Cover Image
close this bookWood Harvesting with Hand Tools - An Illustrated Training Manual (ILO, 1989, 128 p.)
View the document(introduction...)
View the documentINTRODUCTION
close this folderBASIC WORK AND MAINTENANCE TOOLS
View the documentHAND TOOLS FOR WOOD HARVESTING
View the documentFILES
View the documentGRINDSTONES AND WHETSTONES
View the documentSPLITTING HAMMER AND WEDGES
View the documentMAKING TOOL HANDLES
close this folderAXES
View the documentUSE AND TYPES OF AXES
View the documentMAINTAINING AN AXE
View the documentMAKING AN AXE HANDLE
View the documentSHAFTING AN AXE
close this folderBOW SAWS
View the documentUSE AND TYPES OF BOW SAWS
close this folderCROSS-CUT SAWS
View the documentTYPES OF CROSS-CUT SAWS
View the documentMAINTENANCE TOOLS FOR CROSS-CUT SAWS
View the documentFILING VICES, SELF-MADE
View the documentFILING VICES, COMMERCIALLY-MADE
View the documentMAINTAINING A PEG-TOOTH CROSS-CUT SAW
View the documentTYPES OF RAKER-TOOTH CROSS-CUT SAWS
View the documentMAINTAINING A RAKER-TOOTH CROSS-CUT SAW
View the documentMAJOR OVERHAUL OF CROSS-CUT SAWS
close this folderTHE WORKER
View the documentCLOTHING, PERSONAL PROTECTIVE EQUIPMENT, FIRST-AID EQUIPMENT
View the documentFOOD, NUTRITION AND REST
View the documentWORKING POSTURES AND MOVEMENTS
View the documentWORK PLANNING AND ORGANISATION
View the documentACCIDENT PREVENTION
close this folderTREE FELLING
View the documentPREPARATION FOR TREE FELLING
View the documentTREE FELLING WITH AXE AND BOW SAW
View the documentTREE FELLING WITH AXE AND CROSS-CUT SAW
View the documentPRECAUTIONS WHEN MAKING THE UNDERCUT AND THE BACK CUT
View the documentFELLING TREES LEANING INTO THE PLANNED FELLING DIRECTION
View the documentFELLING TREES LEANING TO THE SIDE
View the documentTREE FELLING IN DENSE TROPICAL FORESTS
View the documentFELLING OF TREES WITH PLANK BUTTRESSES
View the documentWOOD WASTAGE DUE TO POOR WORKING TECHNIQUES IN FELLING
close this folderRELEASING LODGED TREES
View the documentRELEASING LODGED TREES WITH SIMPLE TOOLS
View the documentRELEASING LODGED TREES WITH SPECIAL EQUIPMENT AND MACHINES
close this folderDEBRANCHING AND DEBARKING
View the documentDEBRANCHING
View the documentDEBARKING
close this folderCROSS-CUTTING
View the documentGENERAL RULES FOR CROSS-CUTTING
View the documentTOOLS FOR CROSS-CUTTING
View the documentSUPPORTS AND TRESTLES
View the documentCROSS-CUTTING OF TREES UNDER TENSION
View the documentWOOD WASTAGE IN CROSS-CUTTING
View the documentCUTTING WINDFALLS
View the documentWOOD SPLITTING
close this folderWOOD HANDLING AND TRANSPORT
View the documentHANDLING BILLETS AND LOGS
View the documentMANUAL TRANSPORT OF SMALLER-SIZED WOOD
View the documentUSE OF SKIDDING SULKIES
View the documentSLIDING WOOD DOWNHILL
View the documentSTACKING AND STORING OF WOOD
View the documentPIT-SAWING
View the documentTRAINING IN WOOD HARVESTING
View the documentOTHER ILO PUBLICATIONS
View the documentBACK COVER

TYPES OF CROSS-CUT SAWS

If cross-cut saws are used, a comprehensive tool outfit is required. The saw must be well maintained in order to make the job easy and efficient. Properly maintained saws require less energy in use and increase production.

The saw should be made of high-quality steel. For large trees, a straight-back type of saw is preferable (1a) and for small to medium trees a hollow-back type. The cutting edge should be thicker than the back in order to reduce friction and the risk of "binding". The length of the saw should be 100 cm plus the diameter of the tree. The saw should be fitted with detachable handles (1b) which can easily be screwed on and off. A protective cover (1c) is needed to guard the cutting edge during transport.

Peg-tooth type saws are common because they are easy to maintain (2a).

Raker-tooth type saws are preferred by professional workers. They cut faster but require more skill in maintenance (2b).

Saw teeth must do three things:

- cut through the fibres;
- break loose the cut fibres;
- remove the loose fibres (sawdust) from the kerf.

In peg-tooth saws, these three things are done by one tooth. In raker-tooth saws the first of the three actions is done by a group of cutters cutting on alternate sides of the kerf. The second and third actions are done by the raker following the group of cutters.


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