References · CNC machining in the catalogue · Markdown · JSON

References · Manufacturing

CNC machining

44 records: 7 read sources that cad-agent's rules and checks may cite, and 37 records catalogued from the Reference Map, not yet read. Milled and turned parts.

Catalogued records are search snippets: their numbers are the authors' claims and their licences are as the map states them, unread. Cite one only after reading the source and promoting it (how).

Coverage

What cad-agent checked for these topics when the map was made, and the gap it found. The issue it drafted for each gap was never posted.

  • PartlyCNC: internal corner radius, pocket depth, tool access

    Gap: Rules in YAML only; dfm.check has no corner, pocket or tool-reach kinds and no geometry measurement; no 3-axis access/undercut analysis, thin-wall or tapped-hole depth checks.

    Drafted issue, never posted: “Add CNC kinds to dfm.check and a tool-access analysis”

Evidence how far each has been checked, lowest rung first
snippet only: 37snippet only37read: 7read7verified at source: 0verified at source0encoded: 0encoded0measured: 0measured0
Confidence #143, derived from the evidence
high: 0high0medium: 0medium0low: 44low44unknown: 0unknown0
Kind
Guide: 42Guide42Standard: 2Standard2
Licence class as stated; most not yet read
proprietary: 44proprietary44
Process
CNC machining: 44CNC machining44Inserts and fasteners: 4Inserts and fasteners4General DFM: 3General DFM3Sheet metal and laser: 2Sheet metal and laser2

Records

44 records

RecordKindEvidenceConfidenceLicenceProcessRole
CNC Machining Design Tip: Optimizing Internal Corner RadiiXometry · 2020

Explains non-standard inside radius can help because the end mill needs clearance to turn in the corner.

Read: 2026-10-31: the live page answers scripts with HTTP 429, so read the Internet Archive copy of 2026-03-07 (web.archive.org/web/20260307153318/…). Byline "Written by Dean McClements, Updated by Aaron Lichtig"; published 2020-09-29, updated 2…

xometry-cnc-corner-radii cited by 2 files

Guidereadlow 0.4proprietarynot readCNC machiningnot assessed
Design Guidelines: CNC MillingProtolabs

Protolabs milling limits page; snippets show min wall and standard tolerance of automated factory.

Read: 2026-10-31: opened the page; read size limits (2 in milled depth per side), the tolerance (±0.005 in, and ISO 2768-1 medium or fine), feature and nominal thickness, threads (M2–M12) and text.

unconfirmed Walls thinner than 0.020 in (0.5 mm) typically do not survive machining.

protolabs-cnc-milling cited by 2 files

Guidereadlow 0.4proprietarynot readCNC machiningnot assessed
Design Guidelines: CNC TurningProtolabs

Turning limits: groove width/depth, minimum diameter and length, ID grooves unsupported.

Read: 2026-10-31: opened the page; read the smallest diameter (0.030 in), wall thickness (0.020 in) and hole sizes.

unconfirmed Max OD groove depth 0.95 in (24.1 mm); min groove width 0.019 in.

protolabs-cnc-turning cited by 2 files

GuidereadAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningnot assessed
Guidelines for Threaded Holes in CNC MachiningProtolabs

Protolabs' CNC thread tables: UNC and UNF from #2-56 to 1/2-13 and metric coarse and fine from M2 to M12, each with its thread depth.

Read: 2026-11-04: opened the page (it redirects to the en-gb services page); read the thread tables: UNC and UNF from #2-56 to 1/2-13, metric coarse and fine from M2 to M12, with their depths.

unconfirmed Threads offered UNC/UNF #2 to 1/2 in and metric M2 to M12

protolabs-guidelines-for-threaded-holes-in-cnc-machining

GuidereadAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningInserts and fastenersnot assessed
Helicoil install guide (Albany County Fasteners)Albany County Fasteners

Helical coil insert installation by insert type: drill, tap with an STI tap (not a standard one), install, break the tang, and seat the coil 1/4 to 1/2 turn below the surface.

