I made a BT30/ER11 drag engraving tool holder last week




Ingredients List -
A BT30 10mm Endmill Holder
An ER11 chuck on 10mm shank turned to length and with a slot milled in the side for combined retention, rotation prevention and travel limit by the BT30 Endmill Holder's grub screw (screw adjusted to just allow vertical float)
One spring
A diamond drag engraving cutter from my Gravograph IM3 pantograph machine
A dash of low strength Locktite for the Endmill Holder retaining screw.
A drop of Way Oil on the ER11 collet chuck's 10mm shank