uncle ariel ginagamit ko yan for 4-6 weeks (the whole piece). then dagdag ng bago... pero nag-iiwan ako ng mga lumang rings from the previous at binabahayan din sila ng bacteria.
hindi naman sya nadudurog kasi matibay naman yung resin na nagba-bind sa ac... but still, you have to be gentle on the cutting. bale magiging ganito itsura nung ring:
i do the cutting using a hacksaw.