Hi folks. Keep in mind that using small dimensions will produce small facets and that SU cannot fill a face which has a side smaller that 1 mm or about 0.04 inch. Since you are talking about a thickness of 100/1000 I presume that you are talking about 0.100 inch. If this is the case, the bending will produce segments that will be smaller than the limit and you may experience facets not filling. Do not despear. Draw everything larger than real size by a factor of 10 or even 100. The faces will close. When done, scale down accordingly. The faces will stay closed. Just ideas.