thank you for your reply.
Lats time I printed my very delicate pieces (miniature, 0.6mm wire, 0.2~3mm holes involved ) in Wax. Unfortunately, they were broken when they arrived here.
So I am guessing if I order 3D printed wax to cast there and send me-- metal won't break during shipment.
Besides, I felt Wax comes out less details than Frosted Ultra details. Can you cast metals from Frosted Ultra details? Do you think this way is the best for tiny details came out in metal?