1. Basic Hand Tools
When making working models in the Imagineering Clubs, you will be using a variety of Hand Tools.
For example making the Steady Hand Game involves using Screwdrivers, Pliers and Wire Strippers
Here is a quick guide to some common tools

2. Screwed Fixings
Screwed fixings are an essential means of attaching and securing components to each other and to external surfaces
They come in two main types:-
Tapered (sharp ended) self-bedding, and
Parallel (blunt ended) to fit with mating .pre-threaded holes

3. Screwed Fixings
Examples of the first type are wood screws, chipboard screws, self-tapping screws
Wood screws
Chipboard screws
Self-tapping screws

4. Screwed Fixings
Examples of the second type are nuts and bolts, studs and set screws
Nuts and bolts
Double ended studs
Set screws

5. Drive systems
There are many configurations used on the heads of threaded fasteners to mate with the appropriate tool in order to turn or ‘drive’ the fastener into position
The most important of these systems are shown on the next slide

6. Drive systems Slotted flat or straight Torq-set
Phillips ‘crosshead’ PH
Triple Square XZN
Pozidrive (SupaDriv) PZ
Tri-wing
Hexagon (external)
Square (external)
Hexagon socket (Allen)
Spline drive
Spanner head (snake eye)
One-way (clutch)
Polydrive
Torx T & TX

7. Drive systems
All of these drive systems are made in a range of sizes to cover different sizes of fasteners
The Pozidrive system is a development of the Phillips system and is the commonest for most screw types in construction and general use
Hexagon drives are still the most common for nuts, bolts and some set screws but Torx drives are now widespread in engineering

8. Screwdrivers
Screwdrivers are specified by the following characteristics:-
1. Drive system and size (eg, No. 2 Pozidrive, …5mm flat slot, No. 3 Phillips)
2. Shaft or blade length
3. Shaft or blade diameter or square section …(normally tied to drive size)
4. Grip or handle profile

9. Screwdrivers
Some screwdrivers have special features like pump action, reversible ratchet drive and multiple loose interchangeable drive bits
Ratchet and multi-bits
Pump action

10. Screwdrivers
Always use the correct drive type and size for the fastener to avoid damage and ‘cam-out’ where the drive twists out of the head
Phillips and Pozidrive are NOT interchangeable
When driving slotted head screws use a screwdriver whose blade is as near the width of the slot as possible and is a ‘snug’ fit in the slot

11. Screwdrivers
Phillips screw drives are made in sizes 0 to 5, inclusive, but No’s 1,2,3 &,possibly, 4 should cover the vast majority of work
Similarly, Pozidrive sizes are 0 to 4 but No’s 1,2 & 3 will be all that are needed in a normal tool kit
Hexagon drives are normally used with spanners, sockets and socket keys and will be covered in a separate future set of slides

12. Pliers
Pliers is a general name for a huge range of tools designed to do specific jobs
However, for a general home workshop tool kit three types should give a good basis
These are combination pliers, taper (or round) nose pliers and parallel pliers

13. Pliers
Taper (or round) nosed
Combination
Parallel

14. Wire Strippers
Wire strippers are specialist tools for removing the insulation covering from electrical wiring to expose the conductor
They come in a variety of designs often combined with a wire cutter, crimper, etc
Other tools can be used to strip insulation but they are generally not as quick, safe or effective

15. Wire Strippers
Three designs of stripping tools

16. updated 21.08.15 www.imagineering.org.uk
Tools - Summary
Screwdrivers – 3 common types are Slotted, Phillips & Pozidrive. Normal sizes 1,2 & 3
Pliers – many different designs but 3 most useful types are combination, taper (or round nose and parallel
Wire strippers – unless you are a professional electrician, get the simplest design for the job
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