Terra sigillata (or terra sig, as many potters call it) is an ancient technique of decorating pottery. Slip forming, continuous poured, continuously formed, or slipform construction is a construction method in which concrete is poured into a continuously moving form. First off, you’ll need to cover your work in a full layer of slip and very gently swirl the slip round in the dish. Slip forming is used for tall structures, as well as horizontal structures, such as roadways. What you see is what you get.
In horizontal slip forming for pavement and traffic separation walls concrete is laid down, vibrated, worked, and settled in place while the form itself slowly moves ahead. Slip forming relies on the quick-setting properties of concrete, and requires a balance between quick-setting capacity and workability. It is most famous for being the slip decoration of choice by ancient Greek potters, as well as its use by Pueblo potters in the southwestern United States. MacDonald Engineering's slip form concrete grain silos, International Federation for Structural Concrete, Asbestos Testing and Consultancy Association, Associated General Contractors of America, Association of Plumbing and Heating Contractors, Chartered Institute of Plumbing and Heating Engineering, Civil Engineering Contractors Association, Construction Management Association of America, National Association of Women in Construction, National Railroad Construction and Maintenance Association, https://en.wikipedia.org/w/index.php?title=Slip_forming&oldid=982094140, Creative Commons Attribution-ShareAlike License, This page was last edited on 6 October 2020, at 04:05.  Generally, the slipform rises at a rate which permits the concrete to harden by the time it emerges from the bottom of the form.. This article is about pouring concrete in moving forms. In addition to the typical silos and shear walls and cores in buildings, the system is used for lining underground shafts and surge tanks in hydroelectric generating facilities. Specialized slip recipes may be applied to biscuit ware and then refired.
I really admire Lisa’s textured surfaces, and have just purchased her video.  Usually the mixing of slip is undertaken in a blunger although it can be done using other types of mixers or even by hand. (can’t wait!) For another type of slip forming, see, "'Slip Forming' Technique Introduced in Baltimore.".
View a clip from Lisa’s full-length video Flat to Functional: Handbuilding and Slip Decorating here! There are lots of ways to create texture on pottery, the most obvious being stamping the malleable surface.
Engobe, from the French word for slip, is an American English term for materials similar to a slip, though the definition seems variable. Another shear wall supported structure was the Casa Del Mar Condominium on Key Biscayne, Miami, FL in 1970. The former Landmark Hotel & Casino in Las Vegas was constructed in 1961 by MacDonald Engineering as a subcontractor, utilizing Macdonald’s concept of slip form concrete construction to build the 31 story reinforced steel tower. Slip trailing is a great way to use clay slip as a decorative tool. Slip can be used: An additive with deflocculant properties, such as sodium silicate, can be added to the slip to disperse the raw material particles. Slip … Slipping is a defensive technique that allows you to counter faster because your hands aren’t used for defense. In the terra sigillata technique, no glaze is used at all. Lisa Naples creates beautiful random texture on her work with slips of varying consistencies.
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