Buyer does not draw the circuit
Mark thick islands. Tooling sizes the channels.
Cooling line layout
Cooling Line Layout: Part Thickness Drives the Circuit
Show thick sections on CAD. DFM review comments on mass that cooling must reach. NetProto does not guarantee cycle time on quote day.
Design guideline
The circuit follows the wall map you send
Cooling channels sit in the mold, but they follow your wall map. Thick islands cool slowly and drive warp on flat covers. Buyers do not specify the circuit. This page owns how part design helps steel reach those islands.
Cooling line layout follows your wall thickness map. Part design can reduce thick islands so channels reach steel efficiently. Thick section design and coring out own that mass. Warpage is the defect when cooling is uneven. DFM review needs section views.
This spoke owns the part-to-cooling link. The tooling team lays out the circuit. The design guide hub lists every topic.
Roles
Which page answers which cooling question
Stay here for how part mass drives cooling. Open a sibling for the island, the core, warp, or cycle.
| Page | Use it for |
|---|---|
| Cooling line layout (this page) | How part mass drives the circuit |
| Thick section design | The island that is hard to cool |
| Coring out | How to hollow that island |
| Uniform wall thickness | Even walls cool more evenly |
| Warpage | The defect from uneven cooling |
| Cycle time glossary | What cycle time is; thick islands set the clock |
| Wall thickness | The nominal wall the circuit follows |
| Boss design | A solid boss is a local heat island |
| Ribs | Ribs cool faster than a solid block |
| DFM review | CAD check before steel |
Checks
What DFM review looks for for cooling
Qualitative checks. No figure on this page is a NetProto specification.
No cycle promise
Cycle depends on the tool and the resin. It is not guaranteed on quote day.
Glass fill still follows mass
Filled grades change heat flow. The island still dominates.
Core first
A hollow section is easier to cool than a solid block.
Decision
A thick boss island versus a cored section
Wrong: leave a solid island and ask for a special cooling layout. Right: hollow the island, then let tooling place channels.
What goes wrong
- A solid island behind a flat cover
- A buyer-drawn cooling circuit on the RFQ
- A cycle time asked as a guarantee
What to try first
- Core the island and keep a nominal wall
- Show section views of thick regions
- Name the resin, including glass fill
RFQ
Mark these on CAD before uploading for DFM review
The quote can start from CAD alone. These notes make the DFM pass specific.
Section views through thick islands
Flat covers that cannot warp
Resin family, including glass fill
Whether coring is acceptable
Known warp on similar parts
Cosmetic faces opposite thick mass
Related
Related design guidelines
Stay on this spoke for its question. Open a sibling for the neighbor topic or the CAD check.
Warpage
The defect from uneven cooling.
WarpageDFM review
How NetProto reads mass maps on CAD.
DFM reviewFAQ
Cooling line layout FAQ
Can buyers specify cooling layout?
You mark thick islands and warp-critical faces. The tooling team lays out the circuit. This page does not publish a channel map.
Does glass fill change cooling?
Filled grades change how heat moves. The thick island still dominates. Name the grade.
Will NetProto guarantee cycle on quote day?
No. Cycle depends on the finished tool, the resin, and the process. DFM review comments on mass that will fight cooling.
How does part design help cooling?
Core thick islands and keep walls even. Then channels can reach steel.
Is this a mold-design catalog?
No. It is a part-design page. Cooling circuits stay with the tooling team.
How is this page different from thick-section or warp?
Thick-section owns the island. Warp owns the defect. This spoke owns how mass drives cooling. DFM review checks CAD.
What information should I mark on CAD for cooling review?
Show section views through thick islands, mark warp-critical flat faces, and note the resin family including glass fill. Upload CAD so DFM review can comment on mass before quoting.
Next step
Upload CAD so DFM can read the cooling mass map
Share thick islands and warp-critical faces so review can comment before quoting.