Examples are Armour for armourer, Barter for barterer, Buckler for bucklerer, but also for buckle-maker, Callender for calenderer, one who calendered, i.
"The Romance of Names"
Ernest Weekley
Four pounds of this indigo to a gallon of water makes the requisite and universally used dye for garments, the better class of which are calendered by beating them with wooden hammers on stones.
"Southern Arabia"
Theodore Bent Mabel Bent
The cotton is plastered with indigo, even beyond the dye, and when calendered, as the clothes are when new, gleam purple and red.
"Southern Arabia"
Theodore Bent Mabel Bent