When I was building mine, people suggested lighting it. One factor in deciding not to do that was the time and complication involved, but another was the fact that it doesn't take much material to weigh more than 10% more than tape.
I used a fair bit of permanent ink, but I think I'm safely below the 10% mark...
__________________
_________________
|...............| We live in the nick of times.
| Len 17, Wid 3 |
|_______________| [pics]
|