3dfiles guideshttps://3dfiles.app/guides/Practical guides on 3D file formats, conversion, mesh repair and 3D printing.3D File Formats Explained: Which One Should You Use?https://3dfiles.app/guides/3d-file-formats-explained/https://3dfiles.app/guides/3d-file-formats-explained/STL, OBJ, 3MF, STEP, IGES, glTF/GLB, FBX, PLY, USDZ and G-code compared: what each format stores, who uses it, and which to pick for printing, CAD, web or AR.Tue, 27 Oct 2026 00:00:00 GMTHow to View 3D Models in AR on iPhone, iPad and Androidhttps://3dfiles.app/guides/3d-models-in-ar-on-iphone/https://3dfiles.app/guides/3d-models-in-ar-on-iphone/View 3D models in AR with USDZ and Quick Look on iPhone, or GLB and Scene Viewer on Android: converting STL/OBJ, scale, materials, file size, embedding.Tue, 27 Oct 2026 00:00:00 GMTHow to convert and view 3D files without uploading them to a serverhttps://3dfiles.app/guides/convert-3d-files-without-uploading/https://3dfiles.app/guides/convert-3d-files-without-uploading/Why uploading CAD, scan and patient files to online converters is a risk under NDA, GDPR and HIPAA, how in-browser WebAssembly tools work, DevTools check.Tue, 27 Oct 2026 00:00:00 GMTConverting FBX game assets to OBJ or GLB: what survives, what does not, and the unit traphttps://3dfiles.app/guides/fbx-to-obj-or-glb/https://3dfiles.app/guides/fbx-to-obj-or-glb/FBX to OBJ or GLB: what survives (mesh, bind pose, materials), what does not (rigs in OBJ), the centimetre scale trap, Blender steps vs online conversion.Tue, 27 Oct 2026 00:00:00 GMTHow to Find and Fix Non-Manifold STL Fileshttps://3dfiles.app/guides/fix-non-manifold-stl/https://3dfiles.app/guides/fix-non-manifold-stl/Learn what watertight and manifold mean, how to spot holes, flipped normals and self-intersections, and how to repair STL files in slicers, Blender and MeshLab.Tue, 27 Oct 2026 00:00:00 GMTWhy GLB and glTF models come out tiny or sideways in slicers, and how to fix ithttps://3dfiles.app/guides/glb-to-stl-scale-problems/https://3dfiles.app/guides/glb-to-stl-scale-problems/GLB and glTF models import 1000 times too small or lying sideways because glTF uses metres and Y-up while slicers assume mm and Z-up. How to fix it.Tue, 27 Oct 2026 00:00:00 GMTGLB vs glTF: What Is the Difference?https://3dfiles.app/guides/glb-vs-gltf/https://3dfiles.app/guides/glb-vs-gltf/GLB vs glTF explained: JSON plus external files versus one binary package, when to use each, Draco and meshopt compression, converting, and file size tips.Tue, 27 Oct 2026 00:00:00 GMTGridfinity bin sizing guide: choosing units and heights, fitting a drawer, print settingshttps://3dfiles.app/guides/gridfinity-bin-sizing-guide/https://3dfiles.app/guides/gridfinity-bin-sizing-guide/How to size Gridfinity bins: 42 mm units, 7 mm height units, how many fit a drawer, baseplate tiling and spacers, heights for common contents, print settings.Tue, 27 Oct 2026 00:00:00 GMTGridfinity Explained: The 42 mm Modular Storage Systemhttps://3dfiles.app/guides/gridfinity-explained/https://3dfiles.app/guides/gridfinity-explained/What Gridfinity is and how it works: the 42 mm grid, 7 mm height units, baseplates vs bins, magnets, stacking lip, print settings and drawer layout.Tue, 27 Oct 2026 00:00:00 GMTHow to 3D Print a QR Code That Scans