Search results
Results from the WOW.Com Content Network
Typically, a landscaping rake boasts a head measuring 30 to 38 inches or even broader, featuring steel tines set at a 90-degree angle to the handle. A stone rake is similar to a landscape rake, but with a narrower head of about 18 to 28 inches and is constructed from steel or aluminum. The head sits at a 90-degree angle to the handle.
In machining, the rake angle is a parameter used in various cutting processes, describing the angle of the cutting face relative to the workpiece. There are three types of rake angles: positive, zero or neutral, and negative. Positive rake: A tool has a positive rake when the face of the cutting tool slopes away from the cutting edge at inner side.
Quantity take-offs (QTO) are a detailed measurement of materials and labor needed to complete a construction project. They are developed by an estimator during the pre-construction phase. This process includes breaking the project down into smaller and more manageable units that are easier to measure or estimate.
Rake describes the angle made by a sloped surface with respect to a horizontal or vertical reference. The usages of this term include: A motorcycle or bicycle fork rake, the angle at which the forks are angled down towards the ground; Rake angle in machining and sawing, the angle of a cutting head
Cutting speed may be defined as the rate at the workpiece surface, irrespective of the machining operation used. A cutting speed for mild steel of 100 ft/min is the same whether it is the speed of the cutter passing over the workpiece, such as in a turning operation, or the speed of the cutter moving past a workpiece, such as in a milling operation.
A fire rake is a wildland fire fighting tool. A fire rake has a wooden or fiberglass handle with a rake head consisting of four to six sharp, serrated, triangular steel blades. It is used to rake a fire break with the sharp teeth, enabling it to reach fire in undergrowth in addition to loose surface debris.
A tool similar to a router, but designed to hold smaller cutting bits—thereby making it easier to handle for small jobs—is a laminate trimmer. A related tool, called a spindle moulder (UK) or shaper (North America), is used to hold larger cutter heads and can be used for deeper or larger-diameter cuts. Another related machine is the pin ...
By 1970, a calculator could be made using just a few chips of low power consumption, allowing portable models powered from rechargeable batteries. The first handheld calculator was a 1967 prototype called Cal Tech, whose development was led by Jack Kilby at Texas Instruments in a research project to produce a portable calculator. It could add ...