Amazon.com : 2 PCS Scorch Pen Marker Wood Burning Pen - Winllyat Chemical Wood Burned Marker Pen for DIY Projects - Oblique Head and Round Head (Oblique Head and Round Head) :
ArtSkills Project Craft Electric Handheld Woodburning Tool Pen with 5 Tips for Wood Crafts and Signs PA-7202 - The Home Depot