I started by running to my local hobby and craft store to buy a supply of brass tube and rod stock. I also swung by the hardware store for some tiny steel hex nuts - you'll see why later.
Next, I began sanding a rectangular opening to the two halves of the ship's hull. My planned mounting hardware is wider than the empty space in the middle, and dove-tailing it with the resin should make it much stronger in the long run.
- I hammered a short length of 1/8" round brass tubing into the square base to line and narrow the hole for the support post.
- I cut a length of 3/16" brass rod for the post and inserted it into the now brass-lined hole in the base.
- I cut a section of 1/8" square brass tube to the length of the larger square tube glued to the miniature.
- Finally, I glued the 3/16" support post into one end of the 1/8" square tube. The two are a nearly perfect fit, producing a base which looks like this:
The 1/8" square tube is a very close fit inside the 5/32" tube attached to the ship, allowing the two to mate tightly and produce a solid base for the model. As a final touch, I glued a tiny rare earth magnet to the top of the support post so that it could grip the steel hex nuts and prevent the base from falling off during play. (See? I told you the nuts would be important eventually)
The next step is even more fine tuning, putty and sanding to get everything ready for paint.