class Washer : Model {

    @Custom
    var outerDiameter = 10.0

    @Custom
    var innerDiameter = 6.0

    @Custom
    var thickness = 1.0

    @Slice( perimeters=100 )
    override fun build() : Shape3d {
        val profile = Circle( outerDiameter/2 ) - Circle( innerDiameter / 2 )
    
        return profile.extrude( thickness )
    }

}