Let me start off by saying I am a complete and total newb when it comes to wood work, so any advise is super helpful.
Okay, so I purchased a swing set that you assemble yourself. I started to put it together and I'm already stuck on like the fourth step. The instructions had me put together two sides of a structure, and now I have to put the two structures together. The beams connecting to the two sides are near impossible to square. I'm assembling this on grass ... as I don't have much else to do it on. Whenever I get one side square the other side isn't square, and so on. The ground is hella-unlevel, so I'm not surprised I'm having issues.
Does anyone have any tips or recommendations on how I can make the structure square? I have a square tool but all I know to do with it is check if something is square.
I was thinking maybe I could purchase some L brackets that are guaranteed to be a 90° angle, and use that to attach the beams to the structure at the proper height. But they are expensive and I don't want to end up buying them only to have them not be the best idea. Though, looking at the instructions right now, I don't think there would be anyway to make that work given that there's no inside joint to bind to.
I've attached a photo of the step I'm stuck on and highlighted the beams that aren't square with a green arrow.
I really want to get this thing done for my son, so any help is really really appreciated.