Deeper grain, more draft
Qualitatively true. Use the supplier plaque, not a number from this page.
Texture draft
Texture Draft Requirements: Grain Consumes Draft Budget
Send the plaque or SPI callout with CAD. DFM review comments before texture is ordered. This page does not publish a draft-per-grade table.
Design guideline
Grain needs more draft than a polish
Texture depth uses draft. A smooth wall default is not enough on a grain face. Shutoffs across texture scuff on eject. This page owns the extra draft, not which plaque to pick.
Texture draft consumes your draft budget. Texture suppliers publish guidance per plaque. Use it before you freeze CAD. Draft angle owns the smooth-wall rule. Texture selection owns which grain. SPI surface finish owns the polish scale. DFM review needs the plaque and the face.
This spoke owns extra draft on grain. Mixing polished and textured regions on one part needs a clear parting plan. The design guide hub lists every topic.
Roles
Which page answers which texture-draft question
Stay here for extra draft on grain. Open a sibling for the plaque, polish, eject, or the general draft rule.
| Page | Use it for |
|---|---|
| Texture draft (this page) | Extra draft on a grain face |
| Draft angle | The smooth-wall rule |
| Texture selection | Which grain to pick |
| SPI surface finish | Polish scale A1 to D3 |
| Parting line | Shutoff across a textured face |
| Ejection design | Grain that scuffs on eject |
| Lettering and engraving | Art sitting on grain |
| Wall thickness | Texture does not replace wall rules |
| DFM review | CAD and plaque check |
Checks
What DFM review looks for on texture draft
Qualitative checks. No figure on this page is a NetProto specification.
Add texture before T1 when you can
A late etch is steel and draft work.
SPI is not MoldTech
Different systems. Name the plaque you want.
Shutoff across grain
Texture that walks over a split can scuff or flash.
Decision
A smooth-wall draft versus draft sized for grain
Wrong: freeze CAD on a polish draft, then add a deep etch. Right: pick the plaque, then size draft on that face.
What goes wrong
- A deep texture on a near-zero draft wall
- Add grain after T1 with no draft check
- Mix SPI and MoldTech names on one face
What to try first
- Name the plaque before CAD freeze
- Give textured walls more draft than smooth ones
- Open texture selection if the grain is still open
RFQ
Mark these on CAD before uploading for DFM review
The quote can start from CAD alone. These notes make the DFM pass specific.
Plaque or SPI callout, if you have one
Faces that will be textured
Current draft on those faces
Parting-line intent across grain
Polished regions that meet the grain
Whether texture can wait until after T1
Related
Related design guidelines
Stay on this spoke for its question. Open a sibling for the neighbor topic or the CAD check.
Texture selection
Which grain to pick.
Texture selectionSPI surface finish
Polish scale, not a texture plaque.
SPI surface finishDFM review
How NetProto reads plaque plus draft on CAD.
DFM reviewFAQ
Texture draft FAQ
Does deeper texture need more draft?
Usually yes. Use the supplier plaque. This page does not publish degrees-per-grade.
Can texture be added after T1?
Sometimes. It can still need more draft. Lock grain before steel when you can.
Is SPI the same as MoldTech?
No. SPI is a polish scale. MoldTech and VDI are texture systems. Name the plaque. Open the finish pages for the systems.
What draft should I use on texture?
Follow the plaque and the face. NetProto does not publish a draft table here. Upload CAD.
Can one part mix polish and grain?
Yes if the split and draft are planned. Mark both regions.
How is this page different from draft angle or texture selection?
Draft angle owns the smooth rule. Texture selection owns the grain. This spoke owns extra draft. DFM review checks CAD.
What information should I mark on CAD for texture draft review?
Show which faces are textured, the plaque or SPI callout, and the current draft on each face. Upload CAD so DFM review can check release before quoting.
Next step
Upload CAD and plaque notes for a texture-draft review
Share textured faces and the plaque so review can check draft before quoting.