Name: TopMod 3D
Author: John Briscella

Runs in your browser

Open TopMod

The demo builds shapes with the real tools. To model yourself, open TopMod.Open TopMod ↗

AI empowered by Claude · Gem Cut · Bejewel · Aero · FEA · hands · iPhone + iPad

New in v3.0

TopMod's core is Ergun Akleman's: the DLFL kernel and its insert and delete edge, extrusion, handle, crust, wireframe and remeshing tools. Version 3.0 keeps all of that and adds the tools below.

Try the new tools ↗

iPhone + iPad

TopMod 3D is on the App Store for iPhone and iPad, free: Ergun Akleman's TopMod and the new v3.0 tools, built for touch.

Download on theApp Store

AI empowered by ClaudeAsk Claude in plain words for a form, and Claude builds it step by step with TopMod's own primitives, modifiers and generators. Each step lands as a live, editable mod you can keep tweaking. Add your own Anthropic API key to use it.

Runs anywhereBrowser and iPhone and iPad, no install. Mouse, touch, and webcam hand tracking. Demo mode, a command bar, and a gumball to move, rotate and scale.

Layers + modifiersLayers, and a non-destructive modifier stack you can edit, reorder and bake.

New primitivesCuboctahedron, torus, cylinder, Möbius strip, spiral coil, polygon prism, and 3D text.

ModelingArray (rect, honeycomb, polar, sphere, Fibonacci), mirror, bridge, pinch extrude, greeble, offset shell, cut by plane, orient, heal, fill holes, flip, simplify, quad remesh.

GeneratorsMetaballs, gyroid, TPMS blocks, Schoen hybrid, Rössler attractor, cymatics, pseudospherical surfaces, woven tubes, chain mail, Voronoi, tree, GEM matrix, 2D and 3D mazes, breeze blocks, lattice cage morph.

DeformersTwist, bend, taper, bulge, spherify, and noise displacement, all non-destructive.

BooleansUnion, difference and intersect.

AnalysisMesh diagnose, curvature, section plane, interference, wall thickness, measure, overhang, edge lengths, seams, X-ray.

3D printingPrinter bed and build volume preview, tree supports, split, drill, voxelize, flatten.

FabricationPapercraft unfold with glue tabs, plywood layers with dowel registration, flat plywood faces, laser cut with finger joints, waffle egg-crate slicing, nest optimizer.

ExportOBJ, STL and STEP for 3D, DXF and PDF for cutting.

LooksGalaxy, Matrix, water, moonwater, carbon fiber, red carpet, flower, laser, patent halftone, 3D glasses, techno and gold display modes.

Hands

Model with your hands. Switch on ✋ Hands and TopMod reads your webcam with MediaPipe hand tracking, so pinch gestures drive the view. Tracking runs in the browser.

OrbitPinch with your right hand and drag.

ZoomPinch with both hands and pull them apart or together.

PanPinch with both hands and move them together.

Mockup · simulated handsRight pinch + drag · orbit

New tools in motion

BejewelGems on every faceSets a cut gem on every face of a host shape, table facing out, then shows it ray-traced in the Diamond view.

AeroWind tunnelStreamlines coloured by speed and surface pressure from a potential-flow solve with a wake model. Quick design feedback, not certified CFD.

FEAStress analysisFinite-element stress on a voxelized solid: von Mises colours and exaggerated deflection, with materials and loads. Approximate, for design feedback.

TopMod 3D on a folding phone · viewport top, tools bottom

TopMod Duo 4D

Open TopMod Duo 4D page ↗amaximal.com/topmodduo · concept

TopMod 3D inside Rhino 8 · live NURBS link

Top Rhino Mod 3D

TopMod 3D as a Rhino plug-in. The TopMod panel runs the same engine as the browser and iPhone app, right inside Rhino: everything you build lands in Rhino live as NURBS, and what you change in Rhino flows back.

Download for Rhino 8 (Mac)

Drag the .yak file onto Rhino, restart, and type TopMod. Free. Version 2.0.0.

Live in both directionsEach edit in TopMod appears in Rhino as one NURBS polysurface on the TopMod Live layer: one planar face per polygon, n-gons kept. Move, scale, rotate, gumball or point-edit it in Rhino and TopMod updates to match.

BakeFreeze a copy on the TopMod Baked layer as NURBS or as a mesh. Baked objects stop following TopMod.

ImportSend selected Rhino meshes, polysurfaces, surfaces or SubDs into TopMod as a new layer, in place.

Camera followsOrbit in TopMod and Rhino's Perspective view follows.

Units and axesTopMod's Y-up inch space maps to Rhino's Z-up document units automatically.

WorkspaceThe panel docks on the right at half width next to one shaded Perspective view; Layout and Default switch back to Rhino's four views. TopModWindow opens it floating.

CommandsTopMod, TopModWindow, TopModBake, TopModImport, TopModWorkspace, TopModDefaultLayout.

Runs offlineTopMod is compiled into the plug-in and talks to Rhino in-process. No server, browser or network.

TopMod → Rhino

Preview · TopMod's engine driving a recreated Rhino viewportOpen the live preview ↗

TopMod by Ergun Akleman · source + downloads

Credits + files

TopMod was created by Dr. Ergun Akleman and his students at Texas A&M University: the topological mesh modeling method, the DLFL kernel and the original application.

TopMod 3D v3.0 is John Briscella's (AMAXiMAL) reformatting of TopMod for the browser and iPhone and iPad, in collaboration with Ergun Akleman, with the new tools listed under New in v3.

Ergun Akleman, creator of TopModpeople.tamu.edu/~ergun ↗

TopMod v2 sourcegithub.com/TopModLab/TopMod ↗

TopMod v2.5 for WindowsTopMod2.5.zip ↗

TopMod research + downloadsTopological mesh modeling ↗

TopMod 3D v3.9 sourcegithub.com/AMAXIMAL/topmod3d ↗

Project files

GitHub repository ↗Source, issues and version history Download v3.9 (.zip)The whole app as one HTML file. Unzip and open it in any browser; works offline. Run it now ↗amaximal.com/software/topmod

Questions, bugs, ideas

Comments

AMAXiMALPinned

Hi everyone, please leave feedback, report issues and bugs, propose solutions and new tools, and anything else you'd like to see in TopMod 3D. An agent reads every comment and works on them as soon as possible.

TopMod 3Dv3.0