The word sandblaster is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 17
Highest Scoring Words With Friends™ Play In The Letters sandblaster
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Seven Letter Word Alert: (58 words)
abasers, abaters, ablated, ablates, abrades, abrased, abrases, abreast, absents, adrenal, antlers, arblast, arsenal, artless, atlases, badness, baldest, banaler, bandlet, banters, bartend, basalts, basters, bedlars, blander, blasted, blaster, braless, brassed, breasts, datable, dentals, desalts, enlards, landers, nabales, reblast, rentals, resands, reslant, saltern, sandals, sandbar, sanders, sealant, searats, seastar, slander, slanted, slaters, snarled, stabled, stabler, stables, stander, sternal, strands, tarsals