Combine

Combine merges multiple objects into a single unified solid. This is equivalent to a boolean union operation – it joins overlapping shapes into one continuous mesh.

How to Use

1. Select two or more objects that overlap
2. Click the Combine button in the toolbar, or find it under the Boolean operations menu
3. MatterCAD merges all selected objects into a single shape

The result is one solid object where all the individual shapes have been joined together. Any internal faces where objects overlapped are removed.

Tips

• Objects must overlap for Combine to produce a meaningful result. If objects don’t touch, they will still be joined into one mesh but remain visually separate
• Combine automatically handles Hole objects – any objects marked as holes are subtracted rather than added
• If the result looks incorrect, make sure all source objects are valid (watertight) meshes. Use Repair on imported models first
• Combine preserves per-face colors from the original objects

Related

• Subtract - Cut one shape out of another
• Intersect - Keep only overlapping volume
• Subtract and Replace - Subtract and keep both parts