Length of hacksaw blade is measured from Centre of one pin hole to the centre of other pin hole.
37) The length of hacksaw blade is measured from
Centre of one pin hole to the centre of other pin hole
Related Cutting Tools MCQ - Machinist(Set-1) with Answers
The space is not enough to run the blade
Protect the adjacent sides
Safe edge of a file tool is one which is not having any teeth's cut on it.
Cleaning the file teeth
During filing, sometimes the metal chips (filings) will clog between the teeth of files. This is known as ‘pinning’ of files.
Files which are pinned will produce scratches on the surface being filed, and also will not bite well. Pinning of the files is removed by using a file brush also called a file card, with either forward or backward stroke.
Required to avoid friction between the blade and workpiece
To prevent the hacksaw blade binding when penetrating into the material, and to allow free movement of the blade, the cut is to be broader than the thickness of the hacksaw blade. This is achieved by the setting of the hacksaw teeth. There are two types of hacksaw teeth settings.