Ryobi JM82G Manuel de l'opérateur télécharger pdf (Page 10)

10 − English

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, pages 18 - 19.

 Unplug the biscuit joiner.

 Place the two pieces of wood to be joined on a level work-

bench. Align them against each other in the arrangement

in which they will be assembled.

 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.

 Loosen the locking knob and set the fence angle at 90°.

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

by rotating the height adjustment knob.

NOTE: The scale indicates the height of the fence from

the center of the blade.

 Tighten the locking knob securely.

 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.

 Clamp the workpiece securely so that it will not move

during the cut.

 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.

 Place the fence against the board and align the indica-

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

board.

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

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

 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.

 Repeat this procedure for cutting the slot in the mating

workpiece.

 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.

 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.

 Clamp the workpieces together until the glue sets up.

OFFSET BUTT JOINTS

See Figure 12, page 19.

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.

T- JOINTS

See Figure 13, page 19.

A T-joint is used when the end of a board is joined to the face

of another board as shown in figure 12. Attaching shelves to

bookcases and inner support braces to frames are typical

applications. Actual cutting of a T-joint is as simple as any

other cut. However, it is critical that you mark the centerlines,

mark the intersection points for each slot, and cut each slot

correctly.

MAKING T- JOINTS

See Figures 14 - 15, page 19.

 Unplug the biscuit joiner.

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

workbench. The inside face of the vertical board should

be facing up.

 Determine the location of each biscuit joint and mark

the centerlines on each board. The centerlines for both

boards must line up with each other. Measure carefully;

these measurements must be accurate and precise.

NOTE: Measure twice and cut once. In addition to the

centerlines lining up, the spacing of the biscuit slots from

side-to-side must also match.

 Plug the biscuit joiner into the power supply, grasp and

hold the biscuit joiner securely with both hands, and cut

slots in

all boards that require end slots.

Follow the procedures explained in Edge-To-Edge Joints.

 Set the fence angle at 90°

 Set the fence height at the desired dimension on the scale.

 Select the correct depth of cut setting for the biscuit size

you plan to use.

 Clamp the workpiece securely, then cut each slot at the

marked centerline intersection.

Next, you must adjust the fence on the biscuit joiner in order

to cut slots into the face of the vertical board.

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Ryobi JM82G Manuel de l'opérateur Page 10

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