NO, NOT THAT KIND OF MOLD!
Anyways, we can assume that the majority of T̶o̶h̶u̶n̶g̶a̶ Bionicle part molds have been buried under concrete or something due to being considered "obsolete".
The only way to get more T̶o̶h̶u̶n̶g̶a̶ ̶p̶a̶r̶t̶s̶ old Bionicle parts is to buy them off the interwebs, at a thrift shop (if your lucky), or at a garage sale (if your lucky). How can you possibly assure your continued collection of 01 masks without the hassle of communicating with someone on Bricklink or forking over an unnecessarily large amount of money on Ebay?
If you've had any experiences with molding T̶o̶h̶u̶n̶g̶a̶ Bionicle pieces in the past comment in this topic.
What was the method you used?
Did any pieces break?
How about his one?