Read: 2026-11-04: opened the PDF; read the install steps per insert type (drill, STI tap, install, break the tang) and the seating depth.

unconfirmed Seat the coil 1/4 to 1/2 turn below the surface; an STI tap, not a standard tap

albany-county-fasteners-helicoil-install-guide-albany-county

Guidereadlow 0.4proprietarynot readInserts and fastenersCNC machiningnot assessed
How to design parts for CNC machiningProtolabs Network (formerly Hubs)

Hubs recommended and feasible limits for walls, holes and threads, per search summary.

Read: 2026-10-31: opened the page; read the table of recommended and feasible values (cavities, internal edges, floor radii, walls, holes, threads, small features, tolerances, text) and the undercut section.

corroborated Min wall 0.8 mm metals, 1.5 mm plastics (feasible 0.5 and 1.0 mm).

hubs-cnc-design cited by 2 files

GuidereadAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningnot assessed
Video: 10 Tips to Improve Your CAD Designs for CNC MachiningXometry · 2022

Xometry CAD tips; snippets show min wall and corner radius figures across Xometry pages.

Read: 2026-10-31: the live page answers scripts with HTTP 429, so read the Internet Archive copy of 2026-05-15 (web.archive.org/web/20260515023712/…). Byline "Written by Joel Schadegg, Updated by Greg Paulsen"; published 2022-11-15, updated 2026…

corroborated Standard minimum wall 0.794 mm metals, 1.5 mm plastics.

xometry-cnc-10-tips cited by 2 files

Guidereadlow 0.4proprietarynot readCNC machiningnot assessed
5-Axis CNC Machining (Fictiv)Fictiv

Covers 3+2 and simultaneous 5-axis configurations. Note: Snippet only

fictiv-5-axis-cnc-machining-fictiv

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
6 Ways to Optimize Part Design for CNC MachiningProtolabs

Protolabs tips on pocket depth with relief radii, tool access and wall stiffness. Note: Figures vary between regional pages

unconfirmed Functionally sharp corners to about 1-1/4 in (32 mm) depth with relief radii.

protolabs-6-ways-to-optimize-part-design-for-cnc-machining

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
ASME Y14.5-2018 dimensioning and tolerancingSFS standards store

US GD&T standard covering datums, form, orientation, position, profile and runout. Note: Store listing; full text paid

sfs-standards-store-asme-y14-5-2018-dimensioning-and

Standardsnippet onlylow 0.4proprietarynot readGeneral DFMCNC machiningnot assessed
Best Practice Tips for Correct Tolerancing (meviy)Misumi (meviy)

News coverage of Misumi meviy tolerancing guide: how tolerance affects fit, cost, lead time. Note: Secondary news coverage; guide text not seen

misumi-best-practice-tips-for-correct-tolerancing-meviy

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
CNC Design Guide (Fictiv ebook)Fictiv

Gated ebook on sizes and shapes to avoid and drilling, milling, turning quality. Note: Gated; body not seen

fictiv-cnc-design-guide-fictiv-ebook

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
CNC hole design: through, blind, tapped and moreProtolabs

Hole design blog; snippet shows depth limit tied to end mill length. Note: Snippet only

unconfirmed Holes deeper than six diameters are challenging; may need machining from both sides.

protolabs-cnc-hole-design-through-blind-tapped-and-more

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
CNC Machining Aluminum 6061 vs 7075 guideBoen Rapid

6061 vs 7075: 6061 default; 7075 stronger, costlier, wears tools faster. Note: Vendor blog; unverified figures

boen-rapid-cnc-machining-aluminum-6061-vs-7075-guide

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
CNC Machining Cost ReductionXometry

Cost-reduction advice including inside corner radius guidance and tolerance restraint. Note: Snippet only

unconfirmed Inside corner radius L:D ratio of 3:1 or less; keep radii uniform.

xometry-cnc-machining-cost-reduction

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
CNC machining design guidelines: why your CAD model costs 10x moreModus Advanced

Title shows cost-driver focus; content not shown in snippet. Note: Title only

modus-advanced-cnc-machining-design-guidelines-why-your-cad

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
CNC Undercuts: Why They Are ExpensiveSendCutSend

Undercuts can drive up cost or make parts unmachinable; design alternatives. Note: Snippet only

sendcutsend-cnc-undercuts-why-they-are-expensive

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Cuckoo for Swiss machiningCutting Tool Engineering

