> Can you add an additional neoprene wheel or caster that is not > loadbearing but merely for ESD? That was my immediate thought too. Mount it on a long stiff arm so it is like a static strap, but has a wheel on the end instead of just dragging on the floor. But 1/2" expansion every 10 feet - what temperature range do they expect ??? -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist