Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.
Does using the right size hex key (Allen key) to speed up the disassembly process cause damage to the LEGO Technic pieces?
A hex key, being tough metal, is inherently a danger to ABS plastic. Using it to push axles and pop connections will eventually scratch and wear down your parts, something you don't want with technic pieces.
Required, but never shown