Basic Usage

Video Demo

Select a Mesh object in Object Mode

Notice that the object is highlighted in orange

Run Polytrim from the Spacebar Menu

Leftclick to add cut points.

Left click on the model to add in nodes of the cut line.

Left-click the last node to close the loop

Slice/Trim/Carve across a mesh

1. The cut must start on a non manifold edge (green dot will appear with hover)
2. The cut must end on anon manifold edge (green dot will appear with hover)
3. Better to MOVE endpoints than delete them (it sometimes causes errors)

Cut within mesh surface (hole)

1. The cut most start within the mesh (A slice can not be converted to a hole)
2. The cut must be a closed loop (left click on last point)
3. Once the loop is closed, it can not be "opened"

Press 'C' to preview the cut (mandatory step)

1. Press 'C,' the cut will turn green, might turn red if some segments have failures

Press 'S' then 'Left-click' to place a seed point.

This defines which side of the cut line the following actions will affect. The addon will also do some pre-calculation at this step so it may take a few seconds.

The final step offers several options for how the cut is completed. These shortcuts attempt to match the default Blender keymaps for mesh operations.

• 'Shift + D' - Duplicates the region, leaving original mesh in tact

• 'X' - Deletes the region, altering the original mesh and leaving a hole

• 'P' - Separates the region into a new obeject, leaving a hole in original mesh

• 'Y' - Splits the region, altering the mesh, but leaves it as part of the original object

• 'K' - Cuts the region, adding geometry into the original mesh, like the regular blender knife tool