18-Adhesives and Fixings

Question 1

Name 5 Adhesives

Answer 1

• Polyvinyl Acetate (PVA)
• Contact Adhesive
• UV hardening Adhesive
• Solvent Cement
• Epoxy Resin

Question 2

Adhesives - Polyvinyl Acetate (PVA)

Answer 2

• Water based adhesive used to bind wood based materials
• Often used to provide extra stability to a wood joint
• Dries Transparent
• Not usually waterproof

Question 3

Adhesives - Contact Adhesive

Answer 3

• Used to bond large areas like sheet material
• Is often used to bond different materials together
• Both pieces are initially coated in the contact adhesive and left for 10 mins until it is ‘Tacky’
• They well then be bonded, adhesion is instant upon contact

Question 4

Adhesives - UV Hardening Adhesive

Answer 4

• Clear liquid that quickly cures when exposed to UV light
• Used on metal, glass , and polymers
• Excess adhesive can be wiped away before curing process is initiated so a clean joint is produced

Question 5

Adhesives - Solvent Cement

Answer 5

• Clear liquid used to join polymers
• Softens the surfaces of the polymers which allows them to fuse together
• Often used by plumbers to bond non-pressure pipes

Question 6

Adhesives - Epoxy Resin

Answer 6

• Used to adhere two different materials
• Comes in two parts, resin and hardener
• They will need to be mixed and applied to joining area
• Can take up to 24 hours to dry fully

Question 7

What is a Jig?

Answer 7

• A device that can control the motion of a tool relative to a particular workpiece
• It will hold the work and guide the tool removing the need to repeatedly mark out

Question 8

What is a Fixture?

Answer 8

• Something that holds work in a given position while a manufacturing process takes place
• For example a clamping frame used during welding

Question 9

What is the general role of Jigs and Fixtures

Answer 9

• Ensure that parts or components can be made repeatedly, efficiently, and accurately
• Used mainly in larger production scales