An arch is a common structural element that is easily built using solid modeling tools.
A basic arch requires three parts to assemble.
Insert a Block part and scale it up to approximately the size of a door frame.
Insert a Cylinder part and scale/rotate it to intersect the center of the block. Make sure this cylinder extends completely through the block.If the cylinder is blocked from moving through and intersecting the block, make sure that the Collisions checkbox is off.
Insert another Block part and place it beneath the cylinder. It should be the same width as the cylinder and its top surface should line up with the vertical center of the cylinder.
Negate Hollow Regions
To “remove” regions that should be hollow, you’ll need to designate the negate parts and then union all pieces together.
Select both the cylinder and the smaller block.
From the Model tab, click the Negate button. This will turn the parts translucent and red.
Union All Parts
To complete the arch, finalize the colors and materials of the arch and then Union all three parts together.
Select all three parts.
From the Model tab, click the Union button. This will “remove” the two negated parts, leaving an open path for players to walk through the arch.
The arch is complete! As a unioned model, it becomes one single object in the workspace, versus a grouped model of multiple parts:
Previous Page Getting Started