Marking & Joining

1 Scriber

1.1 Sharp tool to mark accurate lines

2 Divider

2.1 Mark out circles or arcs.

2.2 One point digs in the material, whilst the other makes a line in the material.

3 Odd-leg calipers

3.1 Scribe line parallel to a staight edge.

3.2 The notched leg slide along material edge while the scriber point makes a line.

4 Surface gauge

4.1 Mark accurate parallel lines.

5 Dot punch

5.1 Marks positions of drill holes and make small dotted dents on already marked out lines.

5.2 Has a conical point ground to 60 degrees

6 Centre punch

6.1 Has a conical tip ground to 90 degrees.

6.2 Marks the centre of holes for drilling.

6.3 The punch is put into the dot punch mark and enlarges it.

7 Welding

7.1 Heat melts the edges of the metals being joined and forms a pool of molten metal. Then leave to cool.

8 Soldering

8.1 Bonds an alloy to form a joint.

8.1.1 'Parent metals' dont melt. The surface is cleaned with flux and heat is applied using a gas torch.

8.1.1.1 The solder is applied, which melts and 'runs' between the metals.

Resource summary

	Created by melissaivana13 almost 5 years ago