Freud 99-031 1-1/2-Inch Reversible Glue Joint Bit
by Freud
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Product Details
Manufacturer: FreudModel: 99-031
Product features:
- Provides a stronger joint by increasing the surface area for glue
- Cuts all composition materials, plywood, hardwood and soft wood
- Precision-ground carbide bits are made with added titanium; impervious to chemical attack
- Computer-balanced for vibration-free operation
- 1-1/2-Inch bit diameter; 1/2-Inch shank diameter
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Description of Freud 99-031 1-1/2-Inch Reversible Glue Joint Bit
Application: Provides a stronger joint by increasing the surface area for glue. Plane boards to a uniform thickness; align bit to the center of the board, then reverse each board for a perfect glue joint. Cuts all composition materials, plywoods, hardwoods, and softwoods. Use on CNC and other automatic routers, as well as table-mounted portable routers. Specs:Rockler #: 38706Freud #: 99-031OverallDia.: 1-1/2''SmallDia.: 1-3/16''CarbideHeight: 1-1/4''Angle: 30 degreesShankDia.: 1/2''OverallLength: 2-3/4''The Freud Difference
Freud manufactures some of the most innovative, technologically advanced woodworking tools and accessories in the world. To ensure that the highest quality products meet the toughest design standards, Freud owns and operates six manufacturing facilities in Western Europe. Freud is one of the few manufacturers of woodworking tools in the world that produces its own MicroGrain carbide with titanium, called TiCo -- a combination of titanium and cobalt. Freud develops different types of carbide for each application to maximize the cutting life and performance of the tool; and Freud also operates one of the most modern product development research centers in Europe. By overseeing the entire manufacturing process from start to finish, Freud guarantees some of the highest quality, most advanced products in the industry.
About Freud's Industrial Bits
Serious woodworkers choose serious accessories. They choose Freud. The Freud name equals quality, precision and craftsmanship. Freud router bits feature TiCo Hi-Density Carbide for maximum cutting life and are individually balanced; providing a cut above the rest. When you?re looking for a serious router bit, look for Freud red.
About the Reversible Glue Joint Bit
The Freud 1-1/2-inch reversible glue joint bit provides a stronger joint by increasing the surface area for glue. This precision-ground carbide bit is made with added titanium, making it impervious to chemical attack. The bit is computer-balanced to insure vibration-free operation at speeds that are a safe margin above the typical 22,000 rpm of most routers.
Applications
Use this bit to increase joint strength by expanding the surface area available to accept gluing. For use on CNC and other automatic routers as well as hand-held and table-mounted portable routers, this bit cuts all composition materials, plywood, hardwood, and soft wood.
Key Tech Specs:
- Overall diameter: 1-1/2 inch
- Shank diameter: 1/2 inch
- Carbide height: 1-1/4 inch
- Angle: 30 degrees
- Overall length: 2-3/4 inches
Warranty
This bit is covered by Freud's limited lifetime warranty.
Tools and Hardware Reviews of Freud 99-031 1-1/2-Inch Reversible Glue Joint Bit
Customer Review: Excellent bit, does what it is designed to do
Summary: 5 Stars
As with all Freud bits I own, this one performs very well. Very sharp, cuts clean, and lasts. The bit is really quite easy to use if you have the right equipment and a bit of wood working experience. Below I address a few of the comments in other reviews:
Increasing glue surface and strength - The edge created by this bit adds about 3/8ths inch to the edge surface for the length of the board (3 - 1/8 inch vertical surfaces). So on a 3/4 inch board, 3 feet long, there is about a 50% increase in surface area for glueing or an additional 13.5 square inches of surface glued ... this is significant and will add strenth. Adding biscuts, as someone suggested, will add very little and in my opinion are extra unnecessary work.
As all reviewers indicate you must be very precise with alignment, but this is true in all of quality woodworking and especially when edge gluing. With the right equipment and scrap wood of the same thickness wood you are edging you can have this bit aligned sufficently within a few minutes. There are two adjustements you must make, not just one as indicated in some reviews. The height is critical to the boards align but it is also important to set the depth of cut correctly and match the outfeed fence accordingly.
To set the height I initially just eyeball it with a piece of wood on the router table so that the two large router bit flat surfaces look like they will cut equal amounts off the outer edges. Run two scraps through the bit and see how they fit together. Measure the amount they are off and divide this by two. Then adjust the router up or down by this amount (you need to look at which direction to adjust). Run another test. For me at this point I am generally within 1/64th. If still not aligned, repeat. It should only take 2 or 3 tests passes to get this alignment.
The other alignment is the depth of cut. One advantage of this bit is you don't need to edge plane your boards before glueing. You can make your rip cuts on the table saw and as long as the boards have straight edges, even with some saw marks, this bit will do the edge planing for you. However this means you must also adjust the outfeed fence on the router table accordingly, just as you would on a jointer. The depth of cut should be set to take a small amount of wood off of the entire edge. I set the depth to take about 1/64th off the large flat areas on the edge and I use a shim on my router table outfeed fence of the same thickness. You can set this depth deeper, just match the shim on the outfeed to the same. I make these adjustements at the same time I am making the bit height adjustments so no extra test runs are necessary.
Comments on plane wood to same thickness - This is true whenever gluing up panels, regarless of the method. If the wood is not the same thickness it can not be flush on both sides. If you don't have a planer choose boards which are virtually the same thickness.
The right equipment includes a good router table and a good router which can be adjusted accurately in tiny increments (128th or 64th inch). I also recommend an accurate measuring tool to 1/64 inch.
I run this bit at 17,000 to 18,000 rpm, which is what Freud recommends. I have experience no burning or chipping. This bit is 1 1/2 inch diameter and this is the correct speed for a bit of this size. The larger the diameter of the bit, the faster the outer edge is moving and therefore the slow the bit should be run.
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