Old Glossary Terms - Router Forums

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post #1 of 1 (permalink) Old 10-14-2008, 02:30 AM Thread Starter
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Exclamation Old Glossary Terms

Hey guys, as explained in the new glossary thread, these are the old terms from the old glossary. They need to manually be resubmitted into the new glossary. If you're interested in doing this, feel free to copy + paste them in!

Thanks a lot guys!!!

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Upcut Spiral Router Bit: Upcut spiral bit produces a clean cut. Makes good joint cuts.

Bit: Cutting tool used in routers, shapers, drills, etc.

Pilot Bearing: A bearing is used on some router bits to control the depth of cut.

Router Table: A router table allows you to fit the router upside down with the bit protruding through a hole in the top, and wood can be fed along a guide fence to be shaped. Ideal for raised panel and rail and stile work.

Corner Chisel: A tool used to square the rounded corners of a mortise cut with a router.

Collet: sleeve used for holding the router bit concentric to the router output shaft.

Bearing Guide: A bearing fitted on the shank above or below the cutting edge of a router bit to guide the bit along a surface.

Bushings: Metal guides inserted into a router plate that allow a router to follow a pattern or template at a set distance from the pattern. These are typically made of brass or steel. Steel bushings tend to unscrew with use due to vibrations of the router. The router bit passes through the center of a hole in the center of the bushing. This allows the bushing to absorb pressure from pressing the router into a template which prevents undue stresses on the bit.

Carbide: An extremely hard metal compound used to make the cutting edge or blade of a router bit. There are various grades of carbide.

Keyhole Bit: A bit with a T-shaped profile with cutters on the top and edges of the upper part of the "T", and cutters on the sides of the lower part. It allows you to plunge into wood, making a wider circular opening and then move the router which will cut a wider opening inside the wood and a narrow opening near the surface. This lets you easily create a way to hang frames or other items by putting the head of a nail or screw into the wide opening and then sliding it into the more narrow opening. This traps the nail or screw and ensures the piece won't easily fall off the wall.

Overhead Routing: A way of mounting a router so the bit is facing downward allowing it to be use for milling operations and providing more support and accuracy than would be possible using the router in a handheld fashion.

Woodrat: A versatile joint making machine that allows a router to be used in an overhead fashion to quickly and easily create many different kinds of joints using the router.

Back Cutting: Moving the router in the same direction as the bit is turning or the effect of such movement on the piece being routed.

Back Cutter: A second cutterhead above the profile cutter on a raised-panel router bit used to cut away material on the back-side of the panel allowing for the panel face to rest in the same plane as the rail and stiles.

Panel Raising Bit: A router bit that cuts the edges of a panel allowing for the panel to slip into grooves placed in rails and stiles, thus forming most often a cabinet face. Panel raising bits may or may not have backcutters.

Pendulum Router: A type of overhead router that allows the router to swing in an arc. It can be very useful for scooping out shallow trays or seats for wooden chairs.

Plunge Bit: A router bit that can be plunged directly into the wood and then cut in any direction.

Profile: The term used to describe the decorative edge or design a router bit will leave as it passes through the wood.

Spiral Bit: A router bit that appears twisted to allow extraction of wood chips. Spiral bits can be either up spiral or down spiral. Up spiral bits extract wood toward the shank while down spiral bits push chips away from the shank.

Centering Pin: A pin that is inserted into the collet of a router to allow for centering adjustment of the bit to the baseplate or bushing.

Dish Bit: A router bit that can plunge into the stock and create a slightly round bottomed groove. Most often used to cut grooves in the top of shelves to allow placement of dishes for display.

Starting Pin: A pin, usually brass, that is inserted into the router table and allows the user to brace material against the pin, allowing for the work to be eased into the cutters, eliminating the chance for kickback.

Bit Sets: A grouping of router bits sold as a collection often packaged in boxes. Common ones are: "popular bits" a collection of often used bits "door consturction" "stile and rail" "plywood"just to name a few.

