[gurps] Tinker's Starship?

[Onno Meyer]

> Don't you mean low volume not low mass? The ship has a stored mass of 
> raw material, making low mass objects is pointless as the total mass of 
> the ship will not change. Making low volume objects on the other hand 
> will increase the number of goods one has in inventory at planet fall.

I thought of low mass and didn't really consider volume. 

The ship takes off with a certain mass of raw materials and there is no way
to get more without landing/lighters/skimming. Probably the mass comes in
relatively high-density forms, from metal bars to plastic pellets. 

The manufactured products are probably a higher volume, but if nothing 
else works the ship can manufacture a cargo bubble. For most stardrive 
rules in GURPS, mass and not volume is the limiting factor.