The farther away from the surface the slower the Lutradur will melt. If you move the heat gun closer to the fabric the rate of melting will increase. So if you are new to heating keep the gun higher. Also the rate you move the gun around the surface will also slow the rate of melting. If you want greater lacing as opposed to melted holes than move the gun around in small circles and hold it higher above the fabric.
|Robynne Cole SAQA and Fabrigos. Portion of a work in progress|