development on production method

Development: Production Method

Lesson objectives

• At the end of the lesson, students are able to:

1. Understand the different production methods and how to apply it in development

Steps in development in production method

• Show at least different methods of assembling the different parts

• Choose the method of assembly that best suits your product

• Examples of carcase joints:

16.10 Joining and Assembling Processes

carcasebutt joint

dowelled joint

Source: Design for Life Textbook by Peter Stensel

• Examples of carcase joints:


carcasefinger joint

housing joint


• Examples of frame joints:


framehalving joint

dowelled joint


• Examples of frame joints:


framemortise and tenon joint

mitre joint


• Nails are driven into

the wood in a

parallel manner.

• Dovetail nailing

provides a stronger

joint.


staggered

• Staggered nailing reduces the

risk of splitting the wood grain.


• Screws can be used for joining

different materials.

• Wood is joined using wood

screws; metals and plastics

are joined using machine

screws.

• Joints are strong but

temporarily because they can

be taken apart at a later date.

• Common types of wood screws

are the countersunk head

screw and round head screw.



• Materials can provide strong

joints using nuts and bolts.

• Common types of bolt heads

include hexagonal, square,

cup, countersunk and cheese

head.


• Nuts and bolts can be fastened using

a spanner.

• Common types of spanner include

adjustable, open-ended and ring.

• Choose a spanner that is a snug fit.


• Rivets are used to join metals and other sheet materials

permanently with strong joints.



• Thin sheet materials can be

joined quickly and permanently

using pop riveting.

• This type of joint is not strong.



• Wood is usually joined using

polyvinyl acetate (PVA) glue

or contact glue.



• A wide range of adhesives, solvents and cements are

available for joining similar or dissimilar materials.

• Adhesives can close gaps between joints.

• Metals are usually bonded using the following adhesives:



• Solvents such as chloroform and liquid poly permanently

join acrylic and polystyrene respectively.


• They dissolve the

surfaces that are in

contact and fuse

them together.

• Other solvents are

available for joining

other plastics.


• Knock-down fittings enable

materials to be joined and

taken apart without

weakening the joints.

• These are commonly found

in modern self-assembled

furniture.



16.11 Finishing Materials / Equipment

• Screws can be used for joining different materials.

• Wood is joined using wood screws; metals and plastics are

joined using machine screws.

• Joints are strong but temporarily because they can be

taken apart at a later date.

• Common types of wood screws are the countersunk head

screw and round head screw.