Reliablyhttps://3dfiles.app/guides/how-to-3d-print-qr-code/https://3dfiles.app/guides/how-to-3d-print-qr-code/Design a 3D printed QR code that scans: module size vs nozzle, minimum size, error correction, quiet zone, colour swaps, inlays, raised vs recessed, testing.Tue, 27 Oct 2026 00:00:00 GMTHow to check an STL file before printing: the pre-print checklisthttps://3dfiles.app/guides/how-to-check-stl-before-printing/https://3dfiles.app/guides/how-to-check-stl-before-printing/A pre-print STL checklist: watertight mesh, normals, scale and units, wall thickness, overhangs, bed fit and triangle count, with tools and numbers for each.Tue, 27 Oct 2026 00:00:00 GMTHow to open, inspect and edit 3MF files (Bambu, Prusa, Orca projects)https://3dfiles.app/guides/how-to-open-3mf-file/https://3dfiles.app/guides/how-to-open-3mf-file/Open 3MF files in any slicer, Windows 3D Viewer or the browser, see what Bambu Studio and PrusaSlicer store inside, extract the STL and fix files that fail.Tue, 27 Oct 2026 00:00:00 GMTHow to Open a STEP File Without CAD Softwarehttps://3dfiles.app/guides/how-to-open-step-file-without-cad/https://3dfiles.app/guides/how-to-open-step-file-without-cad/Free ways to open and view STEP (.step/.stp) files without SolidWorks: browser viewers, FreeCAD, eDrawings, Fusion and Onshape, plus converting STEP to STL.Tue, 27 Oct 2026 00:00:00 GMTHow to Open an STL File on Windows, Mac, Linux and Phonehttps://3dfiles.app/guides/how-to-open-stl-file/https://3dfiles.app/guides/how-to-open-stl-file/Open and view STL files for free on Windows, Mac, Linux, iPhone, Android or in the browser, check size and triangle count, and fix files that will not open.Tue, 27 Oct 2026 00:00:00 GMTHow to Price 3D Prints: A Practical Costing Methodhttps://3dfiles.app/guides/how-to-price-3d-prints/https://3dfiles.app/guides/how-to-price-3d-prints/Price 3D printing jobs properly: material, machine time, electricity, labour, failure rate, finishing, overhead and markup, with FDM and resin examples.Tue, 27 Oct 2026 00:00:00 GMTHow to Turn an Image into a 3D Model: 4 Methods Comparedhttps://3dfiles.app/guides/image-to-3d-model/https://3dfiles.app/guides/image-to-3d-model/Turn an image into a 3D model: heightmap relief and lithophanes, SVG logo extrusion, photogrammetry and single-image generators compared for 3D printing.Tue, 27 Oct 2026 00:00:00 GMTIntraoral Scan Files: STL, PLY and OBJ Exports for Dental Labshttps://3dfiles.app/guides/intraoral-scan-stl-ply-files/https://3dfiles.app/guides/intraoral-scan-stl-ply-files/What intraoral scanners export, when to use STL, PLY or OBJ, what dental labs need, file sizes, checking scans for holes and margins, and secure sending.Tue, 27 Oct 2026 00:00:00 GMTHow to Make and Print a Great Lithophanehttps://3dfiles.app/guides/lithophane-printing-guide/https://3dfiles.app/guides/lithophane-printing-guide/A practical lithophane guide: choosing and preparing photos, thickness settings, flat vs curved shapes, FDM and resin print settings, lighting, and common fixes.Tue, 27 Oct 2026 00:00:00 GMTHow to Make a 360° Lithophane Lamphttps://3dfiles.app/guides/make-a-lithophane-lamp/https://3dfiles.app/guides/make-a-lithophane-lamp/Make a 360° cylindrical lithophane lamp: image aspect ratio and circumference maths, diameter, wall thickness, safe LEDs, base design and print settings.Tue, 27 Oct 2026 00:00:00 GMTOBJ vs STL: what