On Apr 27, 4:35*pm, Bob Engelhardt wrote:
When a slip roll such as this one:http://www.harborfreight.com/cpi/cta...emnumber=36698
is spec'ed as 12" x 20ga, I assume that means it can roll a 12" piece of
20ga (doh). *But I also assume that if the piece is less than 12" wide,
it can be more than 20ga thick. *The question is: how much thicker? *Is
there a rule of thumb for the relationship of thickness & width?

I assume (again) that the limiting factor is the diameter of the roll.
That is, for example, if a 12" piece thicker than 20ga were put through
this roll, the rolls would deflect & cause uneven rolling of the stock.
* But narrower pieces would be rolled near one end, minimizing the
deflection of the roll. *??

Thanks,
Bob

I believe the stiffness in proportional to the width and to the
thickness cubed. So if the thickness was twice as thick as 20 gauge
then the width would have to be 1/8 of 12 inches or 1.5 inches.


Dan