modo thicken tool

be in polygon mode

1. Turn on Polygons mode button
2. select the polygons you want to thicken
3. select  tools menu -> polygon side menu -> thicken. Click on the selected polygon. This displays offset arrow pointer exactly perpendicular to the selected polygon.
4. I had to align work plane with thickening surface, otherwise the blue handle which has to thicken also scaling while thickening. Without aligning work plane, you can thicken the surface by changing action center to local or element or automatic. automatic option working unreliably for multi polygon scenario. local option is working well for multi polygon, but if the polygons connected angle is more than some degrees, then scaling grows those polygons disjointly creating gap between them. Element option worked well, even those disjointly grown polygons got connected with new polygons to keep them jointly. sometimes element behaving like local option. This might a bug in the software.
5. i had used action center -> selection option
6. adjust the offset values or drag the pointer. this thickens the polygon.

when modo's thicken tool used, the object file size has become very big around 130mb. When I used geomagic wrap to thicken the object, it occupied just 17mb.

I am using action center -> Automatic option. Didn't do any work  plane alignments. My purpose of thickening the item is to subtract another item from this item using boolean operation. Boolean operation is working well only when this item has huge thickness than the subtracted item. Otherwise boolean operation getting terminated in the middle.