As nouns the difference between stalder and scalder
is that stalder is (uk|dialect) a wooden frame to set casks on while scalder is a heated tub for softening the skin of slaughtered pigs, poultry, etc or scalder can be an ancient nordic poet; a skald.
scalder
English
Etymology 1
Noun
(
en noun)
A heated tub for softening the skin of slaughtered pigs, poultry, etc.
Etymology 2
Noun
(
en noun)
An ancient Nordic poet; a skald.