If I have cut a pice of wood just a TAD short, is it OK to use baking soda and CA to fit them together.. BTW the piceces of wood touch a little bit but I am just teying to fill the gap..

what kind of wood is it, and where on the aircraft will this glue be glued?

You can use baking soda and CA to fill a gap, however you will need 60 grit sandpaper to sand it smoothe. You will also want to watch your eyes and lungs as the CA will emit a nasty smoke on contact with the CA. A couple of other options would be to fill the seam with putty or glue some left over scrap wood in the joint with carpenters glue. Good Luck, Dave

If it is something critical like a wing spar then no way. If it's just sheeting or something then filling is no big deal. The CA will be tough to sand though and might be visible through covering. If it is a non-load bearing part you can mix some balsa dust from sanding with wood glue such as Tite-Bond to make your own filler or use a commercial wood filler. These will sand much easier.

This is on the horizontal stab support brace.. Not a huge load bearing area but I want to make sure it will be OK

Well I am going to be the negative voice here. Any gap you fill like this is going to be a weak spot. The strongest joint you can ever make is wood to wood contact. When you start filling gaps like this you start biulding weakness into the airframe. If it were my build I would scrap the piece and cut a new part that will fit tightly.

Ken

Another option is to back the weak joint with another piece of wood. I've done this on repairs, I generally use epoxy and hardwood for it.