Page 82 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

8 Check flatness of longer side using try square or surface plate
9 File shorter side using bastard file
10 Check squareness with the help of try square.
11 Remove the sharp edge by using flat bastard second cut file.

12 Apply a thin layer a marking media on the job surface.
13 Draw marking lines as per drawing.

14 Punch / Witness marks as per drawing using dot punch and marking hammer.
15 Remove the extra material from the job using chisel/ hacksaw frame with blade.
16 File the job up to marking lines using flat second cut file.
17 Check all the dimensions as per drawing using vernier caliper / micro meter.
18 Insure all the dimensions with in tolerance using flat second cut file.

19 Maintain thickness as per drawing.
20 Finish the job with in tolerance using smooth file.
21 Remove all the burrs/sharp edge of the job using second cut file / emery paper / oil stone.
22 Use oil on finish job surface.

23 Pack job using oil paper.
Safety precautions
1 Hold the work piece rigidly in the holding device.
2 Use the file with Wooden / plastic handle.
3 Remove sharp edge / burrs of the job using flat file.

4 Don’t use the oil / grease on the file or job surface.
5 Handle carefully precision measuring instruments.
6 Don’t mix precision measuring instruments with cutting tools.
7 Use filing speed as per material of the job.

8 Select correct pitch of the blade as per raw material in hacksawing.
9 Check squareness properly.
10 Don’t touch filed surface.

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CITS : CG & M - Fitter - Exercise 23