Thread: Quick change tool post, advice please

I am in the process of modifying some of the QC tool holders to lower the centre height by 4mm. They are as tough as old boots but I am nibling them down in the mill with a TC end mill on a fairly low speed, lots of coolant and 1mm cuts. A bloody pain but that is the only way. Roughing your centre block down on a big old blacksmith's grinder and then a light trueing cut may work, but still time consuming.