No published degree
Industry tables exist. NetProto does not reprint one as a specification.
Draft angle
Draft Angle: Give Every Pull Face a Release Slope
Mark pull direction, textured faces, and walls with no slope. DFM review comments on CAD. This page does not publish a draft degree.
Design guideline
A vertical wall drags. A sloped wall leaves.
Draft is the slope that lets a face leave the steel. Texture uses more of that slope. This page owns the release angle. Texture draft owns grain. Ejection design owns how the part is pushed.
Draft angle is the slope that lets a face leave the tool. Faces that pull on mold open need it. Texture uses more of that slope. Texture draft requirements own the grain. Ejection design owns the push. DFM review needs pull direction.
This spoke owns the release angle. It does not publish a degree. Undercuts own faces that cannot draft out. The deep-cavity draft article covers deep boxes. The design guide hub lists every topic.
Roles
Which page answers which draft question
Stay here for the release slope. Open a sibling for texture, ejection, or a deep cavity.
| Page | Use it for |
|---|---|
| Draft angle (this page) | Slope so a face can leave the steel |
| Texture draft requirements | Grain that uses more of that slope |
| Ejection design | How the part is pushed out |
| Undercuts | Faces that cannot draft out |
| Rib design | Draft on rib sidewalls |
| Deep-cavity draft article | Deep boxes that drag |
| DFM review | CAD check before steel |
Checks
What DFM review looks for on draft
Qualitative checks. No figure on this page is a NetProto specification.
Texture eats slope
Call the plaque before you assume a smooth-wall draft is enough.
Pull direction first
Mark which way the tool opens. Draft follows that axis.
Zero draft is a drag
A vertical cosmetic wall often scuffs. Redesign or accept the mark.
Decision
A vertical textured wall versus a drafted face
Wrong: a deep textured box with no slope. Right: pull direction marked, texture called, draft on every pull face.
What goes wrong
- Zero draft on a deep textured wall
- No pull-direction note on CAD
- A degree copied from a blog and treated as a spec
What to try first
- Mark pull direction and textured faces
- Open texture draft if grain is on the wall
- Upload CAD so DFM review can comment before quoting
RFQ
Mark these on CAD before uploading for DFM review
The quote can start from CAD alone. These notes make the draft pass specific.
Pull direction on a view or PDF
Faces that have no slope today
Textured faces and the plaque or SPI callout
Deep cores that may drag
Parting line if the draft is asymmetric
Cosmetic class on drag-risk faces
Related
Related design guidelines
Stay on this spoke for its question. Open a sibling for the neighbor topic or the CAD check.
Deep-cavity draft article
Deep boxes that drag.
Deep-cavity draft articleDFM review
How NetProto reads pull direction on CAD.
DFM reviewFAQ
Draft angle FAQ
What is draft angle?
It is the slope that lets a molded face leave the steel. Faces that pull on mold open need it. This page owns that slope.
What draft does NetProto publish?
None. Industry tables exist. They are not a NetProto specification. Upload CAD so DFM review can comment on your wall, texture, and depth.
Does texture need more draft?
Grain uses some of the slope that would otherwise release the part. Open texture draft requirements. Call the plaque on the RFQ.
What if I cannot add draft?
Expect drag, a scuff, or an undercut action. DFM review comments on CAD. Do not leave a vertical cosmetic wall unexplained.
How is this page different from texture draft or ejection?
This spoke owns the release angle. Texture draft owns grain. Ejection design owns the push. DFM review checks CAD.
What information should I mark on CAD for draft review?
Show pull direction, faces with no slope, textured walls, and deep cores. Upload CAD so DFM review can comment before quoting.
Next step
Upload CAD for DFM review of draft
Share pull direction and textured faces so review can comment before quoting.