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How to prep
freshly stoneground skis…
1.
Stone Grinding
Stone grinding has become one
of the most essential steps in the preparation of skis today,
especially competition skis. Proper stone grinding makes the
ski perform better at every level. It produces a flat base,
removes any oxidation, and gives the ski its base structure. For
best results, fine and extra fine structure is used in cold, dry
conditions while a bit more aggressive structure is common in
zero and moist conditions and fairly aggressive structure is
used in very wet, suction conditions.
The final fine-tuning on race,
or ski, day however is done by hand using a proper rilling tool
such as the Red Creek Seven Rolling-blade system. It should be
noted that proper Stone Grinding is also absolutely necessary
for used skis.
2.
Follow these
steps for cleaning and prepping the base after stone grinding:
·
Slight
Fibretexing and brushing with the fine steel brush (roto or
hand)
·
Vauhti Base Prep
Paraffin – melts at low temperature and deeply penetrates the
base
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Iron in a
generous amount of paraffin
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Lifts and removes
any residual particles and dirt
·
Hot scrape with a
sharp scraper
·
Repeat with
Vauhti Base Prep Paraffin
·
Hot scrape with a
dull plastic scraper
·
Cool base
completely - scrape all excessive cooled wax off
·
Brush with
horsehair brush
·
Finish brushing
with fine steel/brass roto/hand brush.
3.
Base Prepping
·
Vauhti Racing
Service Blue glider is applied followed by scraping and
brushing.
·
Allow ski bases
to cool completely before scraping with a plastic scraper.
·
Brush with
horsehair brush
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Then use the fine
steel or brass roto or hand brush.
·
Finalize the
brushing with the fine nylon brush
·
Repeat the Vauhti
Racing Service Blue glider application one to two times
depending on how the base looks
·
At the
competitive level the Norwegian Special, a combination hard
horse hair and fine steel roto brush, is the optimum brush for
base preparation
·
Finish prepping
by applying a layer of the new Vauhti SF Speed Fluor Base Prep
Paraffin.
Note:
When using a metal roto brush,
do not exert any pressure down on to the base of the ski. Drive
the unit at 1000-2000 rpm’s. This way you smooth out small
defects and remove micro-hairs from the ski base.
If doing many pairs at once,
use the Combi Brush or double handle that allows for two
different brushes. This alleviates the need to change brushes
between passes.
4.
Ski Day/Race Day
waxing:
Recreational Skiing and Training
·
Iron on glider
for the day’s conditions.
·
Let the skis cool
down (Note: blue and green need to be scraped while still warm),
·
Scrape with a
plastic scraper,
·
When the skis
have cooled completely, brush with hard horse hair and metal
brush and finish with fine nylon brush, hand or roto brush.
o
Use full drill
speed, but use absolutely no downward pressure on the system.
·
The roto cork can
be used to apply glide wax
o
Rub/crayon on the
glide wax of the day
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Slowly move the
roto cork back and forth on the tip of the ski to warm the
cork.
o
When it is warm,
increase the rpm’s and go back an forth covering small areas
until the entire glide zones have been waxed
o
Allow skis to
cool and then brush as above
Competition
·
Apply first
either SF or IR fluoro blocs depending on the conditions - iron
in
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Remove excessive
wax
·
Allow skis to
cool completely
·
Scrape with a
plastic scraper.
·
Brush with fine
horse hair and fine steel/brass hand/roto brushes.
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Apply powders,
compressed fluoros, liquid fluoros or gels according to
conditions.
To find out more about the
application of fluoros click on the Vauhti logo below...
Click to access
the Vauhti site
Roto corking
The roto cork was specifically
developed to mechanically apply fluoro blocs, fluoro powders,
compressed fluoros and fluoro liquids. The fluoros adhere
better onto the base due to the friction and heat created when
roto corked as compared to heating them in with the iron.
Durability is also increased making this step especially
important for longer races. Again, slowly move the roto cork
back and forth on the tip of the ski to warm the cork. When it
is warm then increases the rpm’s and go back and forth until the
entire ski base has been covered. Roto cork small sections at a
time (25-30 cm) and then do one or two passes over the entire
base. Note: Do not allow the ski base to become warmer
than body temperature.
Manually rub the fluoro blocs
and compressed fluoros onto the base. The liquid and powders
must be smeared first using the natural hand cork.
Allow the skis to cool
completely and brush according to the conditions.
Racing Service
After using the horse hair
brush, clean the structure using the fine steel/brass or extra
fine steel/brass hand brushes. Finish with the fine white nylon
brush. Brush until there is no more fine powder being produced
present.
Note: Let the skis cool down
outside. For best results, the final brushing must be done
outside when the skis and the snow/air are the same
temperature. Do not press against the brushes.
Note:
World Championships have been won on freshly stoneground and
prepped skis as described above.
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