VERITAS Mk.II, Manual

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21
Care and Maintenance
Lubrication
Tool Guide Rod, Tool Holder & Tool Guide Post:
Do not use any kind of oil or grease on the mating
surfaces of either the tool guide rod or tool holder. They
are exposed to a dusty, abrasive environment where oil
would only serve to collect metal and abrasive particles.
Wax or powdered graphite may be used if desired, but
should not be necessary.
Abrasives
Replacement: All the abrasives will eventually need to
be replaced. The old abrasive discs will come off, leaving
some adhesive residue. Any adhesive left behind should
be removed with mineral spirits or a citrus-based solvent.
Avoid harsh solvents such as acetone, toluene or xylene.
Avoid vigorous scraping as this may damage the surface.
Wipe the platter with a clean rag dampened with methyl
hydrate, methanol, methylated spirits or isopropyl alcohol
to remove any oily residue from the mineral spirits or
citrus-based solvents. Re-apply the abrasive discs using
the same technique as for initial installation.
Storage: While using the sharpening system, there will
always be one or more platters not on the turntable,
but close at hand, ready for the next tool or stage of
sharpening. These idle platters (especially the one
with the fi ne abrasive grades) should be kept where
steel and abrasive particles will not collect on them.
Anywhere above the level of the turntable or to the
right will suffi ce. Store unused abrasive discs fl at in
a plastic bag, ideally between a couple of boards or
other similar arrangement. They should be stored at
a temperature below 80°F (27°C), and not exposed to
sunlight. The PSA backing on abrasives has a shelf life
of about 2 years. To be on the safe side, only keep stock
on hand that will be installed within a year of purchase.
After installation, the working lifetime of the adhesive
is lengthened considerably, but cannot be accurately
predicted due to many variables involved (principally,
temperature and humidity).
Use: Always bear in mind that the lifetime of any sheet
abrasive is limited to the thickness of the abrasive
mineral applied to the substrate. Abrasive action always
wears away both the workpiece and the abrasive itself.
To sharpen the most tools with a set of abrasive discs,
avoid any unnecessary abrasion. Although the turntable
is well suited for general shop use as a disc sander,
using the system solely for tool sharpening will help
prolong abrasive life, as will using the techniques
already mentioned above.
Cleaning: A crepe rubber block is useful for periodically
cleaning the coarse abrasives used with the sharpening
system. However, using a crepe block on any grade fi ner
than 60µ (220x) will clog the abrasive. For fi ner grades,
use a clean rag dampened with a citrus-based cleaner
or an alcohol-based solvent, such as methyl hydrate or
isopropyl alcohol. With the power on, apply the rag to
the moving abrasive with a rolling motion. If you are
old enough to have cleaned a vinyl LP record, it is the
same basic technique.
Spare Parts
The more frequently required spare parts are listed in
Appendix B: Optional & Accessory Parts .
V-Belt
The drive belt is a tough, polyurethane V-belt that should
last the lifetime of the product; however, misalignment
may considerably reduce its life.
To replace the belt:
a) Remove the turntable.
b) Loosen the three motor mount screws just enough
to allow the motor to move.
c) Slide the motor over to loosen the belt.
d) Remove and replace the belt.
e) Retension the belt as noted in
Chapter 2 .
f) Ensure the pulleys are aligned.
If the sharpening system is to be left unused for extended
periods of time, the belt tension should be relieved.
Chapter 6
Care and Maintenance