Arcs & Fillets

1. Select the arc tool

2. Before clicking anywhere, hold Ctrl and press '+' to increase the number of segments of the arc.

3. Done! This number of segments will be the new default for all arcs you draw, with that arc tool, during that Sketchup session.

Notes:

• Each arc tool (eg. 2-point arc, 3-point arc) will have to be set separately

• When you restart Sketchup, this will reset to the default of 12 segments

• Increasing the number of segments in arcs can make a model significantly heavier

1. Draw guides from each edge (eg. 300mm from each edge)

2. Draw arcs between guides

3. Optional: Delete guides (Edit > Delete Guides; this can be mapped to a shortcut)

1. Draw guides from each edge (eg. 300mm from each edge)

2. Draw 1 arc with desired fillet radius

3. Double-click all other corners to apply the same fillet radius to them

2D Fillet from the 2D Tools plugin lets you type in a fillet radius and produces arcs.

1. Download and install 2D Tools

2. Click 2D Fillet

3. Type in desired fillet radius

4. Select the edges to be filleted, one after the other

GIF from Rick O'Brien's tutorial video

Fredo6's RoundCorner plugin makes this really fast, but produces segmented curves, not arcs. This works only on 3D edges, not flat 2D shapes.

1. Download and install Fredo6's RoundCorner plugin

2. Select vertical edges to be filleted

3. Click RoundCorner

4. Type in desired fillet radius and number of curved segments in the toolbar provided. A preview is provided, so you can see if any fillets overlap with each other.

5. Click anywhere or press Enter to confirm