Material Order / Cutting list

progress

bog
finished underlay
back plate underlay
out of alignment cabinet

bogged cabinet

underlay progress

Carpet underlay
Top plate with carpet underlay inside
Putting in the carpet underlay
speaker cabinet without back plate


top which needs bogging

More Progress

bogged side plate
close up bog
cabinet front view
-
drilling plate sideon
marking side plate
front view
front view
drilling
drilling
bogging front plate
cabinent in a vice
bogged screws
marking side plate
speakers
front and top plates together
drilled holes
the workshop
ruler
side plate angle
back plate
back plate
top plate markings
top plate
top plate
all plates

a

front back and top put together
put together front view
finished top plates
input hole on back plate

1.3

We are making a pair of speakers that must be constructed out of a material that is recycled or being used for a purpose that it was not originally intended for. For this we are mostly using MDF which is a type of recycled wood and we are using carpet underlay which is usually intended to line the floor beneath carpets. However, we will use it to line the insides of our speakers to insulate it against the unwanted frequinceis that cancel out.

Envoronmental hazards that relate to these materials include the harmful gases produced by MDF when it is burnt or cut. This releases deadly chemicals that is in the carcenogenic glue of MDF and can cause damage to the atmosphere. Also, Carpet underlay is highly flammable and when ignited can cause physical harm and will also release large amounts of CO2 into the air.
To protect against these environmental and physical hazards we are required to wear a mask that will prevent inhalation of the carcenogenic gas. Also, we use large extraction fans and open windows to remove the fumes from the work area.

2.2

2.2 Recycling options are identified for the materials to meet the requirements of the design brief.My first recycled material is MDF. MDF is an engineeredwood product made by breaking down softwood into wood fibres, combining it with wax and a resin binder, and forming panels by applying high temperature and pressure. I am reprocessing it to form a speaker by following my engineering drawing. I mark the wood and cut out the parts I need from it to create a speaker.My other recycled material is carpet underlay. Carpet underlay is used in the speaker to absorb unwanted frequencies, to stop phase cancellation which makes the speakers sound tinny. I cut it into the shape of my front and back plates and it is stapled onto the inside.