Something helful I just spotted in nolimits...
I was making some supports for this coaster, and they were getting a bit small and fiddly and the "snap grid" was being irritating. I tried to solve the problem and found this in Options>Preferences...
If you make the number on the "move snap" smaller, the snap grid will become easier to use!
Its just a simple little thing, and I'm sure alot of you know about this but I thought it would be good if I just put this up here for those who didn't know about the nolimits snap grid thingie.