In a few days we’ll be sending out the cores for our SP15 and SP20 form rollers to be recast. Would it be a good idea to have them recast at a slightly larger diameter (perhaps 2.51 inches for the SP15 and 3.01 inches for the SP20) to make them last a little longer, or will this have a negative consequence?
It is original Vandercook specs. Rubber rollers shrink a little bit the first year or so after manufacture. And .030 diameter is .015 actual increase on the surface of the roller and that’s really immaterial.
So, this need not be a concern of the customer?
Is that overwork a standard practice among roller makers?
The general rule is to add .030″ to the base diameter of 2.500″ and 3.000″, and that is primariy to allow for shrinkage that will happen the first year with any synthetic rubber roller, and these are original Vandercook specifications. Measurements are always to 3 decimal points.