A range of solid and hollow metal extrusions is available, ranging from flat strips to complex hexagonal tube. Cast alloy parts are also made. Stainless steel sheet and tube is attractive, but its high cost and the difficulties of cutting and joining it mean that mild steel is the norm. A variety of surface treatments can be used, as a protection against corrosion and to improve its appearance. Chrome plating is inexpensive, but is prone to rust-pitting. Nickel, bronze or aluminium plating are also used. Various kinds of paints, like stove enamel, and cold-cured polyurethanes are less costly. The best results, where corrosion resistance and lasting good looks are required, are probably attained with plastic coatings. These are of various kinds, and may be chosen to suit the cost and application of the project. One of the most expensive but durable plastic coatings is applied to the clean tube in the form of a thin tubing, heat-shrunk into place. This is difficult to apply to all shapes of component, and so a variety of other methods may be employed either on the whole piece or selected components. One of the most used is powder-coating. With this technique the metal parts are pre-heated in an oven and then sprayed or fluid-bed coated with powdered plastic resin. The thickness of this coat can be controlled by varying the pre-heat temperature. The coated article is then passed through another heat cycle which fuses the powder into a smooth gloss finish.

The Complete Guide To Wood Finishing

The Complete Guide To Wood Finishing

Wood finishing can be tricky and after spending hours on building your project you want to be sure that you get the best outcome possible. In The Complete Guide To Wood Finishing you will learn how to get beautiful, professional results no matter what your project is, even if you have never tried your hand at wood finishing before. You will learn about every step in the wood finishing process from a professional wood finisher with years of experience.

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