Very cute, a fun puzzle concept. It is irritating to walk back to the rebuilding device every time, but I could see a more streamlined version of this system being very fun indeed. It could be a novel and modular approach to metroidvania style progression with more resource based problem-solving than the standard lock & key design of "this is high up so you need to get the one double jump powerup". I do hope this gets developed further, it could become great!