1. Jigs A Definition When manufacturing a product, a jig is a custom-made tool used to control the location and/or motion of another tool. Why do we use jigs? A jig's primary purpose is to provide repeatability – (making it possible to produce Identical items), when manufacturing products. Jigs improve Accuracy, quality of product, speed of production, cost of production, and safety when manufacturing (as the item is usually securely held)

2. Drilling Jigs Drilling Jigs The diagram below is of a simple drilling jig. This jig allows the user to drill holes onto a square section piece of wood. The jig may be made from mild steel. The holes are accurately marked out and drilled along the centre of the top surface. The wood is placed into the jig and clamped to the surface plate of the pillar drill. Once again the pillar drill bit is passed through the jig and into the wood. The holes will be accurately placed along a centre line. Drawing of a simple Drilling Jig Wooden part to be drilled is put in here

3. Welding Jigs Metal clamps hold the frame in place so it can be welded Metal supports allow the frames to be positioned in exactly the same place every time

4. Identical Completed frames after welding using a jig

5. Exam question and Answers See question 10 on the 2012 exam paper and the answer on the 2012 mark scheme! It’s a scanned in PDF document so I can’t copy it onto here! sorry