Crosscut saw into the wood. Many sawtooth patterns have four cutters; each cutter that cuts to the left of the blade is paired with another that cuts to the right of the blade. Adjacent to the cutters there is generally a raker. The void on either side of the raker is known as the gullet. A raker is what does the actual removal of the wood that is being cut. The raker follows the cutters, paring the bottom of the kerf like a chisel or plane. As the raker pares the bottom of the kerf, a strip of wood is lifted upward,
Fleam Dyke was to defend their core settlements in eastern Cambridgeshire, Norfolk and Suffolk against Romano-British counterattacks in the 5th century AD. Icknield Way may be unremarkable nowadays but it is of huge historical importance. It is certainly a pre-Roman path often claimed as the oldest in England and was later named one of the "Four Highways of medieval England" on which travellers had royal protection. To that extent, Fleam Dyke, Flendish Hundred and Fulbourn have their place in history. Fleam Dyke is one of 286 sites selected by Charles Rothschild in 1912 to 1915 as wildlife sites "worthy of preservation" in