Joining

Joining

1. Permament joints

   • Soft soldering
     • tin-lead alloy
       • heated with electrid
         • 400ºC temperature
   • Hard soldering
     • heated with a blowtorch
       • temperature of 800°C
   • Oxyacetylene welding
     • temperatures of over 3000°C
   • Rivets
     • metal tube with head
     • is placed in end
     • Press fit joint
       • slightly larger diameter
       • using hammer/pressure
       • Adhesives
         • waterproof, instant glues
         • scratch surface improve

2. Temporary joints

   • Nuts and bolts
     • pieces joined together
     • pieces don't break
     • secure the joint
   • Screws
     • joins pieces
     • self-drilling screw
   • Threaded stay bolts
     • grooves at both ends
       • middle smooth
   • Keyed joint
     • join 2 objects
       • putting key in groove
   • Splined shafts
     • fit together when joined
       • pieces can rotate
   • Sliding joints
     • two objects can joined
       • slide over