In this, my first instructible, I detail how I (with assistance) created a variation on a prop from the BBC show Torchwood. The prop in question is the "Vortex Manipulator" found on the wrist of Captain Jack Harkness. Below is a screenshot from the show of the item we are trying to replicate with some small changes. My intent with this instructible is to show how I went through the data collection, model manipulation, replica testing, mold making and pewter (yes, molten metal!) melting, pouring, and finish work.
Step 1: Getting the details
The first step involves gathering as many details about the item as possible. Through screenshots of the actual show as well as a Google image search we were able to find quite a few good images that give details on the actual device under the leather strapping. I saw that there are plenty of people out there making this replica and the majority of them appear to be plastic or resin copies. In order to be a little different I decided that a pewter metal cast would be the ideal way to stand out from these other copies. This step is rather uninteresting but crucial to the process.