EIBENSTOCK DB 200 GR Notice Originale page 25

You have hit reinforced iron when you recognise while drilling that the
feed rate gets very low, when you need to use more force, or when the
water leaking from the bore hole clearly shows some metal chips.
Reduce the pressure on the drill bit to cut through the reinforced iron
without any problems. You can increase the pressure again when you
have cut through the reinforced iron.
Inclined drilling
Drill bit extension
When you need to drill deeper than the usable length of your drill bit is:
First, only drill to the point the usable length of the bit reaches.
Remove the bit and pull the centre core out of the hole without
moving the core drilling unit.
Push the drill bit back into the bore hole.
Screw an adequate extension between drill bit and motor. If the collet of
the drill bit is 1 ¼" , please do not forget the copper rings which make the
removal of the drill bit easier.
Always use drill bits which match the material which has to be drilled.
You can prevent the machine from damage if you only use drill bits which
are balanced and not deformed. Pay attention that diamond segments
have enough relief cut towards the drill bit body.
Loosen the clamp lever on the bracing.
Position the column in the appropriate angle and
tighten both screws and the clamp lever again.
After drilling put the column back in the
90°position.
Drill Bits
Loosen both Allen screws M10 with
the enclosed wrench SW 8.
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