Engineering revison
Try Square
A try square is a woodworking or a metalworking tool use for marking and measuring a piece of wood. To 90 degrees and making it straight as possible
Filing
click to edit
Filing Techniques
Draw filing
Cross filing
Advantages
Adaptable technique, useful for smoothing, finishing, sharpening and deburring
Can be used with any type of file
Can be used on small components
Disadavntages
Difficult to master and can result in an undesirable sloped surface on thicker workpiece
Advantages
Very effective at creating a smooth surface
Disadvantages
Only works with single cut files and
Cannot be used in tight spaces
Also called straightforward filing, this technique involves pushing the file across the edge of the material. It can be used for finishing, shaping or sharpening.
This technique is a little more unusual and involves holding a file at each end and using it in a similar way to sandpaper.
Hacksaw
Chuck Key
Non Ferrous
A hacksaw is a fine-toothed saw, originally and mainly made for cutting metal.
Most hacksaws are hand saws with a C-shaped frame that holds a blade under tension
Such hacksaws have a handle, usually a pistol grip, with pins for attaching a narrow disposable blade. The frames may also be adjustable to accommodate blades of different sizes.
To attach to vice side of table
Ferrous Metals
Contain iron are affected by magnetism but iron on its own is not suitable for engineering. They rust
Examples
Demolition site scrap metal
Metal off cuts from manufacturing industries
They don't contain iron and they are not affected by magnetism. They don't rust
Examples
Aluminium
Copper
Brass
Lead
Metal scraps of vehicle
Whats an alloy?
a metal made by combining two or more metallic elements, especially to give greater strength or resistance to corrosion. (Brass, Bronze and Cast.)
Liquid tensile strength
Tensile Strength of Liquids. Tensile strength and liquids do not seem to combine easily. They do however. Liquids can exist in meta-stable states if there is an energy barrier to the formation of droplets.
Hardwood's- Softwood's
lder, balsa, beech, hickory, mahogany, maple, oak, teak, and walnut
Cedar, douglas fir, juniper, pine, redwood, spruce, and yew