Ryobi DBJ50 Instructions d'exploitation télécharger pdf (Page 99)

Page 90 Power Equipment Usage Manual (Rev. 5/10)

d. Turn on machine and feed chisel and bit steadily into workpiece by pulling down the operating

handle.

NOTE: The rate of feed must be fast enough to prevent burning at the tip of the bit, but not so

fast as to cause the machine to slow or stall. The different rates of feed for different woods must

be learned through experience.

e. After the first cut, the workpiece is moved along with the right handwheel for each successive

cut. The direction of movement must allow the chips to clear freely. Move the workpiece so that

the slot in the chisel is releasing chips into the already cut part of the workpiece. See Figure 5.

When cutting deep mortises, make the cut in several

stages of approximately 1" each to allow chips to

clear. To prevent breakout at the back of the

workpiece when cutting through mortises, use a piece

of scrap material under the workpiece as support.

NOTE: The first two cuts must be on the opposite

ends of the mortise to ensure that the bit is remaining

perpendicular to the work. The first two cuts should

be made in a series of up-down motions to relieve

pressure on the bit. The rest of the cuts are made

using only 1/2 the chisel.

CAUTION: Do not have the chisel slot against the blind end of the mortise, as the chips will not

be able to clear the chisel. This can cause overheating and possible breakage of chisel or bit.

Figure

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Ryobi DBJ50 Instructions d'exploitation Page 99