List two properties that made cast iron a suitable material for the Bailey Wood Plane.

Explain why the Bailey Wood Plane is an example of an innovation.

Explain how the Bailey Wood Plane demonstrates omnipresence and dominant design.

Explain why perspective drawings, orthographic drawings and exploded isometric drawings would be used in the design of the Bailey Wood Plane.

hardness;

high density;

toughness;

Award [1] for listing each property that made cast iron a suitable material for the Bailey Wood Plane up to [2 max].

innovation is putting an invention in the marketplace and making it a success;

the wood plane offers adjustability;

increasing the popularity/demand for the product/diffusion into the marketplace;

Award [1] for each of three distinct points in an explanation of how the Bailey Wood Plane is an example of an innovation up to [3 max].

Omnipresence:

the wood plane was invented in 1858;

meaning it has existed/been in circulation for a long time;

and continues to be used today (without change to the original design);

Dominant design:

dominant design contains features of a product that are recognized as essential (by a majority of manufacturers and purchasers);

the wood plane contains a lever cap/adjuster/flat base/blade/handles;

which are essential for the user to successfully plane wood/fulfil its function;

Award [1] for each of three distinct points in an explanation of how the Bailey Wood Plane demonstrates omnipresence up to [3 max].

Award [1] for each of three distinct points in an explanation of how the Bailey Wood Plane demonstrates dominant design up to [3 max].

Mark as [3] + [3].

Perspective drawings:

provide a (realistic) 3D representation of the product;

using foreshortening/converging lines/vanishing points;

which can be used to communicate to clients/for marketing/promotional purposes;

Orthographic projection:

show the product from multiple 2D views (top/front/side);

and provide dimensions/scale;

which are helpful to communicate between designers/manufacturers;

Exploded isometric drawings:

a 3D drawing technique that illustrates the component parts separated (drawn on a 30º angle);

used to show all the parts of the Bailey Wood plane (how they assemble/fit together);

which helps the user with repair/assembly/maintenance of the product;

Award [1] for each of three distinct points in an explanation of why perspective drawings would be used in the design of the Bailey Wood Plane up to [3 max].

Award [1] for each of three distinct points in an explanation of why orthographic drawings would be used in the design of the Bailey Wood Plane up to [3 max].

Award [1] for each of three distinct points in an explanation of why exploded isometric drawings would be used in the design of the Bailey Wood Plane up to [3 max].

Mark as [3] + [3] + [3].

An accessible question. Hardness/toughness were common responses, but often not both were provided.

An accessible question not well answered. A few candidates got the first mark for the definition but were unable to reason why the plane was a success and the result of its success.

A reasonable understanding of dominant designs but some confused omnipresence with ubiquitous.

Generally the best answered of the three 9 mark questions. Most candidates achieved the highest marks in the exploded isometric cluster (2-3 marks) but only 1 or 2 marks in the perspective and orthographic clusters.