 
                     
                The manufacturer of a flow meter required a cross bore with a defined back chamfer in their workpiece. The difficulty lies in gaining access to the bore's back edge.
| Workpiece | flow meter | 
| Bore diameter | Ø6.0 mm | 
| Chamfer | at the back bore edge: 0.25 mm x 45° | 
| Material | SU304 | 
| Volume | 3,000 bores per month | 
 
                For this application HEULE chose their VEX Combi Drill Tool (GH-QO-4002 with replaceable drill insert PS-C2-0600-1T), which is also equipped with a SNAP chamfering blade (GH-QM-30106).
| Tool | VEX | 
| Cutting speed | 1,500 rpm | 
| Working feed for chamfer | 120 mm/min | 
| Machine | vertical CNC machin | 
 
                The VEX Combi Drill Tool drills the bore and applies the required chamfer to the back of the bore in a single pass.