The press has been refined a bit, several mold designs built, and a few preliminary briquettes have been pressed. Overall, it's been a busy and successful week. Below you can see two molds and accompanying plungers.
Here are some briquettes laid out to dry. We experimented with a few parameters just to get to a reasonable size, shape, and consistency. We have a more rigorous experimental procedure developed, but were too excited to have the molds done not to produce a few.
While we were on a roll, we couldn't resist burning some. Two days in the sun left these briquettes were plenty dry to burn. The lit easily with newspaper and burned really well. The densest ones flamed for a bit, then glowed red-hot for a while, very similar to charcoal. Promising results!