The table below provides density figures for many common (and some not-so-common) substances. This information is useful for determining the weight (or volume) of objects and cargo. This table was pieced together from a wide variety of sources, listed in full at the bottom of the page. The inspiration for this comes from the old Dragon magazine article, "How Heavy is My Giant".
These figures have not been rigorously checked. Do not rely on this as a scientific reference!
Note on measures: Specific gravity is a measure of an object's density. A cubic centimeter of water at 4°C weighs 1 gram, and has a specific gravity of 1. The specific gravity numbers below can be read as "grams per cubic centimeter" (or kg/liter). A solid object with a specific gravity greater than 1 will sink in water. Weight in pounds per cubic inch and foot is also provided to save non-metric users some time on the calculator.
I may not have been posting on the blog but I haven’t been idle. I’ve just posted a revised map and version 1 of the new "Mythosa Cyclopedia". I’d like to say I’ve tweaked things slightly, but that would be a little inaccurate. But in my defense, that wasn’t my original intention! Below is a long rambling about how this new version came to be.
Though I’ve changed Mythosa quite a bit over the years (that’s actually part of the world lore now; the cycle of destruction and rebirth is a central part of a universal "monomyth"), the last incarnation was intended to be the last one. I was happy with the world, but my map looked too amateurish. So I started to look online for someone to hire to make a professional-looking map of Mythosa.
In the process I found an application called "Wonderdraft". I’d never heard of it before, but once I bought it and started using it, I was amazed. This was the mapping program I’d wanted for years, it just didn’t exist until now…
When it comes to dungeon maps, I favor utility over artistry. Maps with rendered furniture and torchlight shadows are nice, but if they’re only seen by the GM, they’re not very practical. I want maps that are clear and make layout with dungeon tiles easy. If they can convey additional information without being too busy, all the better.
Given the above, I really like this map of the venerable “Caves of Chaos” I found on The RPG Cartography blog. Not only is it practical but it contains a lot of useful information without being overdone. The only thing it’s really lacking is a square grid, though that might have clashed too much with the other elements (maybe tick marks on the outside of the walls could have been substituted...?).
I’m not sure how much use I’ll get out of this map, but it’ll definitely be a model for ones I make myself in the future.
(Note: The first link is to a JPG of the map, but the PDF you can download from the second link is much higher quality).