![whenever I try to make an advanced rocketry machine these x'es appear above the structure, online people say it's supposed to mean that there is an invalid block there, but the holo whenever I try to make an advanced rocketry machine these x'es appear above the structure, online people say it's supposed to mean that there is an invalid block there, but the holo](https://preview.redd.it/8o290cta0u791.png?width=640&crop=smart&auto=webp&s=fdb7e155667c7e5dd54adf3761c6ec550963d48c)
whenever I try to make an advanced rocketry machine these x'es appear above the structure, online people say it's supposed to mean that there is an invalid block there, but the holo
![Advanced Rocketry Tutorial Part 4 - Cutting Machine, Precision Assembling Machine & Rolling Machine by bongotezz Advanced Rocketry Tutorial Part 4 - Cutting Machine, Precision Assembling Machine & Rolling Machine by bongotezz](https://i.ytimg.com/vi/gAvqMR0tSy8/hqdefault.jpg)
Advanced Rocketry Tutorial Part 4 - Cutting Machine, Precision Assembling Machine & Rolling Machine by bongotezz
![Advanced Rocketry Tutorial Part 4 - Cutting Machine, Precision Assembling Machine & Rolling Machine - YouTube Advanced Rocketry Tutorial Part 4 - Cutting Machine, Precision Assembling Machine & Rolling Machine - YouTube](https://i.ytimg.com/vi/9-ZmHlEi0RM/hqdefault.jpg)
Advanced Rocketry Tutorial Part 4 - Cutting Machine, Precision Assembling Machine & Rolling Machine - YouTube
![Advanced Rocketry Tutorial Part 4 - Cutting Machine, Precision Assembling Machine & Rolling Machine - YouTube Advanced Rocketry Tutorial Part 4 - Cutting Machine, Precision Assembling Machine & Rolling Machine - YouTube](https://i.ytimg.com/vi/n8XUggWb7tQ/hqdefault.jpg?sqp=-oaymwEiCKgBEF5IWvKriqkDFQgBFQAAAAAYASUAAMhCPQCAokN4AQ==&rs=AOn4CLARDZ0iRuMBe_J1m2m_vdMrQ2gRXA)