Youtuber Sean Aranda (The 3D Print General) has just released his 2019 edition of his book for diagnosing and repairing 3D printing issues. Seems like a pretty helpful book to have.And right now, the Kindle ebook is free (offer ends Friday 11/30/18).https://www.youtube.com/watch?v=CsbO-cFPlDYhttps://www.amazon.com/gp/product/B07KQCJVP7/ https://ift.tt/2SkaWrQ