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Browser-local CAD helpers and mechanical-design calculators for gear geometry, belt and chain drives, pulley ratios, shaft keys, GD&T, holes, threads, tolerances, sheet metal, drawings, BOMs, and manufacturing readiness.
Use ScholarTool CAD tools to check model scale, estimate tolerance stack-ups, review fit clearances, draft hole and thread callouts, calculate sheet-metal bend allowance, prepare STL handoff checklists, calculate gear dimensions, spur gear pairs, helical gear geometry, belt length, chain drives, pulley ratios, shaft keys, GD&T symbol guidance, hole sizes, thread sizes, generate drawing title blocks, build BOM templates, review engineering drawings, and organize manufacturing readiness notes without uploading CAD files or running CAD software.
CAD dimensions, mechanical-design inputs, tolerance values, checklist choices, and generated template text stay in the active browser page state. ScholarTool does not upload CAD files, drawings, manufacturing data, store CAD model data, add analytics, or call third-party CAD APIs for these helpers.
These tools do not run CAD software, mesh engines, geometry kernels, STL parsers, STEP translators, OpenCascade, CAD viewers, CAD file parsers, CAM post-processors, G-code generators, solvers, databases, authentication systems, analytics, tracking, or AI services. They are deterministic engineering helpers for review and documentation.
Review these recurring handoff mistakes before using CAD output in downstream workflows.
20 tools
Use these helpers before exchanging geometry, quoting, printing, or handing CAD data to another workflow.
Compare source, target, expected, and detected dimensions to flag CAD unit-scale mismatch risk.
Generate a practical STL preparation checklist for 3D printing, simulation handoff, and quotation review.
Calculate preliminary gear, belt, chain, and pulley relationships before supplier and detailed engineering review.
Calculate gear dimensions from module or diametral pitch.
Calculate spur gear pair geometry and ratio.
Calculate helical gear normal-to-transverse geometry.
Calculate open belt length from pulley diameters and center distance.
Calculate chain drive ratio and chain length.
Calculate pulley speed ratio and target pulley diameter.
Review torque transfer, clearance holes, thread geometry, and drawing callout support for mechanical-design handoff.
Calculate shaft key stress and required length.
Calculate preliminary hole size from nominal diameter and fit purpose.
Calculate approximate thread pitch, pitch diameter, and minor diameter.
Generate structured hole, thread, counterbore, and countersink callout text for review.
Structure preliminary tolerance, clearance, geometric-tolerance, and fit decisions before formal drawing release.
Calculate worst-case and RSS tolerance stack-up with target pass/fail guidance.
Calculate minimum and maximum clearance or interference between a hole and shaft.
Explain GD&T symbols and drawing-note review points.
Estimate bend allowance, setback, deduction, and flat length before checking shop-specific bend tables.
Calculate bend allowance, bend deduction, setback, and flat length guidance.
Organize title blocks, BOMs, drawing reviews, and release-readiness reviews.
Generate a clean engineering drawing title-block text and table template.
Generate a bill of materials template for assemblies, drawings, prototypes, and manufacturing handoff.
Generate a drawing review checklist for dimensions, tolerances, notes, revisions, and manufacturing readiness.
Generate a manufacturing-readiness checklist for CAD models, drawings, BOMs, tolerances, and supplier handoff.
No. The CAD helpers and mechanical-design calculators work from typed dimensions, checklist choices, and template text in the browser. They do not upload CAD files, parse STL geometry, open proprietary CAD formats, or repair models automatically.
Use them as structured review aids only. Final drawings, tolerance decisions, manufacturing releases, and compliance decisions must be checked against applicable standards, validated CAD/CAM workflows, supplier requirements, and qualified engineering judgment.
No. CAD checklist inputs, mechanical-design values, dimensions, tolerance values, and template text are processed locally in the active browser page state. ScholarTool does not add CAD analytics, file storage, accounts, or third-party CAD APIs.
No. CAD, STL, STEP, DXF, DWG, and software-related terms are used only as generic engineering workflow references. ScholarTool does not claim endorsement by any CAD software vendor.
No. Gear, belt, chain, pulley, shaft-key, GD&T, hole, and thread outputs are preliminary planning support only. Verify final dimensions, tolerances, materials, supplier requirements, standards, inspection methods, and professional engineering judgement before release.
Unit scale, tolerance stacks, fits, bend allowance, gear and drive geometry, shaft keys, hole and thread sizes, GD&T guidance, and drawing templates all use browser-local typed values.
Use worst case when every limit must assemble and a statistical method only when contributor distributions, independence, process capability, and acceptance rules justify it.
No. They calculate limit relationships from entered dimensions and tolerances; standards, function, temperature, finish, process capability, and supplier practice control the final fit.
Check strength, fatigue, contact stress, backlash, lubrication, keyway standards, stress concentration, fits, materials, supplier data, and manufacturability.
It explains symbols and structure, but datum schemes, tolerance zones, modifiers, drawing context, standard edition, and inspection method require qualified review.
CAD Tools organize typed dimensional, tolerance, fit, drawing, BOM, GD&T, and mechanical-design information. They do not upload, parse, repair, or execute CAD geometry.
Start from functional requirements and the governing drawing standard, enter dimensions and assumptions, review generated calculations or checklists, and confirm manufacturability and inspection requirements with the actual drawing and suppliers.
Typed values are not linked to a model file. Fits, tolerances, threads, surface finish, datum schemes, and release documentation remain subject to standards, process capability, material behavior, and qualified approval.