SMELTS is a playable word

smelt Scrabble® Dictionary

verb
smelted, smelting, smelts
to melt or fuse, as ores
34 Playable Words can be made from "SMELTS"
   2-Letter Words (6 found)
   3-Letter Words (12 found)
   4-Letter Words (12 found)
   5-Letter Words (3 found)
   6-Letter Words (1 found)