For anyone that learns more effectively from being shown how on a video (as opposed to reading a webpage), this presentation is by the guy who invented the Volkswitch 3D printed keyguard designer.
He shows you exactly how to DIY your own.
Some level of technical proficiency and awareness of 3d printing processes needed so it may be easier for some to just buy ready made options from Etsy/KeyguardAT /CommunicateAT though.
