Q.V.P. VAKUUM KLAMPING - Manual (Page 4)

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5/6/98 - Klamping Instructions.cdr
TAPING & JIG INSTRUCTIONS
USING TWO VAKUUM JIGS
TOGETHER
You can combine the jigs to make the job easier. Figure
4 shows the use of the baseplate holding a work piece to
the bench top while at the same time using the straight
edge on top of the work piece. With the work piece off
the bench, you can now use the straight edge as a guide
for cutting or routing.
MAKING, MAINTAINING AND
MODIFYING THE ACRYLIC
JIGS.
SAWING
The acrylic can be machined like hardwood. Cutting
small quantities with a carbide, standard hollow ground,
fine tooth blade used for cross cutting wood or plywood
is suitable. The blade should be about 2" above the
acrylic. Feed at a rate of 3 - 4" per second (15 - 20
ft/min) with a blade speed of approximately 3450 rpm.
ROUTING
The minimum no load router speed of 10,000rpms is
required. Higher speeds up to 20,000rpm are better. A
double, straight fluted cutter with 2" diameter will
produce a smooth cut with a feed rate of 10 - 25
feet/min.
JOINTER
Take very light passes as acrylic is harder than most
woods.
For more detailed information on machining acrylic, you
can order a 47-page book “Working with Acrylic” (Stock #
1106347) from Craftics, Inc. (773)-235-3307.
For templet routing, use a flat nonporous bench top.
Drill a hole and install a male quick disconnect at the
bottom of the bench. This allows you to place any
templet over the vacuum hole and hold the workpiece
without interference from mechanical clamps. The
templets are made like the Basic Baseplate, except they
do not have the side connector hole. Any shape
template can be made, all it needs is a through hole and
the top and bottom to have a ring of VAK tape. The
template is placed over the VAK hole and the workpiece
placed on top. This creates a vacuum sandwich that
securely holds the template and the workpiece as per
Figure 9.
NOTES:
To calculate the HOLDING FORCE, use the following
formula; Vacuum level (per the vacuum gauge) divided
by 2, multiplied by the number of sq.in. enclosed by the
VAK tape.
EXAMPLE:
If the gauge reads 22"Hg and the VAK tape encloses an
8"x10" area (80 sq.in.), the HOLDING FORCE is (22/2) x
80 = 880lbs of clamping force.
IF YOU HAVE PROBLEMS:
! Check for leaks and correct
! Adjust the air pressure up or down
! Reread the directions
74 Apsley St. - Hudson, MA 01749
Tel: 978-562-4680 - Fax: 978-562-4681