Re: #7 vs. #8 planes?
Dean J in MN
>
What are the advantages/disadvantages to choosing a 7 or 8 for a planer? If you had to choose, which one, and why?
David --
I think you have to tell us what you want to use this #7/#8 for to get a better response... For example, do you do stock prep by hand? Or is this planes job cleaning up edges?
If you are going to use it as a jointer, then I would go with the longest/widest plane.
If you are going to use it as a try, then you may want to consider its weight. Some folks like the extra mass of the #8, but for face jointing (here the plane is set up as a try plane) the extra mass and power needed to push that wider blade may just wear you out. A #7 is long enough for most try plane work. A #6 is a nice try plane as well. Or just pick up a woodie... Oh wait, I'll refocus...
On the other hand, for working edges (here the plane is set up as jointer), I'd take the wider of the two. You can match plane thicker boards that way. You don't spend as much pushing the plane around in this operation, so the extra mass isn't going to wear you out. As an added bonus, the wider of these two planes is also longer! A plus for edge jointing.
My 2 cents...
-Dean