So i've come to a problem. In my country backing rod is sold in mm. I am stumped. I could either buy the 12mm diameter, which is close to 1/2" if I remember correctly, or I could buy the 10mm. I have no idea how much FBR expands when heated. Basically what I'm trying to say is that I'm scared 12mm will expand too much. Unfortunately its not as simple as "find out yourself" because well..
I apologize for my noobness. D:
Edited by s0lidace, 22 August 2012 - 03:04 AM.