—heap Challenge; series based on building a working machine from junk

Let's find possible answers to "—heap Challenge; series based on building a working machine from junk" crossword clue. First of all, we will look for a few extra hints for this entry: —heap Challenge; series based on building a working machine from junk. Finally, we will solve this crossword puzzle clue and get the correct word. We have 1 possible solution for this clue in our database.