Thirty mm hinge sinker bit The hinge sinker little bit is surely an example of a custom made drill bit structure for a certain application. Quite a few European kitchen cupboards are made out of particle board or medium-density fiberboard (MDF) having a laminated melamine resin veneer. Very best for: https://drillbitmanufacturer82716.mybjjblog.com/drill-bit-manufacturer-fundamentals-explained-46956036