Plastic Injection Moulding Specialists. Est 1948.

Let us visualise your idea!

S.B.Weston’s design team can provide you with a technical drawing service using the latest CAD software.

Our designers will work with you to evolve and improve your product idea aesthetically and functionally creating 3D models and detailed drawings to visualise your idea on screen.

To ensure your product can be successfully transferred to a mould tool which moulds, ejects and generally performs correctly and consistently at the manufacturing stage, the following design considerations will be applied:

• consistent wall thicknesses throughout the design.
• thin walls to allow consistent cooling and reduce uneven material
• shrinkage.structures such as ribs utilised to strengthen walls.
• ribs – half the wall thickness to avoid sinking.
• corner and edge radii.
• draft angles added to sides (typically up to 2 deg) – especially textured /spark eroded walls and walls higher than 1.5cm.
• no undercuts that are impossible to remove from the mould unless absolutely necessary – undercut features nescessitate side core actions which significantly increase the complexity and cost of the mould.
• light colours and spark eroded finishes to hide flow patterns.
• keeping holes at least .0.75cm from edges.

Once these criteria are met we will look for a design approval from you, at which point the CAD files will be supplied to our toolmaking staff for prototyping or CAD/CAM tooling purposes.

Remember… Design will make or break a product… come to the professionals!