Mapal has addressed this problem in its latest QTD products by using laser sintering – a form of 3D printing – in the production of the drills. This allows a non-circular profile to be used for the cooling ducts, which increases coolant flow by up to 100%, compared to conventional drills that have a central cooling duct with diversions.
The drills are available in diameters from 9 to 12 mm and are usually available from stock for immediate delivery.Mapal expands QTD range with indexable insert drills
Mapal UK has added laser-sintered indexable insert drills with diameters as small as 9 mm to its QTD range. Drills of this type have previously been available in larger diameters, but until now it has been impossible to provide an adequately sized coolant channel in drills with diameters smaller than 13 mm, without unduly weakening the drill core.
