Installing your STT swing-set. We have been installing and assembling swing sets for years in schools, playschools and homes. Our dedicated experienced assembly team will ensure prompt assembly time with the safety of your child in mind. In the time lapse video below you can see our assembly team hard at work, completing the play-set in under eight hours. You can see how much effort (and how many men) it takes to build the best play structure. And we know your child will love it. We thought the kids would collapse with excitement, eagerly waiting for it to be built!.