Specialized Balsa Wood -- These are the tools I always use when building towers.
NEWISHTOOL Precision Hobby Knife Utility Exacto Knife Set with
Specialized Balsa Wood, LLC
NEWISHTOOL Precision Hobby Knife Utility Exacto Knife Set with
2400W Dual Mode Precision Plunge Router
Basswood -- Specialized Balsa Wood, LLC
Cutting Balsa Wood with the Cricut Knife Blade - Hey, Let's Make Stuff
Structures Testing Instrument 2.0 (W45332)
2400W Dual Mode Precision Plunge Router
Tools – Balsa USA
Tools-- Specialized Balsa Wood, LLC
Easy DIY: A Knife Sheath Made from Balsa Wood