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5.5
After the first cut the workpiece is moved along with the right handwheel for each
successive cut. The direction of movement must allow the chippings to safely clear the
mortiser.
5.6
Move the workpiece so that the slot in the chisel is releasing chips into the already cut
part of the workpiece. Refer to fig. 5.
CAUTION: Do not locate the chisel slot against the blind end of the mortise, as the
chippings will not be able to clear the chisel. This can cause overheating and possible
damage to both the chisel and bit.
5.7
When cutting deep mortises, make the cut in several stages of approximately 26mm
each, to allow chippings to clear the machine.
5.8
To prevent breakout at the back of the workpiece when cutting through mortises, use a
piece of scrap material under the workpiece as a support.
6. MAINTENANCE
6.1
Sharpening the Chisel and Bit
6.1.1
The chisel and bit should be kept sharp for optimum performance. Blunt edges will
give inaccurate mortises and can lead to overheating and breakages to both chisel
and bit. If the chisel and bit are badly worn and become difficult to sharpen, they are
to be replaced.
6.1.2
Sharpen the bit by using a small, smooth file and follow the original shape of the
bit. file the inside edge of the spur, the sides of the brad point and the cutting edge
inwards, towards the flute of the bit. Refer to fig. 6.
6.1.3
DO NOT file the outside edge of the spur, as this will affect the diameter of the bit.
6.1.4
Sharpen the chisel with a mortise chisel cutter with the correct size pilot.
NOTE: Pilot size will differ, depending on the size of chisel in use.
6.1.5
Two or three turns of the cutter in a carpenter's brace chuck should be sufficient to
sharpen the chisel. Refer to fig. 7.
6.1.6
Use a small, triangular, smooth file to relieve the inner of the chisel.
6.1.7
Remove any burrs from the outside of the chisel with a fine oilstone. Refer to fig. 8.
6.2
General Maintenance
6.2.1
The mortiser requires only minor maintenance such as cleaning, lubrication and
routine adjustment of the chisel and bit.
6.2.2
Dust the machine down after use and - as necessary - use a light application of oil or
grease to linkages and other moving parts.
7. TROUBlESHOOTING
THE PROBlEM
Noisy operation.
Dry drill bit shaft.
Bit burns or smokes.
1. Chippings not coming out of hole.
2. Dull bit.
3. feed rate too slow.
Excessive drill bit
1. Bent bit.
run out, or wobble.
2. Chuck not correctly installed.
3. Bit not correctly installed.
4. Worn or loose chuck.
5. Worn spindle bearings.
Drill binds in
1. Workpiece twisting or moving.
workpiece.
2. Excessive feed pressure.
noTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT: No liability is accepted for incorrect use of this product.
WARRANTY: Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION: for a copy of our latest catalogue and promotions call us on 01284 757525 and leave your full name and address, including postcode.
THE CAUSE
Lubricate drill bit shaft.
1. Retract bit frequently to clear chippings.
2. Sharpen or replace bit.
3. feed faster.
1. Replace bit.
2. Remove chuck and install correctly.
3. Remove bit and install correctly.
4. Replace chuck.
5. Replace bearings.
1. Support or clamp workpiece.
2. Reduce pressure and clamp workpiece.
Sole UK Distributor, Sealey Group,
Kempson Way, Suffolk Business Park,
Bury St. Edmunds, Suffolk,
IP32 7AR
Original Language Version
THE SOlUTION
01284 757500
01284 703534
Fig. 5
Fig. 6
www.sealey.co.uk
Web
sales@sealey.co.uk
email
SM96
Fig. 4
Fig. 7
Fig. 8
Issue: 2 - 25/03/10
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