To keep your ShapeUp in top operating condition, the following operational and tune-up
tips are offered.
- The ShapeUp works best on ceramic wheels of either resinoid or vitrified bond. Other
types of wheels can be shaped but tend to shorten the life of the diamond significantly.
- To maintain its sharpness, the diamond should be rotated at least at the beginning of
each shift. Heavy use might require even more frequent rotation. Replacement diamonds
should be of high quality and a minimum of 1 carat. Anything less will tend not to stand
up as well. Order PN 14130 for a replacement from Armstrong.
- After shaping with the diamond, the wheel tends to be too smooth to properly grind the
saw. The saws tend to burn. It is recommended that the wheel be "opened up" by
the use of a star- type wheel dresser. This exposes the grinding medium so that proper
grinding can take place. We recommend the use of Desmond star dresser model BCA-4 (or
equivalent) that can be ordered from your stocking distributor. This has a finer star than
the "0" or "1" that is most often found in the filing room.
- The maximum amount of stock removal when shaping should be .001" (0.025 mm) which
is accomplished with a very slight turn of the knob. Trying to remove more than this in
one pass will quickly wear out the diamond and can cause the wheel to "suck in"
the diamond creating gouges in the wheel. At the prescribed rate of removal, the diamond
should pass over the wheel rather quickly about one second across the face. If you
do adjust in more than .001", a much slower rate of travel over the wheel is
necessary. A new wheel should be pre-shaped with a shaping stone prior to using the
- Periodically check to see that all attachment bolts are tight.
- When adjusting the diamond in or out, it should begin moving as soon as you begin to
turn the knob. If you get more than 1/8 turn of screw movement before the diamond begins
to move, some adjustment of the threaded lock collar shown in the drawing needs to be
done. Back the knob off to remove any lash then loosen the set screw on the threaded lock
collar. Screw the collar into the body of the tool. Tighten the set screw and turn knob to
see if any lash still exists. Repeat as necessary. No collar adjustment is necessary on
the horizontal screw as once you have this in the desired position for your wheel shape,
tightening the lock screw will keep this from moving (see drawing).
- Pivot bearing assembly should be snug enough to provide drag throughout its arc. It
should not move so freely that, once unlocked, it will swing without the aid of the
operator. If it moves too freely, tighten the big bolt on top with a 5/16" Allen
wrench such that smooth drag is felt while swinging the arm through its arc. If you feel
any "hitches" in the movement, youve gotten it too tight.
- With the pivot arm both out to the front and to the side, gently exert pressure up and
down / in and out while observing and feeling for any movement in either the front-to-back
or the horizontal dovetail ways (be sure horizontal lock screw is backed out). If you do
detect any movement, some tightening of the gibs will be necessary. To do this, first back
out all three gib screws just until they are free. Starting with the center one, gently
bring them back in until they just come in contact with the gib. Again, starting with the
center screw, tighten to approximately 6 in. lbs. (6.9 cm/Kg) of torque. Run the wheel
adjusting and horizontal adjusting screws through their range to check for any binding or
looseness again. A 3/16" Allen wrench in an electric screwdriver works well for this.
Adjust torque as necessary.
- If you find that the shape of the wheel is different from a new wheel to one that is
about worn out, it is possible that the whole assembly has moved out of alignment. Refer
to written or video installation instructions that deal with line up of assembly to
grinding wheel mounting.
|Looseness in cone screws and rocker arms can cause erratic performance. Cone screws
should be checked yearly and replaced as required. Heavy duty rocker arms, new rocker arm
springs and longer links (#4 BSS PN 461) will allow the ShapeUp to do the job for
which it was intended more consistently. Also, aligning the arbor assembly and maintaining
that alignment is essential to keeping the wheel shape the same from month to month.
Alignment should always be checked after cone screws have been checked or replaced. Your
Armstrong Stocking Distributor has the parts and tools necessary to maintain your