(5a) (i) Site constraints and safety considerations, such as unforeseen site conditions requiring design modifications. (ii) Changes in client requirements or additional features requested during the project. (5bi) (i) Brushing (ii) Spraying (iii) Dipping (5bii) To create a small indentation that guides the drill bit and prevents it from slipping. (5c) (i) The maximum length of the workpiece the lathe can handle (between centers). (ii) The largest diameter of the workpiece that can be rotated over the bed (swing). (iii) The size and capacity of the lathe’s motor and components to handle the required machining tasks.