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Decision guide

Epoxy Overmolding vs Production Overmolding: Two Different Searches

Compared with epoxy overmolding on a board, production overmolding is a molded second shot on a plastic or metal substrate. The searches look alike. The processes do not.

Decision guide

What is epoxy overmolding vs production overmolding?

This page splits two searches. It does not replace the overmolding hub.

Compared with a molded second shot, epoxy overmolding usually means a cast epoxy coat or potting on a board or module. The search borrows the word overmold.

Production overmolding here is a thermoplastic or LSR second shot molded over a plastic or metal substrate. See the overmolding hub for bond, shutoff, and two-shot routing.

If you need a molded grip, seal, or soft touch on a production housing, quote the molded second shot. If you need a board coat, that is a different process conversation.

Route split

Epoxy vs production overmolding: what each search really means

Use the left column for electronics potting language. Use the right column for a molded second shot.

Epoxy overmolding as searched

  • Often a cast epoxy coat or potting on a board
  • Protects electronics more than it creates a grip
  • Not the same tool or press as a molded overmold

Production overmolding

  • A molded second shot on a plastic or metal substrate
  • Used for grips, seals, and soft-touch faces
  • Quoted from CAD with bond and shutoff notes

Callouts

Which RFQ to open: epoxy vs production overmolding

Pick the row that matches the job. Do not write epoxy on a molded-overmold RFQ unless the substrate is actually a board coat.

Job on the partQuote pathWhat to attach
Soft grip or seal on a housingProduction overmoldingSubstrate CAD, overmold CAD, and the bond faces
Plastic over a metal bodyProduction overmolding or insert moldingMetal CAD plus the plastic volume
Board or module coatEpoxy or potting conversationThe board envelope and keep-out, not a mold RFQ
Two plastics in one cycleTwo-shot or sequential overmoldBoth solids and which shot is first

RFQ

Five RFQ fields that prevent the epoxy vs overmolding mix-up

The word overmold on an electronics drawing is how a molded-second-shot quote starts on the wrong part.

  • Say molded second shot, or board coat, in the first sentence.

  • Name the substrate: molded plastic, metal body, or a board.

  • Name the second material family if you know it: TPE, LSR, or another grade.

  • Mark bond faces, shutoffs, and show faces on the CAD.

  • Upload both solids when the overmold is a separate body.

Continue exploring

Related comparisons and glossary links

Decision guides and deeper process pages.

Overmolding

Molded second shot on plastic or metal.

Overmolding

Insert molding

When the metal is buried hardware, not the body.

Insert molding

FAQ

Common questions

Is epoxy overmolding the same process as production overmolding?

No. Epoxy overmolding usually means a cast epoxy coat on a board. Production overmolding here is a molded second shot on a plastic or metal substrate.

Can I overmold a metal part?

Yes, when the metal is the body and the second shot is a grip or seal. When the metal is buried hardware, that is insert molding.

Should I write epoxy on a molded-overmold RFQ?

Only if you truly need a board coat. If you need a molded grip or seal, write the substrate and the second-shot family instead.

Is prototype overmolding a different tool class?

The search usually means samples before a production release. Those samples come from the overmold program after DFM. This page does not publish a separate tool class for that.

What should I upload if I only have the housing and a grip sketch?

Upload the housing solid and mark the grip zone. Reviewers can flag shutoff and bond faces before the second solid is finished.

Can I use the same tool for epoxy overmolding and production overmolding?

No. A cast board coat is not an injection mold. Production overmolding is quoted on a hardened steel tool with shutoff and bond faces. They are different tool conversations.

Does epoxy overmolding provide the same bond as a molded overmold?

Do not treat an epoxy bond note as proof for a molded second shot. Name the bond or install check you will run on the molded grip. Reviewers can flag the substrate and second-shot faces.

What should I upload if my part has both a board coat and a molded grip?

Upload two packages. Mark the board coat as potting or epoxy. Mark the molded grip as a second shot with both solids. Reviewers can route each job. Do not mix them on one overmold RFQ.

Next step

Say molded second shot or board coat on the RFQ

If the search term is still epoxy overmolding, upload the CAD anyway and write the job in one sentence. Reviewers can route a molded second shot to the overmold quote. Not sure if the part is an epoxy job or a molded overmold? Upload CAD and write the substrate type. Reviewers can route it to the right quote path.