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A fixed line style string trimmer head. A fixed-line string trimmer has a trimmer head that takes pre-cut line inserts. There is no wound spool of line in the trimmer head; the user instead feeds the pre-cut line in to the appropriate slots, making the trimmer easier to feed line into and troubleshoot than a bump feed system. [citation needed]
Cutting heads include circular saw blades (chisel tooth or scratcher tooth), brush knives, grass blades, etc. Most brushcutters also allow other heads to be fitted, including bump feed and fixed line heads such as those used on line trimmers or modified saw blades such as a beaver blade which resembles a chainsaw. Deflectors are attached on the ...
Stihl was founded in 1926 by Andreas Stihl, an innovator in early chainsaw production. Stihl says it is the world's best-selling brand of chainsaws and the only chainsaw manufacturer to make its own saw chains and guide bars. [4] Andreas Stihl AG is a privately held company owned by the descendants of Andreas Stihl.
The spindle on brushcutter and line trimmer heads, so that the torque tends to tighten rather than loosen the connection; The hand-tightened nut holding the fan blade to the motor spindle in many designs of oscillating table fans and floor standing fans; In combination with right-hand threads in turnbuckles and clamping studs [3]
A CNC dividing head may be used in this manner on either manual or CNC machinery. Most CNC dividing heads are also able to function as a full CNC axis and may be wired into the control of a CNC machine. This enables the machine's main CNC controller to control the indexing head just like it would control the other axes of the machine.
The first one-man chainsaw was introduced in 1950, though it was relatively heavy. By 1959, the average weight was around 12 kg (today, chainsaws typically weigh between 4 and 5 kg, with heavy-duty models ranging from 7 to 9 kg), and it quickly gained attention. [16] McCulloch in North America started to produce chainsaws in 1948. The early ...