Ryobi DBJ50 Instructions d'exploitation télécharger pdf (Page 46)

Page 37 Power Equipment Usage Manual (Rev. 5/10)

Another benefit of the sacrificial fence is that if made tall enough, a feather board can be clamped to it

to help keep the wood being cut flat on the table to ensure a consistent depth dado. We do not

currently have one in our Woodshop, but one can be made.

To make a dado or rabbet cut:

a) Remove blade guard and splitter assembly.

b) Stack the saws and cutters and install:

• The cutters are heavily swaged and must be arranged so that the teeth do not hit each other

during rotation.

• The heavy portion of the cutters should fall in the

gullets of the outside saws (Figure 2).

• The saw and cutter overlap is shown in Figure 3 - (A)

being the outside saw, (B) an inside cutter, and (C) a

paper washer or washers, used as needed to control

the exact width of groove.

• Position the teeth of the saws so that the raker on

one saw is beside the cutting teeth on the other saw.

• Install the set, making sure the teeth point to the front of the saw, and securely fasten.

• Install the Dado Insert.

c) Perform test cuts on scrap pieces to be sure the dado width fits properly. Dado sets usually

include a chart specifying combinations of blades and chippers to produce common width

grooves. You will often have to shim that stack slightly to get a proper fit.

d) Use push pads, push sticks, hold-downs, jigs, fixtures,

and/or featherboards to help guide and control the

workpiece. In addition to the increased “grip” on the

wood, these devices add distance and material between

your hands, the wood and the cutter. Because of the

inconsistency of wood thickness you cannot assume the

cutter is buried in the wood and that it is safe to push the

wood across it with bare hands.

e) Keep the wood flat on the table and maintain a feed rate

that allows the cutter to work rather than force feeding the wood into it. Even at cutting depths

of 1/4”, the width of the dado cutter means that a considerable amount of wood is being

removed. Overly fast feed rates can easily translate into chipping at the edges and an

inconsistent depth of the cut.

Figures 2 & 3

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Ryobi DBJ50 Instructions d'exploitation Page 46