How to use OAIEGSD_Glass Cutter, Glass Cutting, cut curve lines

OAIEGSD Glass Cutter, Premium Glass Cutter Tool 2mm-20mm, Pencil Style Oil Feed Carbide Tip, Glass Cutting Tool for Glass Cutting/Mirror/Stained Glass with 2 Extra Heads and a Screwdriver 【EASY & SMOOTH】The high-quality carbide tip makes the cutting process smoother, You can complete the cutting easily like cutting a butter. The cutting life of this cutting head exceeds 20,000 meters , nickel plated cutter head can prevent oxidation. 【NO CUTTING TROUBLES】Are you still worried about the thickness of the cutting material? Don't worry, 3 pieces of cutting heads with different sizes in our package, the cutting range is 2mm-20mm, This glass cutter for glass cutting/mirror/stained glass and DIY items. 【EASE OF USE】This glass cutter tool is Pencil style designed, 360 degrees rotatable cutting head with internal oil reservoir. when pressure is applied, an automatic oil dispensing system keeps the cutting wheel lubricated every time you cut, great for you to cut clean lines and curves. 【COMFORTABLE HANDLE】Ergonomically Designed Non-slip Handle for comfortable use. it can be used easily and comfortably and can fit into any pouch or pocket. 【YOU WILL GET】The glass cutter tool includes a black metal glass cutter, a 2mm-6mm cutter head, a 12mm-20mm cutter head, a screwdriver and a dropper. Every product has been tested strictly to ensure higher quality, if you are not completely satisfied with it, we will give you a full refund. ---------------------------------------------------------------------------------------------------------------------- 【Facebook Page】 Follow our facebook Fanpage to receive our latest Promotions http://bit.ly/2sYggdD 【Facebook Group】 Join in our Facebook Group to get DIY&Craft Ideas http://bit.ly/37SmnPl 【Contact US】 Contact US via Messenger: https://m.me/Itrksupply