RE:solid STL, STEP, CAD Viewer

RE:solid 3D viewer opens engineering 3D models on Android. It reads mesh and CAD formats, computes geometry on device and saves your work to a file. No cloud, no sign-up, no internet. 📁 FORMATS • STL — binary and ASCII; edge smoothing: strong, medium or off • OBJ — with MTL, i.e. materials and colours • 3MF — part names and colours, including per-face • PLY — vertex colours, the 3D scanner format • STEP / STP, IGES / IGS, BREP — CAD solids [PRO] • ZIP — archive contents listed: open one model, or all as one assembly • RE:solid project — the model with the state of your work 🔄 CAD CONVERSION [PRO] STEP, IGES and BREP are read by the built-in OpenCascade kernel, locally: the file is never uploaded. An assembly arrives as a tree of named parts, not one solid piece. Saving to STL, OBJ or 3MF makes it a STEP → STL converter on the phone. Your first CAD file opens straight away, spending a trial session. 📏 MEASUREMENTS [PRO] • Distance between points with vertex snapping, along the normal, per axis (ΔX, ΔY, ΔZ) • Angle between faces, radius, diameter and centre of a circle from three points • Wall thickness with one tap on the surface • Measurement history, copy to clipboard; millimetres or inches 🌡 THICKNESS MAP [PRO] The whole part at once: red is thin, blue is thick. Two scales: a gradient, and a threshold that reddens anything below your number. The thinnest wall is given as a number and a callout on the model, visible through it. In an assembly each part is measured on its own. The map is stored in the project. ✂️ SECTION [PRO] A cutting plane along X, Y, Z or the view. The cut is capped and the plane stays visible; an open mesh gets no cap, and the app says so. ⚖️ WEIGHT AND COST [PRO] Volume, area and mass for 10 materials: PLA, PETG, ABS, PA12-CF, gold 14K/18K, silver 925, steel, copper, aluminium. Each material keeps its own price per gram. Hidden parts are excluded, so you can weigh a sub-assembly. On an open mesh the result is marked approximate. 🔩 EXPLODE AND ANIMATION [PRO] • Automatic explode in assembly order: what is covered comes off later • Manual tuning: arrows set a part's direction and travel, a group's number its place in the order • Move, rotate and scale a part — same handle, or type the numbers • Video (MP4 or WebM) with a set number of passes and turns, looping seamlessly • PNG frame capture, without the app interface 📦 PROJECT [PRO] The model and your work in one file: orientation, part colours, hidden parts, the section, the manual explode with its order, the thickness map, camera. A note and attachments (photos, PDFs) live there too. The original model is inside, so a project opens on another device without the source file. Prepared geometry comes too: a heavy STEP assembly opens in a fraction of a second. 🗂 FILES Models live in a folder in the app: subfolders, snapshots, search, format filter. Recent files. Opens from a file manager, messenger, mail or cloud. 👁 VIEWING Shaded and Rendered modes with materials (gold, silver, chrome, copper, glass, diamond), technical modes — wireframe, X-ray, ghosted [PRO], the parts list with file names, dimensions, splitting an STL into solids. The palette colours the whole model, even parts coloured in the file; ↺ restores them. ⭐ RE:SOLID PRO Free: viewing STL, OBJ, 3MF, PLY and ZIP, the library, view modes, materials, whole-model colour, part selection, the parts list, dimensions, STL splitting, smoothing. One-time purchase (no subscription) unlocks: STEP, IGES and BREP conversion; projects with notes; explode, move and scale of a part; animation and frame capture; section; measurements and the thickness map; weight and cost; technical modes; part colour and material; hiding and isolating parts; saving to STL, OBJ, 3MF. Three trial sessions: each unlocks every Pro tool until you close the app. Everything is computed on the device, models are never uploaded.