Hole Pattern Programming App vs DWG, STL & 3D CAD File Viewer

Hole Pattern Programming App is a powerful, professional, and easy-to-use app designed for engineers, machinists, VMC programmers, VMC operators, CAD designers, fabrication professionals, and students who require accurate, error-free hole layout calculations and VMC programming support. The app supports virtually every type of hole arrangement — from simple linear rows to advanced multi-PCD mesh structures. Whether you are working on flanges, plates, jigs, fixtures, decorative panels, or precision mechanical parts, this tool simplifies even the most complex drilling and tapping calculations. Simply enter a few key dimensions and the app instantly generates: • Exact X–Y coordinates • Visual preview of the hole layout • Hole sequence numbering • Optional VMC drilling and tapping programs Even if your hole center is not at X0, Y0, you can change the origin and the app will automatically recalculate all coordinates accurately. Supported Hole Patterns • Single and Multiple PCD (Pitch Circle Diameter) • Full circle or limited angular span PCD • Linear patterns (horizontal, vertical, or angled) • Circular bolt circle layouts • Rectangular grids • Border-only hole layouts • Angular linear patterns • Mesh / lattice structures using multiple PCDs Key Features PCD Hole Patterns Create full or partial angular span hole arrangements on single or multiple PCDs. Linear Hole Patterns Generate straight or angled rows of holes at any custom angle. Rectangular Patterns Fill complete rectangular areas or generate holes only along borders. Mesh / Lattice Structures Create complex multi-PCD patterns for structural and decorative designs. Custom Center Adjustment Change origin (X0, Y0) and automatically recalculate all coordinates. Coordinates & Visual Preview Get precise X-Y coordinates with a visual layout of every hole. Hole Sequence Numbering Automatic numbering from 1 to total holes for easy reference. VMC Programming Support Generate ready-to-use drilling, center drilling, and tapping programs. Editable Drill & Tap Parameters Customize drill depth, tap depth, pitch, and sequence. Flexible Output Options Copy coordinates, copy full VMC program, or share using the Share button. Automatic Error Handling If required inputs are missing, the app shows clear messages instead of crashing. Metric & Imperial Units Work seamlessly in millimeters (mm) or inches. User-Friendly Interface Designed for fast use in workshop, field, or office environments. Practical Use Cases Flange & Bolt Circle Layouts – Design precise PCD holes with full or partial spans. Linear Hole Rows – Create straight or angled hole rows on plates and sheets. Rectangular Plates – Fill areas or generate border-only patterns. Mesh / Lattice Designs – Complex structural or decorative layouts. Custom Center Workflows – Adjust coordinates to match machine zero or fixture setup. Workshop & CAD Planning – Use coordinates for manual drilling or CAD input. VMC / CNC Programming – Instantly generate editable drilling and tapping programs. Why Choose Hole Pattern Programming App? Supports all major hole layout types – linear, circular, rectangular, border-only, angular, multi-PCD, and mesh. Ensures error-free and reliable calculations. Saves time compared to manual methods or spreadsheets. Provides coordinates + visual preview for complete clarity. Generates CNC-ready VMC programs. Fully customizable and easy to share. Stable and safe – guides users instead of crashing. Use Hole Pattern Programming App today and simplify your machining and hole layout workflow. From single PCD to complex multi-pattern designs, from coordinates to CNC programs — everything you need is now available in one powerful professional tool.

Open DWG and DXF drawings or STEP, IGES, STL, OBJ, 3MF, PLY, USDZ and glTF models. Inspect your CAD files and measurements on your device. New 7-day Pro pass: unlimited CAD files and all Pro features, paid once with no automatic renewal. OPEN AND INSPECT - Import drawings and models directly from Files - Orbit, pan and zoom a responsive 3D scene - Browse, hide and isolate objects in multi-part models - Review bounds, triangle count and surface area with units, plus enclosed volume for closed meshes - See drawing text, dimensions, hatches and layer colours, and switch to paper-space layouts - Switch wireframe, transparency, axes, grid, bounding box and orthographic views MEASURE AND PLOT - Measure DWG/DXF drawings free with snaps to endpoints, midpoints, centers and intersections. - Measure distance with ΔX/ΔY and angle, polyline length, room area and radius/diameter; save measurements in the inspection report. - Plot a vector PDF at 1:N scale on A4–A0 or Letter–ANSI E, with line weights, colors and real text; requires CadRoam Pro. PRIVATE BY DESIGN Drawing and model geometry is processed locally. CadRoam does not upload file contents to a developer-operated conversion service, requires no account and includes no third-party advertising, analytics or tracking SDK. CAMERA AR AND REPORTS On supported iPhone and iPad devices, CadRoam Pro places compatible geometry on detected surfaces with Apple ARKit. Choose fitted scale or source units, then move, rotate and resize the model. Generate a compact inspection PDF locally, with a picture of the current view, then save, share or print it. Open and inspect three unique CAD files free. Reopening the same file or using the built-in sample does not consume another free opening. CadRoam Pro unlocks unlimited private opening, camera AR, PDF report export and PDF plots across iPhone, iPad and Mac. Get Pro with an optional monthly or yearly subscription or a one-time lifetime purchase. CURRENT FORMAT SUPPORT - DWG R13–R2018+ linework, curves, blocks, text, dimensions, hatches, layer and object colours, and paper-space layouts - ASCII and binary DXF R12–R2018+ with the same drawing content plus mesh faces - Binary and ASCII STL - OBJ with objects, groups and vertex colours - 3MF print projects with components and colours - PLY scans with vertex colours - USDZ and USD scenes, glTF and GLB, with material colours - Faceted, AP242 tessellated and exact B-Rep STEP - IGES B-Rep and curved surfaces In DWG and DXF, text uses a system font instead of the drawing's own fonts and dashed linetypes are drawn solid; ACIS 3D solids, images, tables and external references are not shown, and CadRoam warns when content is omitted. Textures in USDZ, glTF and 3MF files are not shown. STEP and IGES coverage varies across schema editions and exporter-specific records. CadRoam is not a certified metrology system. Terms of Use: https://cadroam.com/terms/ Privacy Policy: https://cadroam.com/privacy/