Fillet (source code)
= Fillet
{wiki=Fillet_(mechanics)}
A <fillet> rounds a corner or edge by inserting a tangent transition. In a planar circular construction, intersect <normal lines> through the prescribed tangent <points> to find the <circle> centre. Choosing the retained side and local clipping region is part of the design: intersecting the entire original solid with the fillet disk generally removes unrelated geometry. Tangent joining need not make <curvature> continuous.
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