Carpenter and woodworker Carl Bilderback never flattens his oilstones. And they are both dead flat – I couldn’t get a .00125” feeler gauge under a straightedge that I laid on the stones.
His stones aren’t magic. He simply knows how to dance.
The trick to keeping your stones flat is in how you hold the tool and how you work the stone. As we were getting ready for our Lie-Nielsen Hand Tool Event this morning, Carl showed me how he’s kept his stones flat for 25 years and I shot the above video.
— Christopher Schwarz