Homebrew PCBs

What a difference a printer makes.  I've been doing a few boards and 
learning the process, was getting fairly good results but needed to 
do more touchup with a pen that I thought I should have to.  After a 
half a dozen boards and trial and error with a couple of papers, I 
suspected my laser (hp 2100) wasn't putting down enough toner, so I 
switched to a different machine.  Right away I could tell by looking 
much, much, much more toner.  My first board with it is in a final 
soak right now (99% of the paper removed), but I can already tell it 
works a ton better.  Just using a $10 iron from the Dollar store.  
The only thing I have to watch using a hand iron is around the 
edges.  I suspect that is because of heat transfer issues.