Bath scored eight second-half tries as they overwhelmed Italian side Calvisano in the Amlin Challenge Cup at The Rec.
The home side were only 15-8 up at the break after they responded to Luigi Ferraro's early score with tries from Nick Koster and Dominic Day.
But then came a glut of five in 16 minutes from Horacio Agulla (2), Josh Ovens, Mark McMillan and Guy Mercer.
And they added three more through a penalty try, Dave Attwood and replacement Kane Palma-Newport.
New Scotland fly-half Tom Heathcote landed seven of the 10 conversions and a penalty for a 17-point individual haul.
There were tries for all three members of the back row, open-side flanker Mercer, who was captaining Bath for the first time, debutant Nick Koster and academy graduate Ovens.
Bath: Cuthbert; Eastmond, Agulla, Vesty, Woodburn; Heathcote, McMillan; Beech, Sharman, Wilson; Day, Caldwell; Ovens, Mercer (capt), Koster.
Replacements: Palma-Newport for Beech (59), Devoto for Cuthbert (69), Perenise for Wilson (70), Williams for Vesty (71).
Not Used: Dunn, Attwood, Skuse, Claassens.
Calvisano: Berne; Canavosio, Vilk, Castello, De Jager; Griffen, Palazzani; Lovotti, Ferraro, Costanzo, Erasmus, Hehea, Brancoli, Scanferla, Vunisa.
Replacements: Visentin for De Jager (56), Picone for Griffen (63), Violi for Costanzo (64), Gavazzi for Ferraro (66), Bergamo for Canavosio (71), Cicchinelli for Brancoli (71), Beccaris for Hehea (74).
Not Used: Scarsini.
Referee: Cedric Marchat (France).