What type of material is suitable if the desired outcome is similar to injection moulding but requires manual manipulation?

The suitable material for achieving a desired outcome similar to injection moulding while allowing for manual manipulation is Polymorph. This thermoplastic material can be heated and molded by hand, providing the flexibility to create intricate shapes and prototypes similar to those produced through injection moulding. Once heated, Polymorph becomes malleable and can be easily shaped, making it ideal for projects that require hands-on manipulation rather than automated production.

The other options do not have the same properties. Flexible MDF, while useful in certain applications, doesn’t offer the same malleability when heated as Polymorph does and is generally more rigid. Liquid crystal displays are electronic components, not materials intended for manual shaping or molding. Wood, while versatile, lacks the easy reshaping quality provided by Polymorph, as it requires tools for cutting and shaping rather than simple hand manipulation. Thus, Polymorph stands out as the most suitable choice for manual manipulation with properties akin to injection moulding.