Finally we have the answer to create an optimal C-Curve in a gel nail - The Nail Perfect Gel Clamp. The Gel Clamp may be used to create a C-Curve on a gel nail created on a form as well as on natural nail overlays and tips. Once you have applied your first layer of gel, cure for approximately 15 – 30 seconds in a UV light. Remove nail from the UV light and place the clamp securely over the nail, from the middle of the natural nail along the entire length of the extension. The clamp must be placed at exactly the same point on each side of the nail to ensure equal pressure which will create a perfect C-Curve. Place the finger back into the UV light and complete the cure time.