10. Working with the ring guard fence
When working with the ring guard fence, a support must be used, except when a certain
process does not allow this, i.e. when the piece is too large to make the use of the support
practical, or when the piece is so small or so difficult to machine that it cannot be held in the
support without danger.
The final shape is obtained by holding the gauge against a guidance bearing which is fixed to
the spindle while the piece is held against the tool. The gauge can be part of the support.
11. Chamfering
When chamfering, a solid support or a tiltable adjustable spindle guard fence must be used.
A woodpusher must be used for the final part of the machining.
12. Working in the same direction as the tools
It is extremely dangerous to work in the same direction as the tools, as the operator cannot
exert force to resist the strong movement of the piece as the tool comes into contact with it.
Working in the same direction as the tools is absolutely forbidden, even when a support is
used.
13. Other machining
For other types of work, e.g. tenoning, special gauges or supports can be used in order to
avoid accidents.
14. Use of safety accesories
The following safety accesories can be used to help the operator during his work:
- supports
- woodpushers
- power feeders
- rollers
- stops
14. Noise reduction
- The condition of the tools is important to keep the noise level as low as possible.
- The material and the position of the guards is important to reduce the noise level.
- Using the correct speed will reduce the noise level.
- What is mentioned above does not take away the fact that separate safety equipment must
still be used.
Explanation of accoustic levels
The values given are the output levels; these are not necessarily the levels on which the
operator can work safely.
Although there is a link between the output values and the safe working levels, it cannot be
used in a reliable way to determine weather supplementary measures should be taken.
Accoustic levels
- measurements: as per ISO norm 7960
- as per annexe D
Function Level continuous
accoustic pressure
per idex A
DB(A)
Level accoustic power
DB(A) (MW)
Max. value accoustic
pressure as per index
C (instantaneous)
dB
Saw 88 103 (19,9) < 130
Spindle 84 97 (3,2) < 130
Tenoning 86 97 (5) < 130
Jointer 92 98 (6,3) < 130
Thicknesser 83 97 (5) < 130
Mortiser 96 107 (250,1) < 130
