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Hidden hinges are sometimes used on bracelets and jewelry pieces. I saw one on a Vietnamese bracelet once and have seen several on Diamonds International pieces. The place they pop up most frequently is in kitchen cabinets and doors on smooth surfaces like one sees on jet planes and sometimes on the sides of ships-hatches of various kinds. Look at these models because they are usually built to last and to be very sturdy. Kitchen cabinet hinges are a particularly fruitful resource.... (1996) Complete Story
A bearing is essentially tube sections which are attached to the metal being hinged into which the hinge itself is installed. The use of bearings offers us a couple of things. First of all, it offers us a way of increasing the structural strength of our hinge unit.... (1997) Complete Story
Not all sizes and wall thicknesses of tube come seamless from a factory or refiner. Especially when working in gold it is not cost effective or timely to order in a specific tube size, material, or wall thickness. There are many times when you need a piece of tubing, you don't have it, and you can't wait a day or so to order it in or run across town and buy it. In general, it is possible to make the length of tubing you require.... (1997) Complete Story
If an object will sit by itself on the shooting surface this is not a problem but often it needs to be propped up in some way. Even objects that will sit well on a flat surface sometimes need tilting slightly towards the camera by placing something under their rear side. Holding objects in place for the photograph is usually fairly easy and fast just by placing a.... (1996) Complete Story
There are several methods of obtaining the smooth rotation of a piece of metal necessary for engraving on it. Many North West Coast American Indians use a hard leather pad and hand control to do it. One can install various chucking devices onto a heavy base as well. A standard machined engravers ball can cost $500 and more. This version costs less than $30.00.... (1994) Complete Story