I'm looking for places that will do low-quantity or one-off orders.

• Waterbury Plating — "The small lot plating department can respond to all size customer orders."
• Seminole Metal Finishing — "we specialize in short run production and small lot jobs" [black oxide, zinc, stainless passivation]
• reliableelectroplating.com — "single piece", "No job is too small"
• Hearn Plating Company — "Happily do small batches, very reasonable cost."
• yellowzincplating.com — "I plate in small batches"
• ableelectropolishing.com — minimum: 12 - 24 pieces

Places in Chicagoland:

• JacobHay
• reliablegalvanizing.com
• mwmidwestgalvanizing.com
• Dynaburr
• krellabs.com
• Don Johns
• more