18 point or larger with 72 point commonly being available, but the machine could cast type from 4pt to 600pt without a mould change. This was from brass matrix stored in cases on either side of the Ludlow. The cases were not the traditional "California Job Cases" used to set body type, but simpler alphabetically arranged wooden or metal cases, each one containing a given font in a specific size and style such as bold face, italic or condensed. The metal type cabinets were built with inclined drawers for easy access to the matrices. After a line of type was assembled into the stick a special blocking slug was inserted to seal the end. Then the stick was placed mold side down into the slot on the table, a clamp locked down to securely hold the stick and the Ludlow activated. The plunger would snap down into the pot with considerable force, injecting molten type metal into the mold at a high speed to ensure the mold was filled before the metal solidified. If the stick was not properly filled out or mounted firmly, or the special terminating block was forgotten, a dreaded "splash" would result, often encasing the operator's toes in molten lead and leaving a mess that needed to be peeled off the Ludlow surfaces. Operators were encouraged to wear heavy boots with steel toes and be quick at removing one. It was also not uncommon for some of the type metal to be projected up onto the ceiling, no matter the height. As with the Linotype / Intertype machines, the Ludlow machines were often fitted with metal feeders to keep the pot filled to optimum level. Towards the end of its life as a common backshop type setter, the Ludlow was often joined by the "Super Surfacer" a specially designed surface plane that would smooth the surface of the freshly cast type and ensure it was exactly type high. A Ludlow slug was just the letters overhanging a central spine about 12 points wide (T-shaped viewed from the end). It needed to be bolstered by Elrod slugs on either side for support. The number of slugs above and below the central spine could adjust the white space above and below the type making it a very flexible system for large type. The Elrod was a machine used to cast rules and spacing material (leading) of a specific