The Tack tool allows you to quickly move and rotate a polygon and/or all connected vertices to any other polygon in the model. To use the tool, simply choose a single polygon in the mesh you wish to move and re-align. With the tool active, click on another polygon in your project. The initial mesh moves and rotates so that the selected polygon is aligned to the polygon that you clicked on.
The following Transform options are available for adjusting the Tack tool:
• Center - this XYZ triplet is automatically set with each click of the tool. The value represents the 3D coordinates of the element clicked on. After the value has been set automatically, it's possible to edit the values directly, to move the mesh on any of the three axes.
• Align - with this option active, the mesh is moved and rotated to align to the surface normal of the target element. Disabling this option results in the mesh only moving to the target element.
• Rotate - this XYZ triplet is automatically set with each click of the tool, but only when the Align option is active. After the value has been set automatically, it can be manually edited to offset the rotation from the element normal.
• Offset - use this value to determine an offset distance perpendicular to the surface geometry it's tacked on to.
• Size - use this value to scale the tacked geometry.
• Move connected vertices - by default, this option is active so that the selected polygon and all connected vertices are moved and aligned to the target element. When this option is disabled, only the selected polygon is transformed.
• Move to Closest Element - snaps the geometry centered onto the closest component element - polygon, edge, or vertex.
• Copy Geometry - duplicates the geometry when tacking, instead of simply moving the original. Simultaneously holding down Shift when clicking makes a copy per mouse click.
• Make Bridge - when this setting is enabled, Modo attempts a Bridge operation between the selected polygon and the polygon you've clicked on which to tack the object, making a single connected mesh from the two surfaces.