Hey guys. Since summer is coming around soon I'm gonna start planning a 2x12 guitar cab build. My question is: What size plywood sheet(s) should I get for a clone of a Mesa Boogie 2x12 Rectifier Cabinet?
I'm hopefully looking to make finger joints.

Also another quick question: Anyone know any good places to get tolex in the UK? Preferably online of course.

Main Rig
Korg Pitchblack > Digitech Bad Monkey
Peavey 6505+ 112 w/ 2x12 (Celestion Vintage 30 and WGS Veteran 30)
[Effects Loop] Boss GE-7 > Boss CE-5 > TC Electronic Flashback
3/4" voidless birch ply

Mesa uses 3/4" voidless marine grade Birch ply, but regular ply is just fine
2002 PRS CE22
2013 G&L ASAT Deluxe
2009 Epiphone G-400 (SH-4)
Marshall JCM2000 DSL100
Krank 1980 Jr 20watt
Krank Rev 4x12 (eminence V12)
GFS Greenie/Digitech Bad Monkey
Morley Bad Horsie 2
MXR Smart Gate