1) From Washington, DC/Route 495 (Beltway) and points east (2 possibilities):

First possibility: Take Route 7 west toward Leesburg. Before entering town, take the exit for Route 7/Winchester. (It's opposite a Ford dealer on the left.) Go 5 miles to the exit for Route 9/Charles Town, WVA. At the end of the exit ramp, take a left. Go approximately 200 yards to the 'T' intersection, then right on Business 7/Colonial Hwy. Go 0.5 miles to first left on Canby Road (Route 662). Go 0.7 miles to the lane on the left (#17642). The pottery is 0.5 miles down the lane. 

Second possibility: Take the Dulles Greenway toll road (267) west to the end. Take the left exit to Route 7 west. Go 4.5 miles to Route 9, left at the exit ramp, etc (see above).

2) From Maryland and points north:
Take Route 15 south to Leesburg. 15 becomes Route 7 west. Continue to exit for Route 9, etc....

3) From Warrenton, VA and points south:
Take Route 15 north to Route 7 west at Leesburg. Continue to exit for Route 9, etc....

4) From Winchester, VA and points west:
Take Route 15 east to the exit for Route 9. Go right at the exit ramp, then right to Business 7, left on Canby, etc....