Trade magazine article on Swiss machining; conventional lathe L/D limits about 3:1 without guide bushing. Note: Snippet only

cutting-tool-engineering-cuckoo-for-swiss-machining

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Deep Pockets and Slots (SolidWorks DFMXpress)Dassault Systemes SolidWorks

DFM rule for milled pockets and slots tied to end mill length-to-diameter. Note: Snippet only

unconfirmed End mill length-to-diameter ratio no greater than 3:1.

dassault-systemes-solidworks-deep-pockets-and-slots

Guidesnippet onlyAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningnot assessed
Delrin (Acetal) CNC MachiningXometry

Acetal machining notes: min wall, stock sizes, visible tool marks hidden by bead blasting. Note: Snippet only

unconfirmed Avoid wall thickness below 0.060-0.080 in for acetal.

xometry-delrin-acetal-cnc-machining

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Design for subtractive manufacture (Fusion cert prep)Autodesk

Course unit: parts reachable from top, no overhangs; Accessibility Analysis flags undercuts. Note: Snippet only

autodesk-design-for-subtractive-manufacture-fusion-cert-prep

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Designing CNC milled parts: fillets, wall thickness, tool accessClarwe

Fillets, wall thickness and tool access explained; fallback if nothing better. Note: Shop blog; snippet title only

clarwe-designing-cnc-milled-parts-fillets-wall-thickness

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Groove Design for CNC Turning (meviy)Misumi (meviy)

Groove depth-to-width ratio governs chip evacuation; deep narrow grooves clog. Note: Snippet only

misumi-groove-design-for-cnc-turning-meviy

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Guide to CNC Machining Tolerances (Makerverse)Makerverse

Tolerance guide; tighter tolerances cost more regardless. Note: Snippet only

makerverse-guide-to-cnc-machining-tolerances-makerverse

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
How to Install Key-Locking InsertsMcMaster-Carr

Key-locking insert install notes; tap size can differ from insert thread; comparable to Keensert. Note: Snippet had no figures

mcmaster-carr-how-to-install-key-locking-inserts

Guidesnippet onlylow 0.4proprietarynot readInserts and fastenersCNC machiningnot assessed
How to Reduce CNC Machining Costs (Protolabs design tip)Protolabs

Cost-reduction tip appearing in corner radius and design results. Note: Specific numbers not visible in snippet

protolabs-how-to-reduce-cnc-machining-costs-protolabs-design

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
ISO 2768 (Xometry)Xometry

Xometry page on ISO 2768 general tolerances; appeared in results, content not shown in snippet. Note: Only title seen; content unconfirmed

xometry-iso-2768-xometry

Guidesnippet onlylow 0.4proprietarynot readCNC machiningGeneral DFMSheet metal and lasernot assessed
ISO 2768 general tolerances: tables, classes, statusWevolver

Covers ISO 2768 classes f, m, c, v and geometric classes H, K, L. Note: Medium value differs by source

unconfirmed Linear 6-30 mm: fine +/-0.1, medium +/-0.2, coarse +/-0.5 mm (one table).

wevolver-iso-2768-general-tolerances-tables-classes-status

Guidesnippet onlyAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningSheet metal and lasernot assessed
ISO 286 limits and fits: H7/g6 (Machining Doctor)Machining Doctor

ISO 286 fit explanation: H7/g6 sliding clearance; H7/p6 and r6 interference. Note: Calculator pages; some errors seen across sources

unconfirmed Dia 25 H7/g6 clearance 7-41 um; H7/p6 interference about 1-35 um.

machining-doctor-iso-286-limits-and-fits-h7-g6-machining

Guidesnippet onlyAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningGeneral DFMnot assessed
Modus: Design features that reduce lead times and costsModus Advanced

13 design considerations; e.g. specify edge breaks instead of modeled chamfers. Note: No tolerance-cost numbers in snippet

modus-advanced-modus-design-features-that-reduce-lead-times

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
More Axes, More Money: 3-axis vs 3+2 vs 5-axisSendCutSend

Compares cost and time of 3, 3+2 and 5-axis machining. Note: Snippet only

sendcutsend-more-axes-more-money-3-axis-vs-3-2-vs-5-axis

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Optimising CNC Machining Design for Precision and Production EfficiencyQuickparts

