OPERATION

BUTT JOINTS

A butt joint is made by mating the end grain of one board with the edge grain of another. The bonding of glue on this type of surface is poor. However, by using biscuits you can create a strong joint that gives a mortise-and-tenon effect.

MAKING BUTT JOINTS

See Figures 11 - 12.

n Unplug the biscuit joiner.

n Place the two pieces of wood to be joined on a level

workbench. Align them against each other in the arrange-

ment in which they will be assembled.

n Using a square, determine the location of each biscuit

spline joint and mark the center of each joint by drawing

a line across the edges of the two boards.

n Loosen the locking knob and set the fence angle at

BUTT JOINTS

BISCUIT

SLOT(S) BISCUIT(S)

CENTERLINE

90°.

n Set the fence height at the desired dimension on the scale

MULTIPLE

MARK(S)

by rotating the height adjustment knob.

NOTE: The scale indicates the height of the fence from

BISCUITS STACKED

Fig. 11

the center of the blade.

n Tighten the locking knob securely.

n Select the correct depth of cut setting to match the biscuit

size you are planning to use. Make a test cut in a scrap

piece of wood from the same workpiece if possible.

n Clamp the workpiece securely so that it will not move

during the cut.

n Plug the biscuit joiner into a power supply and prepare

to make your first cut. Grasp and hold the biscuit joiner

securely with both hands.

n Place the fence against the board and align the indicator

marks on the fence with the centerline mark(s) on the

board.

n Depress the switch trigger to turn on the biscuit joiner,

then push it forward to extend the blade into the wood.

n When the base assembly bottoms out against the depth

of cut adjustment knob setting, pull back to release pres-

sure on the spring. The blade will retract from the biscuit

slot.

n Repeat this procedure for cutting the slot in the mating

workpiece.

n Once all biscuit slots have been cut, place a biscuit in

each joint and dry-assemble the workpieces. Make sure

each joint lines up and fits.

n Finally, disassemble the workpieces and place a bead

of glue in each slot. Also, spread a bead of glue over the

entire surface of the joint. Reinsert the biscuits and as-

semble the workpieces as shown in figure 10.

n Clamp the workpieces together until the glue sets up.

OFFSET BUTT JOINTS

BISCUIT

SLOT

BISCUIT

CENTERLINE

MARK(S)

Fig. 12

OFFSET BUTT JOINTS

See Figure 12.

The rails of a table or workbench are often offset from the front of the table legs. When offsets are required, it is neces- sary to cut the slots in the rails first, then readjust the fence to cut the slots in the legs.

Keeping this one exception in mind, the procedure for cut- ting offset butt joints is identical to the procedure for cutting butt joints.

For example, if a 1/4 in. offset is desired, you would mark the centerlines for cutting a butt joint as mentioned in the procedures for cutting butt joints, and cut the slots in the ends of the rails. Next you would raise the fence 1/4 in. to the desired offset and cut the slots in the legs.

15

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Ryobi JM82 manual Making Butt Joints, Offset Butt Joints, See Figures 11
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JM82 specifications

The Ryobi JM82 is a versatile and compact jigsaw, ideal for both DIY enthusiasts and professional woodworkers. Known for its powerful performance, the JM82 combines modern technology with user-friendly features to deliver precision cutting in various materials.

One of the standout characteristics of the JM82 is its 7-amp motor, providing ample power for cutting through wood, plastic, and even metal. The variable speed control allows users to adjust the cutting speed from 0 to 3,000 strokes per minute. This feature is essential for matching the cutting speed to the material being worked on, ensuring smooth and efficient cuts.

The JM82 also boasts a unique orbital action, offering four different setting options. This orbital feature enhances the cutting efficiency by allowing the blade to move in a circular motion as well as up and down, effectively reducing the resistance and enabling faster cuts in thicker materials. This level of customization empowers users to tailor their cutting techniques to specific tasks, ranging from intricate curves to straight cuts.

Another notable feature of the Ryobi JM82 is its tool-free blade change system. This mechanism allows users to quickly and easily swap out blades without needing additional tools. The ability to change blades effortlessly enhances productivity and convenience, especially when working on projects that require different blade types for various applications.

The integrated laser guide is another remarkable technological advancement in the JM82. It projects a clear line on the workpiece, ensuring precise alignment and professional-grade results. This feature is particularly useful for intricate cuts and patterns, maximizing accuracy and reducing the likelihood of mistakes.

Ergonomics is a key focus in the design of the JM82. The handle is designed with a soft grip, providing comfort during extended use and minimizing user fatigue. A built-in dust blower keeps the cutting line clear of debris, improving visibility and ensuring clean cuts.

In terms of build quality, the Ryobi JM82 is constructed with durability in mind. The sturdy design and high-quality materials ensure that the jigsaw can withstand rigorous use while maintaining its performance over time.

In summary, the Ryobi JM82 is a powerful, feature-rich jigsaw that caters to a wide range of cutting needs. With its adjustable speed, orbital action, tool-free blade change, integrated laser guide, and ergonomic design, it stands out as a reliable tool for any woodworking project. Whether you're creating intricate designs or making straight cuts, the JM82 delivers precision and performance, making it an essential addition to any toolbox.
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