I have a female port (slightly larger than a USB port) from an old obsolete device. I would like to use the female port I currently have to make a mold for the male version. I have some ideas for adding the metal contacts to make it functional.
My current strategy is to use a product such as Oomoo 35 to make a silicon mold of the female port. This first mold will contain the shape of the male part I want (but will be too soft to use on its own). I will cut away any part of the mold that I don't need and use what is left to create a second mold, where I can then cast the actual male part in a hard material or resin as many times as needed.
I've never created a silicon mold before so I'm curious if that is a reasonable approach for what I'm trying to achieve. Can I use Oomoo/silicon again for the second mold or do I need to use a different material?
Is there any particular name for what I'm trying to achieve? I've been searching for strategies to this problem but I must not be using the correct query.