Quickparts design guidance including internal radius to pocket depth ratio. Note: Snippet via search summary

unconfirmed Internal radius to pocket depth ratio of 1:8 for structural stability.

quickparts-optimising-cnc-machining-design-for-precision-and

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
PRC-5006 anodize process requirementsNASA

NASA anodize process spec; fragmentary snippet on Type III design guidance. Note: Snippet fragmentary

nasa-prc-5006-anodize-process-requirements

Standardsnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Protolabs Network manufacturing standardsHubs (Protolabs Network)

Network default finish and edge-break standards for machined parts. Note: Snippet only

unconfirmed Default as-machined finish Ra 3.2 um (126 uin); sharp edges and burrs removed.

hubs-protolabs-network-manufacturing-standards

Guidesnippet onlyAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningnot assessed
Reducing CNC Machining Costs: 13 Design TipsHubs (Protolabs Network)

Cost tips: limit hole depth, thread length, tolerances; relief at blind hole bottoms. Note: Snippet only

unconfirmed Hole depth about 4x diameter; thread length about 3x hole diameter.

hubs-reducing-cnc-machining-costs-13-design-tips

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Selecting the right CNC material: 25 materials comparedHubs (Protolabs Network)

Compares stock machining metals: 1018, 4140, 304, 316, 6061; guidance by corrosion, strength, weight. Note: Details from search summary

hubs-selecting-the-right-cnc-material-25-materials-compared

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Sheet: CNC machining design guidelines (SendCutSend)SendCutSend

SendCutSend CNC limits: min internal cutout and internal radius, wall-to-wall fillet rule. Note: No min wall number seen

corroborated Min internal radius 1.587 mm (0.0625 in); wall corner fillet at least cutter radius or 1/5 wall height.

sendcutsend-sheet-cnc-machining-design-guidelines

Guidesnippet onlyAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningnot assessed
Surface finishes for CNC machining (Hubs)Hubs (Protolabs Network)

Covers bead blasting, anodizing Type II/III, powder coating and process order. Note: No numeric rules seen

hubs-surface-finishes-for-cnc-machining-hubs

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
The Complete Guide to Designing Tight Tolerance PartsFictiv

Gated ebook on tight-tolerance design and drawings; GD&T and stack-up topics seen elsewhere. Note: Gated; body not seen

fictiv-the-complete-guide-to-designing-tight-tolerance-parts

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
Threaded Holes (Xometry)Xometry

Defines deep threaded hole and advises adding a boss for extra thread thickness. Note: Snippet only

unconfirmed Deep threaded hole: thread depth over 1.5x thread diameter.

xometry-threaded-holes-xometry

Guidesnippet onlylow 0.4proprietarynot readCNC machiningInserts and fastenersnot assessed
Understanding and Specifying AnodizingOMW Corp

Anodizing specification primer from a finisher; content not shown in snippet. Note: Finisher PDF; title only

omw-corp-understanding-and-specifying-anodizing

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
What Every Designer Needs to Know About CNC Part TolerancesXometry

Tolerance primer; advises tight or geometric tolerances only on critical areas. Note: Title and tolerance advice from snippets only

unconfirmed Apply tight and/or geometric tolerances only to critical areas.

xometry-what-every-designer-needs-to-know-about-cnc-part

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
What is Delrin (Hubs)Hubs (Protolabs Network)

Delrin is stable and machinable but can deform with heat; radii and selective tolerances cut cost. Note: Snippet only

unconfirmed Large Delrin parts can shrink about +/-0.05 mm.

hubs-what-is-delrin-hubs

Guidesnippet onlylow 0.4proprietarynot readCNC machiningnot assessed
What is Swiss machining: Swiss-type CNC lathes explainedWevolver

Swiss lathe overview: L/D advantages and routine tolerances. Note: Vendor figures disagree

unconfirmed L/D above 3:1 favors Swiss; above 10:1 practically requires it; about +/-0.005 mm.

wevolver-what-is-swiss-machining-swiss-type-cnc-lathes

Guidesnippet onlyAuthors' claim: numbers stated, not measuredlow 0.4proprietarynot readCNC machiningnot assessed

Role is the survey's judgement of a record within its class (leader, reference, lessons, context): not a quality grade. A single source, a search snippet, or untested judgement is what “low” means.