Skill-Development--Fitter/C2/Filing-a-workpiece/English

Title of script: Filing a work-piece

Author: Praveen S

Keywords:

Visual Cue	Narration
Slide Number 1 Title Slide	Hello and welcome to the Spoken Tutorial on Filing a Workpiece
Slide Number 2 Learning Objectives	In this tutorial, we will learn, What is filing? Various tools used for filing Different types of filing How to file a workpiece and Common mistakes while filing
Slide Number 3 Tools Requirement	For this tutorial we require A file The workpiece to be filed Bench Vice to hold the workpiece Vernier Calliper to measure Try Square to check the workpiece's squareness Hack saw to cut the workpiece Punch to mark on the workpiece Ball pein hammer
Slide Number 3 What is Filing?	Let's first see, what is filing. Filing is a method of removing excess material from a job / workpiece using a file.
Slide Number 4 Types of File	There are various types of files for various requirements : Flat file : for rectangular cross-section Smooth file : for getting smooth surfaces Safe edge file : for filing the right angled part of the workpiece Square file : for developing square corners & square holes Half run file : for filing semi-spherical surfaces Round file : for developing holes & round groves.
Animation – Measuring the workpiece	Let’s us now learn the filing process. My requirement is a 5 x 3 inch workpiece. The job or the work-piece which I have is 5 x 4 inch. So let us first cut the excess 1 inch part.
Animation – Applying the marking medium on the workpiece.	For this, apply the marking medium on the work-piece. You can use a chalk piece or ink as a marking medium.
Animation – Marking on the workpiece	Once the medium is applied, mark the work-piece using a jenny caliper, as shown. So, I am marking a little less than 1 inch according to my requirement.
Animation – Punching over the marked line	Next, use a punch and ball pein hammer to punch on the marked line.
Animation - Place the work-piece in Vice Jaws	After this, place the work-piece parallel to the jaws of the Vice. Now tighten it to hold the work-piece in place. This is so that we can cut the work-piece easily.
Animation – Cutting the excess part with Hacksaw	Next, take the hack saw and cut the excess portion of the work-piece.
Animation – Measuring the cutted workpiece	Once the excess part is removed, measure the work-piece once again. Yes, the measurement is proper now. I have roughly 5X3 inch. Now, let’s start filing.
Show all the files Circle the Smooth file.	First we have to select a suitable file. I need a smooth edge, so I will choose the Smooth file.
Point arrow to Handle	Make sure that the handle of the file is securely fitted.
Show a file without handle Show some hand injuries	Do not use a file without a proper handle. You will end up injuring your hands.
Show a clean file and a rusted file.	Make sure that the file is clean before you start filing.
Show a rusted file Show some hand injuries	Using rusted files will damage the work-piece as well as bruise your hands.
	So, now I have selected the proper file.
Animation - Show the standing position	Next step is to place the work-piece securely in the Bench vice once again.
Show the position of the person	Position yourself at 90 degree perpendicular to the Bench vice. Place your left leg in the front & right leg at the back. This is the best position for filing.
Animation - Show the hand position	Now hold the handle of the file firmly in your right hand. With your left hand, hold the tip of the file. Ensure that, the right thumb is pressing the handle of the file firmly. Now we are ready to start filing.
Slide 5 Methods of filing	There are three methods of filing. They are : Straight forward filing Draw filing Diagonal or cross filing. Let’s see them one by one.
Animation - Straight forward filing	Moving the file lengthwise across the surface of the work-piece is called Straight forward filing. In this method, the filing is done by moving the file up & down slowly. You can see that your work-piece is getting filed and the excess material is being removed.
Animation - Draw filing	In Draw filing method, the file is pulled towards the body with an even pressure.
Animation - Diagonal/cross filing	In Diagonal filing method, the file is moved diagonally over the surface of the work-piece. The movement of the file is from one corner of the work-piece to another, diagonally.
Text on screen “Flatness” “Squareness”	Once the filing is done, we have to check the flatness & squareness of the work-piece surface.
Show Try-Square & Vernier calliper.	This is done with the help of Try-Square & Vernier caliper.
Animation - Checking the flatness of the work-piece	To check whether the flatness is proper, place the Try-square on the work-piece as shown. Do so at 3 different places on the work-piece.
Animation of checking against a light source No light rays	Check this against a light source. This is a clear indication of flatness.
Animation of checking against a light source Some light rays emitting	If the surface is uneven, then you will see light rays between the work-piece and the Try-square. In such cases, you will need to file again.
	Next we will check the squareness of the work-piece by using the Try-square.
Animation of Try-square on corner of the work-piece	Keep the Try-square on the corner of the work-piece, as shown.
Animation of Try-square touching the sides of the work-piece	Now touch the edges of the Try-square on two adjacent sides of the work-piece, like this.
Previous frame continues	Check whether the adjacent sides of the work-piece are at 90 degrees to each other. If not, then file again.
Show the thickness edge of the work-piece. Show a Vernier calliper	Another measurement that we need to do is to check the thickness of the work-piece. For this, we have to use a Vernier caliper.
Animation of Vernier calliper measurement	Place the work-piece within the jaws of the Vernier caliper, as shown. Measure the thickness of the work-piece. Now repeat this at least on three different locations on the work-piece. Identical measurement indicates that the work-piece is even in thickness.
	Now its time to learn what not to do while filing.
Show the animation of filing at an angle	Do not file a work-piece at an angle
Show the animation of filing on both edges and skipping the central part	Do not file a work-piece at both the edges skipping the centre.
Slide Number 8 Summary	Let us summarise, In this tutorial, we have learnt Measure a workpiece Removing the excess part of the workpiece Filing the workpiece
Slide Number 9 About Spoken Tutorial Project	The video at the link shown summarizes the Spoken Tutorial project. Pls watch it.
Slide Number 10 About Spoken Tutorial workshops	The Spoken Tutorial Project Team conducts workshops and gives certificates to those who pass an online test. For more details, please write to us.
Slide Number 11 Acknowledgement	Spoken Tutorial Project is supported by the NMEICT, MHRD, Government of India. More information on this Mission is available at this link.
	The script for this tutorial is contributed Praveen and This is Nancy from IIT Bombay signing off. Thanks for joining us.

Contributors and Content Editors

PoojaMoolya, Pravin1389