Coat Hook Revision Notes. Aluminium was used to make the hook. Aluminium is available in a wide...
-
Upload
leo-mccormick -
Category
Documents
-
view
213 -
download
1
Transcript of Coat Hook Revision Notes. Aluminium was used to make the hook. Aluminium is available in a wide...
Coat Hook Revision Notes
Aluminium was used to make the hook.
Aluminium is available in a wide variety of forms
This material was chosen because it is lightweight, easy to work and will not rust.
Aluminium
Ingots
Sheet
Rod
Bar (rectangular and square)
Extrusion
Aluminium
In the school work shop we have the following types of aluminium
Aluminium is used for: Car bodies, cookware, food wrapping foil, insulation, aircraft, greenhouses,boats, engine cylinder heads and window frames.Note: Aluminium is rarely used as a pure metal. It is mainly alloyed with copper to improve strength, eg. Duralumin which used in the production of aircraft parts.
Aluminium saucepan.
Aluminium Uses
The back piece of the coat hook was made from Medium Density Fiberboard (MDF)
MDF is available in large sheets 2440 x 1220 mm and a wide range of thicknesses 3mm – 25mm
This material was chosen because it is easy to cut, file, sand and paint
Medium Density Fiberboard
A Coping Saw was used to cut the MDF back plate to shape
The teeth on a coping saw blade should point backwards. This will help prevent blade breakages.
Remember always report a broken blade immediately to your teacher
Coping Saw
An Engineers square was used to mark lines at right angles to an edge.
Engineers square
A Scriber is used to mark out on metal
Scriber
Odd Leg Callipers are used to draw a line parallel to an edge
Odd Leg Callipers
A Countersink bit was used to countersink the back of the coat hook prior to riveting.
The Countersink bit can be used in a hand drill or Cordless drill
Hand Drill
Countersink Bit
To obtain a smooth finish on the aluminium we used a technique called Draw filing
Draw Filing
Emery Cloth was used to clean up the edges of the coat hook prior to bending the coat hook into shape
Emery Cloth
“Wet and Dry” silicon carbide paper is best used wet. This stops the paper getting clogged up
Silicon Carbide paper was used to clean the coat hook prior to bending
The Centre punch is used to mark the position of holes prior to drilling
Centre Punch
A Machine Vice is the safest way to hold the metal while drilling.
These sharp metal shavings are called Swarf
Machine Vice
The Pillar Drill was used to drill 2 holes through the Coat Hook
When using this (or any other machine) it is important to read the safety notice on the wall to make sure you understand how to use the machine safely.
When using the Pillar Drill you must
Wear GogglesTie any long hair backTuck in any loose clothing
Pillar Drill
The Pillar Drill
On / Off Switch
Drill Chuck
Chuck Guard
Chuck Key
Machine Vice
Pillar Drill
Each workstation can be fitted with an Engineers Vice.
The vice is fitted with Vice Guards. They are used to protect the work piece from the serrated jaws of the vice
Engineers Vice
A Raw Hide Mallet was used to bend the coat hook into shape.
The mallet has a soft face that will not mark the aluminium bar
Raw Hide Mallet
A Ball Pein hammer was used to rivet the two parts of the model together
Ball Pein Hammer
The small aluminium pins used to attach the coat hook to the back piece are called Rivets
Rivets“Round” or “Snap” head rivets
A Rivet Set and Snap was used to rivet the two parts together
Rivet Set & Snap
Each work station is equipped 4 files
1 Rough cut Rectangular File
1 Smooth cut Rectangular file
1 Half Round File
1 Round File
One edge of the file has no teeth. This is called the Safe Edge
Remember never use a file without a handle
Files
When filing soft metals like aluminium the file may get clogged up. This is called Pinning. Use a File Card to keep the file clean
File Card
When using Acrylic paint remember to clean your brush in warm water as soon as you have finished painting
Acrylic Paint
We used Counter Sink Screws to fix the coat hook to the wall
Countersunk Woodscrews
Countersunk Woodscrews
The End