Advanced Filleting on Rhino Wiki

There are situations where the automatic filleting tools in Rhino may fail. This page contains tutorials that show how to manually get the desired results.

FilletEdge

• Creates a tangent surface between multiple polysurface edges (joined) with optional varying radius values, trims the original faces, and joins the resulting surfaces together.
• Is not limited to just two surfaces
• Can fill in corners between adjacent fillets
• Is limited to exactly three surfaces meeting at a point
• The radiuses used can not be so large that they overlap each other and completely consume any surface they are following.

FilletSrf

• Creates a tangent surface between two surface edges (joined or not) with a constant radius, and optionally trims and/or extends the original surfaces.
  
• Works on exactly two surfaces at a time
• Does not fill in corners between adjacent fillets

What if they do not work?

Four Surfaces
	This example will show you how to manually fillet a corner where 4 planar surfaces meet at a single point.

Five Surfaces
	This example will show you how to manually fillet a corner where 5 planar surfaces meet at a single point.

Overlapping surfaces
		This example will show you how to manually fix two overlapping fillet surfaces.

Short walled pocket
		This example will show you how to manually fillet a pocket with the walls are too short for the desired radius.

Existing small radius
		This example will show you how to use a large radius fillet when a small radius fillet already exists.

Tangent Cylinders
	This example will show you how to fillet two stacked cylinders that share a tangent side.

Overlapping boxes
	This example will show you how to fillet the shared edges of two overlapping boxes.