▁as ▁used ▁in ▁rings aws , ▁are ▁mostly ▁used ▁in ▁the ▁working ▁of ▁art ▁glass . ▁They ▁use ▁a ▁steel ▁band ▁or ▁ring , ▁co ated ▁with ▁a ▁diam ond ▁ab ras ive , ▁attached ▁by ▁nick el ▁electro pl ating . ▁A bras ive ▁saw s ▁are ▁used ▁for ▁a ▁range ▁of ▁hard , ▁brit t le ▁materials , ▁such ▁as ▁in ▁min eral ogy . ▁Cer am ic ▁t iles ▁may ▁also ▁be ▁sa wn . ▁▁ ▁The ▁main ▁form ▁of ▁ring ▁saw ▁uses ▁a ▁ring ▁or ▁wire ▁that ▁is ▁like ▁a ▁flat ▁disk . ▁The ▁non - cut ting ▁side ▁of ▁the ▁bla de ▁is ▁behind ▁of ▁the ▁cutting ▁edge , ▁so ▁limits ▁the ▁depth ▁of ▁the ▁cut s ▁that ▁may ▁be ▁made . ▁W ire - s aws ▁are ▁co ated ▁with ▁an ▁ab ras ive ▁on ▁all ▁sides ▁and ▁so ▁may ▁cut ▁in ▁any ▁direction . ▁With ▁the ▁ring ▁behind ▁the ▁cutting ▁edge , ▁cut s ▁in ▁the ▁main ▁direction ▁will ▁treat ▁the ▁bla de ▁( in ▁mechanical ▁terms ) ▁as ▁an ▁arch , ▁which ▁is ▁st iffer ▁than ▁a ▁side ways ▁force ▁on ▁a ▁cyl ind rical ▁bla de . ▁This ▁geometry ▁also ▁gives ▁a ▁vertical ▁cut ▁in ▁thick ▁materials , ▁although ▁the ▁cut ▁must ▁be ▁kept ▁straight ▁and ▁unlike ▁a ▁bands aw , ▁curves ▁cannot ▁be ▁sa wn ▁if ▁the ▁material ▁is ▁thick . ▁They ▁may ▁be ▁used ▁for ▁min eral ogy ▁and ▁sl abb ing . ▁ ▁Many ▁mak ers ▁of ▁rings aws ▁offer ▁a