Learn how good products are designed — and manufactured.
DIVE-LD turns mechanical design, CAD, DFM, tolerancing and manufacturing into clear guides, visual explanations and practical engineering tools.
Go from material choice to CAD geometry and manufacturing judgement
The library covers injection-molding DFM, CAD exchange, GD&T, CNC, sheet metal, FDM, engineering drawings and a new engineering materials database.
Design for Manufacturing
Draft, walls, ribs, bosses, undercuts, tooling and tolerances.
CAD & Drawings
File formats, robust parametric models and manufacturing handoff.
Manufacturing
Injection molding, CNC, sheet metal and additive processes.
Engineering Materials
Sixteen practical profiles covering polymers and metals.
GD&T & Tolerancing
Datums, position, stack-up and drawing communication.
See the design logic, not just the rule
V0.4 adds original technical diagrams and a material-selection layer to connect geometry decisions with manufacturing and service conditions.
Wall Thickness in Injection Molding
How wall thickness affects filling, cooling, sink, warpage and cost in injection molded plastic parts.
Tolerancing · GD&TGD&T Basics for Mechanical Designers
Understand why geometric dimensioning and tolerancing controls form, orientation and location more clearly than coordinate dimensions alone.
Manufacturing · CNC machiningCNC Machining Design Rules
Practical CNC design rules for internal corners, cavities, holes, tool access and tolerances.
Calculate, then understand the assumptions
All six tools run locally in your browser. No sign-in and no engineering inputs are uploaded to a server.
Tolerance Stack Calculator
Nominal stack, worst-case limits and RSS statistical limits.
LiveDraft Angle Calculator
One-side offset and total dimensional change from taper.
LivePress / Clearance Fit Calculator
Classify hole-shaft fits from actual limit dimensions.
LiveMolding Shrinkage Calculator
Estimate a starting mold dimension from linear shrinkage.
Live3D Printing Clearance Calculator
Process-specific starting clearances for common fit intents.
NewMaterial Comparison Tool
Compare common polymers and metals by qualitative engineering criteria.
ToolboxBrowse all tools
Open calculators and see the next planned engineering utilities.
Working on a real CAD model?
DIVE-LD is educational. Project-specific manufacturability reviews remain separate from the publication.