PPR fittings with voids or shrinkage: where to start
For fittings, inspect section thickness, gate position, hold conditions and cooling before judging a material route. Internal voids and surface shrinkage may not share the same cause.
Extrusion & fitting note
For fittings, inspect section thickness, gate position, hold conditions and cooling before judging a material route. Internal voids and surface shrinkage may not share the same cause.
A cut-section comparison and consistent moulding record give a much clearer basis for the next trial.
