Lesson Seven
Core learning objectives
Demonstrating their understanding of forge work and drawing down by using a range of tools such as the anvil, ceramic forge, hammer and hollow bit tongs in a safe manner in order to produce the blade section. With a demonstration of increasing accuracy they will forge a square drawn down end which will provide a force fit into the handle. They will be expected to check their work as they continue against their drawing and work schedule making sure that they make any notes regarding difficulties our observations.
Extended learning objectives
Demonstrating their understanding of forge work through the production of the screwdriver blade to match the intended blade design. They will consult their design drawing and work schedule making sure that any notes regarding difficulties or observations are added. If they have chosen a method of fixing which requires a forge process they will complete this, otherwise they will clean off the blade and begin the process of point hardening and tempering.
SEN learning objectives
With support if needed they will forge both ends of their blade. In discussion with the teacher they will consider any difficulties and explain these to the teacher who will support them in adding these comments to their work schedule. If SSA Is available they must not assist in this activity unless training has been given and certification gained. They can however assist in the recording of difficulties and observations.
Lesson context
Teacher demonstration of the tools, processes and procedures related to forging. Preparing handle material. Demonstration of centre lathe - facing off, centre drill, drill and centre bore hole.
Lesson structure
(Pre-lesson planning) Preparation of equipment. Risk assessment of activities in relation to the group and viewing of the activity. Personal protective equipment(PPE) for teacher and for pupils. Ensure that any SSA has the required information to support SEN pupils in the recording of their difficulties and observations. Setting up lathe for demonstration.
- Re-cap on what has been achieved to date. Refresh the groups memory regarding the previous demonstration on drawing down the blade and for a square taper. Ensure that extended pupils re-read the notes in their portfolios regarding point hardening and tempering. Test their knowledge and understanding before they proceed with this process..
- Re-enforcement of safety aspects, rules when working within the heat treatment area. The essential use of PPE.
- Test understanding through safety handout.(Reference italics)
- Working in forge area forge -drawing down the blade of the screwdriver and for a square taper.
- (A large group may need to be split in order to ensure that they can be safely managed. If this is the case the teacher may wish to consider the use of a colleague to supervise the main part of the class which can be involved in cutting their blades to length and receiving a demonstration on the lathe on a rotation basis. Alternatively the teacher may be able to use a technician who has been certificated in heat treatment and hot metal processes to supervise the hot metal work whilst they continue with the main group.)
- Demonstrate centre lathe process. Explain safety issues and PPE required. Demonstrate facing off.Outline the rules of area of activity - the teacher could organise a work rota for both areas to which pupils write and erase their names for when they are ready to complete and have completed a process. the W/B or B/B could be used for this purpose. this would ensure that only those working are in the danger area and no queues are allowed to form.
- Whilst waiting for access to lathe those pupils who have successfully forged their blades can, when the blades have cooled, begin filing the blade shape. Demonstrate to whole group method and shape required.
- General discussion and evaluation of the lesson. Difficulties discussed and notes taken should further demonstrations be needed. Pupils complete their lesson evaluation notes. Pupils clear away.
Equipment and materials
- Protected clothing (PPE)
- Forging tools and equipment
- Tool steel
- Aluminium for set handles. (Material for any specific designed handles)
- Files, hacksaws, goggles, spare aprons, hollow bit tongs, scribers, blue, rulers, emery cloth.
Homework
None
Risk Assessment
Hazard Identification |
Haz_x |
Risk_= |
RA |
Action |
Example Risk Assessment |
3 x |
1 = |
3 |
Satisfactory |
The heat treatment and hot metal area is clear of all obstructions. |
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The fire blanket, sand bucket and fire extinguisher have been checked and are within easy access if required. |
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Tools and equipment have been checked for fault or defects. |
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Safety rules are to be carefully taught and re-enforced throughout the lesson. |
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PPE has been checked and is in sufficient quantity. |
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Careful planning has taken place with regard to group sizes and supervision during the activity. |
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Staff teaching the activity are certificated in heat treatment and hot metal processes. |
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A risk assessment has been carried out with regard to any pupil with known behavioural tendencies as to their suitability to be involved in this activity. |
Lesson evaluation
To be completed at the end of each lesson by the teacher-assessment to inform future planning.
