THANKS FOR FAST REPLY-THIS IS A MODEL BUILT YEARS AGO FOR WORLD MASTERS BUT NOT QUITE FINISHED.SO ALL CONSTRUCTION DONE FOR D/F.I HAVE PURCHASED ALL NEW UP GRADES FROM BVM I.E RETRACTS TURBINE BY- PASS,LOOKS LIKE THE DREMEL WILL BE DOING OVER TIME.THINKING OF USING MY GRAUPNER DISTRIBUTED P-60-WHAT DO YOU THINK.