I’ve been using this putty now for 2 weeks and I love it. It is easy to load in the pens (I do it just like the wax - flatten out alittle putty and push my pen down into it… give a little twist and pull up!) It lasts a long time before you need to reload the putty. It picks up the drills perfectly and even the AB drills! Incredible. I keep the putty I’m working with in the same little Heart Shaped DAC Wax container. (Just to keep it as clean as possible) You must try this putty, it is perfect!