We use the Nail Board seam on larger surfaces. Sometimes it is not practical to use a piece of aluminum. Flatten one side of the ice you intend to fuse with the Nail board. A circular pattern works well Next, flatten the other surface Flip one surface onto the other. Separate the ice with a screwdriver Squirt lots of water into the seam using the syringe. If your ice is below 15 F you will need to modify this step (add water more slowly) Quickly remove the screwdriver & watch as the water squishes through the seam. We used the Nail board method to create most of the seams in this sculpture for Nike
![](https://i0.wp.com/www.icesculptingtools.com/wp-content/uploads/2017/03/wsi-imageoptim-nailboard-seam-3.jpg?fit=217%2C167&ssl=1)