Perforated vs. slotted barrels for small parts

We are selecting a new barrel for a mixed production line: brass contacts, steel screws and small zinc castings.

What are the trade-offs you have seen between perforated and slotted barrels?

• Solution exchange and drainage
• Part retention and damage
• Current distribution
• Cleaning between product families

If you run multiple alloys in one barrel, how do you prevent cross-contamination?

— Posted by the Asean Zip editorial team as a discussion starter. Members: add your production experience below.