Fillet Guide

Design 3D-printable parts on iPad and Mac. Sketch, add features, change anything later.

Your first part

Five steps from an empty bed to a file your printer understands.

Design with AI agents

Ask for a part. Watch it appear.

Connect Claude Code or another MCP client and describe what you need. The agent sketches, extrudes and fillets in your open design. Every step lands on your timeline, and you can edit or undo it like your own.

Connect an agent

Get Started

Install FilletDownload the Mac app and open it the first time, or build it for your iPad.Getting started with FilletFind your way around the editor and make your first part.Files, iCloud and importing STEPWhere designs live, how they save, and how to bring in STEP files.

Sketch & Model

Sketch a profileDraw profiles with Apple Pencil, snap to geometry and type exact sizes.Extrude, revolve and Press PullTurn a sketch into a solid, cut pockets and push faces.Round, bevel and hollow: Fillet, Chamfer and ShellRound edges, bevel corners and hollow out a part.Drill holes for screwsClearance, counterbore, countersink and insert holes from M2 to M6.Work with bodies: primitives, combine, move and mirrorAdd primitives, combine bodies, and move or mirror them.Repeat with patternsRepeat bodies or features in a row or around an axis.

Select & Change

Select edges, faces and bodiesPick exactly the edges, faces and bodies you need.Use parameters and expressionsName your sizes and change the whole design from one place.Change your design with the timelineEdit, reorder, suppress or roll back any step.

Inspect & Print

MeasureRead lengths, areas, distances and angles off the model.See inside with Section viewCut through a part to check its walls, holes and pockets.Check a part and export it for printingPick a printer, check the part and send it to your slicer.

Discover More

Keyboard shortcutsEvery shortcut for iPad with a keyboard, and for the Mac.Expression referenceEvery operator, unit and function a number field takes, and what each red message means.