http://www.customink.com/cink/r.jsp?C=4  (T-Shirt)
http://www.myvirtualmodel.com/en/index.htm  (Virtual Model)
http://www.scion.com/  (from Toyota customize your car) 
http://www.boconcept.us/Decorate_with_Furnish®-10648.aspx
(need to download the 20 MB software) , how easy it becomes to design your room) 

If you click on above mentioned sites you will see that there is
concept of customizing according to customers need, whether a T-shirt,
car, or for apparels.
I really liked the software on Bo Concept website; if you download it
you?ll see how easy and fascinating it is to design a room with
furniture.

I am looking for some similar websites that gives either an individual
customer or business customer to the option to design handicrafts
(customizable texture, material shape) or metal product (option to
customize design, alloy)
 
In short, a website that gives you an option to customize a metal or
similar product, customizing can be related to design, color, alloy,
weight etc (One should have some option to choose between products)
 
Certain keyword used to find above sites: virtual, customize etc.

Any body who know about exporting brass and metal product should
really benefit from it

PS. I plan to raise the price if someone has good answer to it.

Thank you.

>> PS. I plan to raise the price if someone has good answer to it.

You'll be much more likely to get a good answer if you raise the price
first. Your current price will put $2.25 in the pocket of the
Researcher who posts an answer. While this might be fine for a
question that has an easy, quick answer, your question is likely to
take time to research.

okay, I'll increase the price but you or any else who is answering the
question should give me a specific site that has a feature to
customize metals and handicraft products.
if you do find let me know ..I'll increase the price.

Thank you.