"fnelias" schrieb im Newsbeitrag = news:bnuj0i$p7j$ email@example.com...
Find some general info concerning lost-core or fusible-core technology = here:
Yes, when the "correct" alloy is used to allow melt-out at temperatures "safely below" the melting or softening points of those plastics.
Mostly tin-bismuth alloys and the like.
Melt-out in an oil bath or by induction! This will not damage the part, = otherwise this technology hadn't been used for many years ... =20
Yes, as long as part design allows melt-out after molding. In other = words you do need some openings in the part to allow the support of the alloy core in = the tool and=20 the removal of the alloy core after injection molding.
Yes. It has been used very successfully for automotive air intake = manifolds, for example, for many years.
Perhaps. Depends on the precise design.
A good alternative to lost-core technology might be multi-shell = technology: