MASS Concrete | MASS Concrete are the leading manufacturer of Concrete surfaces in the UK. We are wi. Metal fabrication. Metal fabrication is the building of metal structures by cutting, bending, and assembling processes: Fabrication comprises or overlaps with various metalworking specialties: Fabrication shops and machine shops have overlapping capabilities, but fabrication shops generally concentrate on metal preparation and assembly as described above.
By comparison, machine shops also cut metal, but they are more concerned with the machining of parts on machine tools. [edit] Metal fabrication is a value added process that involves the construction of machines and structures from various raw materials. Fabrication shops are employed by contractors, OEMs and VARs. Raw materials[edit] Standard raw materials used by metal fabricators are; Cutting and burning[edit] The raw material has to be cut to size. Special band saws designed for cutting metal have hardened blades and a feed mechanism for even cutting. Burn tables are CNC cutting torches, usually natural gas powered. Forming[edit] Machining[edit] Armormaking for the Fiberglass Phobic - materials. Tutorials. Getting screws to hold in end grain. Because wood is relatively weak perpendicular to its grain, screws don't hold that well when screwed into the end grain.
This firstly because the thread has a harder time cutting into the grain fro the side, and also because what it does grab shears out more easily, as the shear is cross-grain. Wood screws do, however, hold extremely well in cross grain. So the trick to making screws really hold in the end of a piece of wood is to give them a bit of cross-grained wood to bite into. The easiest way to do this is to put a hardwood plug into the wood, 5/8" or 3/4" in diameter. Drill a hole that goes nearly through your piece of wood with a forstner bit, and then glue the dowel in place. The illustration at left shows how far the screw would penetrate, if it was actually in the wood. This approach is much cheaper, and probably stronger, than using some specialized fastener using a machine screw and some sort of specialized nut to insert in a hole.
Back to the Shop tricks section. Getting screws to hold in end grain. CNC Panel Joinery Notebook. I’ve been collecting clever ways of slotting flat stock together since I first read Nomadic Furniture back in 1999, well before the advent of the accessible hobby-class CNC tools that, today, make manufacturing parts like these pretty easy. Now, the world is full of people designing models, project enclosures, sculpture, furniture, and all kinds of other cool stuff to be assembled from parts made on laser cutters and CNC routers, and I keep expecting a definitive book or website to emerge that covers the “bag of tricks” in an organized way.
So far, I haven’t found it. I may have missed it. Or maybe this article can serve as a jumping-off point. In any case, I think it’s time to open up my file. In presenting this material, I want to first acknowledge my respect for the world’s established and ancient traditions of joinery. I may abuse some terms, without meaning to, and I am glad to be corrected by those who are in the know about traditional joinery. Laser vs. Biasing Cross (“X”) Joints.