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The scraper in the center of the image is a three corner scraper and is typically used to deburr holes or the internal surface of bush-type bearings. Bushes are typically made from bronze or a white metal. The scraper pictured at the bottom is a curved scraper. It has a slight curve in its profile and is also suitable for bush bearings ...
A surface plate is a solid, flat plate used as the main horizontal reference plane for precision inspection, marking out (layout), and tooling setup. [1] The surface plate is often used as the baseline for all measurements to a workpiece, therefore one primary surface is finished extremely flat with tolerances below 11.5 μm or 0.0115 mm per ...
Tools for the Job by L.T.C. Rolt "..according to some writers it was Whitworth and not Maudslay himself who first demonstrated the art of finishing a surface plate with a hand scraper." Maudslay knew the importance of a true surface plate but had not succeeded in making them with the lapping process, it was Whitworth who added the idea of ...
Engineer's blue is prepared by mixing Prussian blue with a non-drying oily material (for example, grease).The coloured oil is rubbed onto a reference surface, and the workpiece is then rubbed against the coloured reference; the transfer (by contact) of the pigment indicates the position of high spots on the workpiece or conversely highlight low points. [1]
For instance, the flat face can be used for planishing and smoothing and for hand shrinking thicker soft metals. Whereas a large hickory "torpedo mallet's" striking weight makes it best suitable for shaping soft metals such as aluminum or copper, but a similar torpedo mallet made from heavy black rubber has a striking weight which is best used ...
A Study of Scraped-Surface Heat Exchanger in Ice-Making Applications, M. Sc. Thesis. University of Toronto. "Scraped surface heat exchangers project webpage". Smith Institute. Archived from the original on 2009-03-04. Tähti, T. (2004). Suspension Melt Crystallization in Tubular and Scraped Surface Heat Exchangers, Ph. D. Thesis. Martin-Luther ...
The nose scraper typically has a smaller working edge either at both ends or just one end. This type of scraper is made from a convex blade and is used in more fine tuning work. The hollow scraper is a type of scraper that has a notch worked into the side or end of the scraper.
Small lapping plate made of cast iron. A piece of lead may be used as the lap, charged with emery, and used to cut a piece of hardened steel. The small plate shown in the first picture is a hand lapping plate. That particular plate is made of cast iron. In use, a slurry of emery powder would be spread on the plate and the workpiece simply ...