Types Of Saw And Their Uses
When materials need to be cut on a DIY project the obvious tool for the job is a saw
. The most suitable saw for the job in hand can vary depending on some or all of the following key factors:
"Type of material to be cut
"Dimensions of the material to be cut
"Accuracy and quality of the finish required
"Availability of suitable blade types
"Health and safety considerations
Most saws are able to cut various materials like wood, metal, plastic or composite boards given the wide and varied range of blades often available for each type of saw.
One of the most versatile saws around is a Jigsaw, for which there is a massive choice of blades that allow it to cut anything from wood, metal and plastics to ceramics and acrylic glass. Jigsaws are also very portable and can be used in most locations, but are perhaps not ideal where precision and accuracy is required, particularly with large sheet materials.
A Reciprocating Saw is the best tool for removing existing installations where a task includes reworking or refitting - for example, replacing windows, or removal of fixtures and fittings from a building prior to refurbishment. With blades available to cut wood, metal, plastics and even brick, porous concrete and fibreglass, a reciprocating saw is ideal where rapid results and the ability to cut various materials takes priority over accuracy.
If you often need to make long straight cuts in sheet material, a Circular Saw should be your tool of choice. Circular Saws are relatively light and portable and can give reasonably accurate results when cutting sheets of plywood, chipboard and other composite materials. If a good quality finish is required, excellent results can often be achieved with this type of saw - assuming the correct choice of tooth geometry for the blade is made.
A Mitre Saw is the tool most commonly used for the accurate cutting of lengths of timber framing for structures where complex mitre joints (where two pieces of wood with angled edges are joined together to make a corner) are required. With additional features like slide, tilt and bevel, some mitre saws are able to cut timber for the most complicated mitre joints that are required in jobs like roof construction. Mitre saws which feature a slide function offer the option of cross cutting small panels. The maximum cross cutting width depends on the particular saw but typically between 200mm "" 300mm and up to 320mm wide in the case of the Metabo KGS 315PLUS.
If a tradesman needs to cut sheet materials with a reasonable degree of accuracy on site, a portable Table Saw may provide the solution. While less versatile than a circular saw, Table Saws are more stable and with the use of the correct blade and guides can often deliver results close to workshop standard.
Flipover Saws are a cross between a mitre saw and a portable table saw with the capability of carrying out many of the same tasks. A Flipover Saw is extremely versatile and delivers good results but often without quite matching up to the performance of a good quality mitre saw or table saw.
Site Saws are basically a basic less refined form of table saw built specifically to withstand the rigours of a site situation. Site Saws are ideal for rough cutting of sheet material like plywood and chipboard where speed rather than accuracy is the priority.
In recent years the introduction of the Fein Multimaster and Bosch Multicutter has added another option to the choice of saws a tradesman should consider having in his kit. For small, delicate cutting and trimming operations with blades suitable for many types of material, these tools are fast becoming a must-have for every tradesman.
Health and Safety is always important whenever a saw is being used. While most saws will cut a variety of materials sometimes with no danger, sometimes special measures need to be taken. This is particularly true when working with metal, which often needs to be clamped firmly prior to cutting. Always wear safety glasses and a protective mask when using a saw, and wherever possible use dust extraction.
by: Kelvin Power Tools
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