In the last three weeks, progress on the Sentinel has amounted to an hour of cleaning up the soldered joint around the base of the body.
While there wasn't much solder, a neat right-angle here will make the model look a lot better, so I set to with scrapers and fibreglass pens to remove any excess metal. A bit of care is required to avoid scratching the brass, but that's mainly angling the metal scrapers sensibly. Then letting the fibreglass do it's job. I'm always amazed how effective this is at burnishing away everything but the brass.
If I ever get as far as priming the model, hopefully this effort will be worth it because you won't see anything!