Valve Amp Top Plate Templates - where to find?

[CorradoBrit]

I'm going to start my first valve amp build, probably a get*set*go kit. Where can I source the top plate template so I can have these cut?

diytube.com :: View topic - Get Set Go 6B4G and Frugal Horns - August 2011

 

[tinitus]

I noticed some the other day
will try and remember where