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Learn/Drafting/Solid Modeling Tools

Fillet

Updated v2.5.6

At a glance

  • Apply a constant-radius fillet to any body edge
  • Tangent-chain selection: one click selects the full connected edge loop
  • Shift+Click to pick individual edges when you need selective control
  • Accumulate edges from multiple faces in one operation
  • Rounded surfaces display smooth highlights and clean outlines without changing model geometry

Fillet (F) rounds the edges of a solid body with a constant radius. Click an edge and the pick chains through every tangent-connected edge in the loop — one click rounds the whole perimeter of a face — while Shift+Click takes only the single edge under the cursor. Keep clicking to accumulate edges from as many faces as you like, set the Radius, and OK commits one feature covering all of them.

Selection

Chain-versus-single is decided while you hover, so the highlighted edges always show exactly what a click will add. That makes rounding a pocket a two-second job: hover the rim, watch the whole loop light up, click once. The Radius field accepts expressions and units like any dimension input, and the last value is remembered across sessions.

Curved-surface display

Fillets and other curved solids use smooth surface shading and refined display outlines. This includes rounded corners, spheres, revolved shapes, sweeps, lofts, modeled threads, and imported solids. New saved previews and glTF exports retain the improved appearance; older projects and mesh-only imports remain compatible. Feature history, dimensions, selections, and manufacturing geometry are unchanged.

Tips

  • Fillet is a normal history feature on the body — re-edit it later to change the radius and everything downstream rebuilds.
  • This is the 3D solid fillet. For rounding sketch corners before you extrude, use the Fillet sub-tool inside the Sketch environment instead.
  • For a bevel instead of a round, Chamfer uses the identical selection workflow.