Fine Adjusting Tool: A small hammer used to gently move items to align them. Often used to tap a fence into alignment on "the Router Workshop".

Mr. Router: Bob Rosendahl

Safety Depth Marking: Some router bits have a marking on the shaft that indicates the minimum amount the bit must be inserted in the chuck/collet in order for it to operate safely.

The Router Workshop: A PBS fine woodworking show where Bob and Rick do a number of projects showing us various techniques and tips to make us all better router users.

Depth-Gauge: an accessory used to measure the height setting from a table, base, or fence for router bits, saw blades, etc.

V Tongue And Groove Bit: These router bit can be bought either as a matched pair [Tongue profile, and groove profile]. Or as a single bit, in this case, you have to remove the centre in order to make the opposite profile. Used for joining parallel boards, for paneling and table tops etc. the "V" is mainly for decorative purposes. Exceptionally strong joint

Floating Tenon: This is a type of tenon, commonly made with a specialty router bit. The tenon is not attached to either side of the joint, instead a mortise is cut in both sides of the joint and the tenon is glued in place.

Shear Cut: The cutting edge of the bit is at an angle to the axis of the shaft and slices through the material being cut rather than chopping it, thus making a smoother cut with less load on the router.

Sub Base Plate: This is the accurate name for a plate screwed onto the bottom of the router base. Specialty sub base plates would include circle cutting guides, edge guides and vacuum attachments. Guide bushings are most often mounted to the sub base plate.

RotoZip: This is a brand name of a specialty router used for free hand routing. Most common uses of this type of router are wood carving, cutting drywall or ceiling tile, and trimming ceramic tile. There are bits designed specificly for each purpose. This type of router is also known as a rotary saw and is sold under many brand names.

Trim Router: A small router, usually under 1 HP that is primarily used for trimming laminate on edges.

Drawer Pull Bit: A router bit used to cut a lip into the stock allowing for the end user to slip his fingers into and use as a handle to open drawers and cabinets.

Rotary Tool: A very versatile tool that operates much like a router. Different bits allow for routing, sanding, grinding, sharpening, polishing, carving and drilling.

Router: The tool used to cut into wood or along the edge of wood allowing for sizing of wood, pattern making, or decorative appeal.

Router Lift: Accessory to a router table that allows height adjustment of the router bit from above the table.

Router Mat: A soft mat that grips the wood and helps to hold it securely in place while routing.

Window Sash Bit: A router bit used to create the decorative profile that holds the glass in a window.

Cleaning Anti-rust Coatings Off Router Bit Shank: Router bits are often shipped with an anit-rust coating on the shank of the bit. The router collet may not grip the bit well enough with this coating on the shank. Follow the instructions that came with the bit for cleaning. If no instuctions were given then use methyl hydrate or mineral spirits to clean the shank before use.

Depth Of Cut: The distance that the router bit cuts into the material. Critical in the case of dove-tail joints.

Phenolic: a hard material used to make router templates

Z Axis: This refers to up / down motion, the depth or height of the router bit.

Horizontal Panel Raising Bit: This type of bit generally has a very large diameter, in the 3-1/2" range. These bits must be run at slowest speeds and the use of a speed controller is required. These bits also require more power and 3-1/4 HP routers are recommended

Horizontal Router Table: A horizontal router table has the router mounted sideways on a plate so the bit is parralel to the table surface. This type of table is best for panel raising with vertical panel raising bits and cutting mortises.

Vertical Panel Raising Bit: A vertical panel raising bit is used with either a high fence or a horizontal router table to profile the edge of raised panels. These bits are much smaller in diameter than horizontal panel raising bits, require less power, run at higher speeds and generally cost less. The smaller mass in motion means these bits are safer too.
ksidwy, BIG OLD TIM and mbar57 like this.

Mark,
Founder of RouterForums.com

Last edited by Mark; 10-14-2008 at 03:22 AM.
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