Coat Hook Project
About the unit
Students learn how to use a range of hand tools including tap and dies, brazing and heat treatments safely, via a coat hook project. The purpose of the project is to introduce to students a range of equipment essential in most projects in a safe and enjoyable environment. Students start to develop designing skills in this project. They extend their making skills by developing techniques by drawing and interpreting drawings (3rd angle orthographic and isometric drawings), marking out, cutting, shaping, tap and dies, brazing and finishes on metal. They will be able to select tools independently and use equipment to measure and cut accurately. Through these activities they gain an understanding of the working characteristics of the materials (ply) and how they can be combined to create more useful properties. They may consider both functional and decorative attributes in a finished product.
Section 1: Investigative, disassembly and evaluative activities (IDEAs)
to recognise and utilise drawing conventions in third angle orthographic and isometric
to understand how t use marking out tools and equipment specifically for metal.
to understand that drawings can inform design.
To understand and work to given tolerances.
Section 2: Focused practical tasks (FPTs)
to measure and mark out accurately
to use tools for cutting, drilling and brazing safely and effectively.
to use a chemical based finish and ‘hot dip’ polymer to a reasonable standard
Section 3: Design and make assignment (DMA) Design and make a metal coat hook, using marking out equipment, saws, pillar drill and brazing equipment for a particular purpose.
to consider the characteristics and properties of metals (both ferrous and non-ferrous)
to test tolerance by comparing a finished project with drawn object
to cut and join with accuracy to ensure a good-quality finish to the product
to test for accuracy and make adjustments where necessary
how to evaluate it personally and seek evaluation from others
Expectations
Most children will: have used their knowledge of marking out processes to manufacture a metal coat hook; have produced sketches and step-by-step plans and identified tools and materials; have measured, marked out and cut accurately, evaluating their work as it develops and at the end
Some children will not have made so much progress and will: have generated one viable idea after discussion with the teacher; have assembled a metal coat hook as part of the design; have used tools with some accuracy and finished their toy in a design that they have prepared with some assistance
Some children will have progressed further and will: through discussion, have sketched ideas using their knowledge of tools an equipment; have tested these ideas through prototypes before developing a set of plans to work from; have made a model which is accurate, functions well and is well finished and appropriate for the user; have compared their model to the original plan when evaluating and suggested ways to improve the finished product; have considered other ideas for metal based coat hooks
Language for learning
In this unit, children will use words and phrases relating to:
· designing eg sequence, annotated diagram, sketch, decision, choice, prototype, model, communicate
· making eg shape, assemble, accurate, saw, mark out
· knowledge and understanding
Numeracy
In this unit students are expected to work to tolerances of +-/1mm, and take measurements from engineering drawings
ICT
The unit expects students to complete research on design solutions using the internet. Students may wish to experiment & produce their designs using ICT & also have the option of presenting their research using ICT.
Citizenship
Students are encouraged to revaluate materials used in design, and there environmental impact, with extension work on sustainable solutions.
Materials and ordering info (per class)
Descriptor / Qty / SizesMild Steel bar / 50mm x 4mm
Mild steel rod / 6mm
Selection of Jigs
Rulers & measuring equipment, glue, making tape
tools and equipment - hacksaws, centre punch, odd leg calipers, round file, scriber, engineering blue, brazing rods
Health and Safety
Descriptor / Risk / HazardMarking out tools / 1 / Low
Pillar drill / 2 / Low
Hacksaws and files / 1 / Low
Tap and Dies / 1 / Low
Brazing Hearth / 2 / Low
Hot dip / 1 / Low
Plan of study
Research
Students can use primary and secondary sources to research inspiration
for the unique vinyl sticker designs.
Design - Initial ideas
Students sketch 4 different designs for their personalized stickers.
- Developed ideas
After analysis and feedback students can develop their initial designs and
develop into a final using CAD.
Make
Skills in metal work including hand tools and machinery can be developed
throughout the making stage.
Evaluation
Students should be encouraged to get feedback for the finished product
and evaluate the outcome.
Quick focused task
For low ability classes you can focus one or more lessons on using the
correct equipment to prepare a metal for drilling.
Students can practice measuring the width of the metal to find the
centre.
Metal can be placed in a vice if needed.
Create punch mark using centre punch- Explain why we do this
Continue to setting up the pillar drill to create hole.
Specification
It must fit the width of a standard home door.
It must be of an appropriate material.
It must have a hole at the top to fit a screw.
It must be functional.
It must be safe to use.
It should appeal to its target market.
It should be aesthetically pleasing.
Some practical advice for Teachers
1.Pre cut steel strips 25mm x 200mm Place strips of metal into a vice round the edges using the metal file.
Use glass paper around a block to ensure edges are smooth.
2. Metal must be measured and marked using a centre punch to find the centre point for drilling.
Emphasise the point of using a centre punch to stop the drill wandering.
3. Drill the hole using pillar drill.
4. Students will have to measure the width of the door for correct fitting of the product. Allow 2mm either side for a good fit.
5. If you do not want to make a jig for the bending you can use a vice and scrap pieces of wood. Hammer the metal
into a 90º angle, using the wood to protect the metal from marking.
6. Using the vice again to create the curve of the hook, this time bending and shaping the metal into a rounded curve. This could also be done using a forge to heat the metal.
7. If appropriate vinyl graphics can be applied when the end product is finished.