So, it looks like even if ABS is a recyclable product, it should not be recycled in filament products, as it seems to be difficult to extrude. I guess (hope) it is OK for injection process...
Yes. He was talking about injection moulding which was his field. He has no experience of 3D printing or filament.
I wonder if it is possible to specify virgin ABS filament ? Filament made from ABS pellets straight off the plant with no recycled material mixed in. Formulated specifically for 3D printers. Maybe at a premium.
It must have something to do with the quality of the filament you’re using. Why don’t you try 3d2print.net filament supplies? I’ve been using their filaments for 11 months now and I haven’t experienced any issue like yours.