good protection
Have a banana like smell
Do not apply over other finishes, it softens them

19. Shellac One of the oldest clear finishes Used by Romans
Comes from the shellac beetle o SE Asia
Easy to apply and safe to use
Approved by the FDA as a food additive

20. Wood Stains
Used to change color of wood to many shades of black, brown, red, blonde and white
Allow grain of wood to show through
Used to make cheaper wood look more expensive