each stores and which one to usehttps://3dfiles.app/guides/obj-vs-stl/https://3dfiles.app/guides/obj-vs-stl/OBJ vs STL compared for 3D printing and modelling: geometry, colour and textures, file size, units, quads vs triangles, slicer support and how to convert.Tue, 27 Oct 2026 00:00:00 GMTHow to Reduce STL File Sizehttps://3dfiles.app/guides/reduce-stl-file-size/https://3dfiles.app/guides/reduce-stl-file-size/Why STL files get huge and how to shrink them: binary STL, 3MF, decimation targets for printing, web and CAD, and steps in Blender, Meshmixer and PrusaSlicer.Tue, 27 Oct 2026 00:00:00 GMTEstimating Resin Usage and Cost for Dental Printshttps://3dfiles.app/guides/resin-usage-dental-models/https://3dfiles.app/guides/resin-usage-dental-models/How to estimate resin volume and cost per part for SLA, DLP and MSLA dental printing: supports, waste, hollow and horseshoe models, and worked examples.Tue, 27 Oct 2026 00:00:00 GMTHow to Split a Large STL File for 3D Printinghttps://3dfiles.app/guides/split-large-stl-for-printing/https://3dfiles.app/guides/split-large-stl-for-printing/Split STL models that don't fit the build plate: shells vs planar cuts, dowels and keys, 0.1–0.3 mm tolerances, slicer cut tools, Blender, gluing, finishing.Tue, 27 Oct 2026 00:00:00 GMTSTEP vs STL: which file to send to a machine shop or print servicehttps://3dfiles.app/guides/step-vs-stl/https://3dfiles.app/guides/step-vs-stl/STEP vs STL explained: exact B-rep geometry vs triangle mesh, what CNC shops, injection moulders and 3D print services need, tolerances, file size, conversion.Tue, 27 Oct 2026 00:00:00 GMTSTL file size and triangle limits: slicers, print services and how to get under themhttps://3dfiles.app/guides/stl-file-size-limits-slicers/https://3dfiles.app/guides/stl-file-size-limits-slicers/Practical STL limits for Cura, PrusaSlicer, Bambu Studio, Chitubox, Lychee and print services, in MB and triangles, and how to shrink a file that exceeds them.Tue, 27 Oct 2026 00:00:00 GMTConverting STL meshes to STEP for CAD workhttps://3dfiles.app/guides/stl-to-step-for-cad/https://3dfiles.app/guides/stl-to-step-for-cad/How STL to STEP conversion works, what a faceted solid can do, how to prepare the mesh, and how to use it in SolidWorks, Fusion, Onshape and FreeCAD.Tue, 27 Oct 2026 00:00:00 GMTWhy your STL is tiny or huge in the slicer, and how to fix ithttps://3dfiles.app/guides/stl-units-and-scale/https://3dfiles.app/guides/stl-units-and-scale/STL files have no units, so models arrive 25.4 or 1000 times off. Learn to spot inches vs metres from dimensions, fix Y-up vs Z-up and rescale in any slicer.Tue, 27 Oct 2026 00:00:00 GMTSTL vs 3MF: what actually differs and which one to usehttps://3dfiles.app/guides/stl-vs-3mf/https://3dfiles.app/guides/stl-vs-3mf/STL vs 3MF compared: units, colour, multiple objects, file size, print settings and metadata, slicer support, how to convert between them and common pitfalls.Tue, 27 Oct 2026 00:00:00 GMTMaking USDZ files for iPhone AR Quick Look: scale, materials, file size, testinghttps://3dfiles.app/guides/usdz-ar-quick-look-guide/https://3dfiles.app/guides/usdz-ar-quick-look-guide/How to make a USDZ that works in AR Quick Look on iPhone: metre units, PBR materials, texture and file size limits, web embedding, testing, common errors.Tue, 27 Oct 2026 00:00:00 GMT