Page 115 - CITS - Fitter Trade Pactical - Volume - 2

FITTER - CITS

2 Filling Square Form
When the stud is broken a lilttle above the surface form a square on the projecting portion to suit a standard
spanner. Then turn it anticlockwise using a spanner to remove it. (Fig 2)

Fig 2

3 Using square taper punch
Broken stud can also be removed by drilling a blind hole (hole diameter equals to half of stud diameter) and
driving a square taper punch into the hole as shown in Fig 3. Turn the punch using a suitable spanner in an anti
- clock- wise direction to unscrew the stud.

Fig 3

4 EZY - out method (Fig 4)

Ezy - out or a stud extactor is a hand tool, somewhat similar to the form of a taper reamer but has left hand spiral.
It is available in a set of 5 pieces. The recommended drill size is punched on each ezy - out .
After drilling the hole recommended ezy - out is set on it and turned in an anti - clockwise direction by a tap
wrench. As it is rotated it penetrates into the hole increasing its grip and in the process the broken stud gets
unscrewed. (Fig 4)

Fig 4

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CITS : CG & M - Fitter - Exercise 33