INITIAL PATTERN OF 3MM HOLES
4
Please Note:
• The 3mm Pins are designed to be a tight fit in the 3mm
holes drilled using the equipment supplied - this aids the
accuracy of the finished array of 20mm holes.
• The rulers are not designed to be used as a straight edge.
The line of eleven 6mm holes are perfectly in line but the
distance from the centre of each hole to the ruler edge
may vary slightly. This does not affect the accuracy or
performance of the PGS.”
Figure 5
Figure 6
Step 1 (Figure 5)
Place a Parf Stick on the bench top with the rounded end
as shown in Figure 5. Determine where the first line and first
hole should be and line up the Parf Stick accordingly and
clamp in position.
Engage the 3mm Drill Guide in the 6mm hole in the Parf Stick
on the right as shown. Ensure that it is sitting flat on the Parf
Stick before drilling the first hole.
Insert a 3mm Pin in the hole, ensuring that it fully engages
in the 6mm holes in the Parf Stick. Now drill the hole at the
other end of the Parf Stick using the same method and insert
a second 3mm Pin in the hole.
The intermediate 3mm holes may now be drilled.
Step 2 (Figure 6)
Remove the clamps and the 3mm Pin (on the left of Figure 6)
and swing the Parf Stick around as shown in Figure 7. Place a
second Parf Stick with a 3mm Pin through hole “0” of the Stick
going into the 6th hole in the bench to the left of the 3mm Pin
in the other Parf Stick.
The two Parf Sticks now need to be joined at the 8th hole in
the vertical one and the 10th hole in the one at an angle. If
the point where they join is over the bench top then use the
second 3mm Drill Guide (with the longer spigot) to hold the
two Sticks together.
“NOTE: If a ruler is secured at either end it is possible to
apply lateral pressure in the middle which would give rise
to an inaccurate set of intermediate holes. So, having drilled
holes at either end and fixed the ruler with 3 mm pins
through those holes drill the next hole at the ruler centre
(position 5). In doing this it is essential to ensure that no
lateral force is applied. If a clamp is used near the centre
to secure the rule take great care to ensure that when
tightening the clamp that no lateral movement of the
ruler takes place.
The accuracy of this intermediate hole can be check straight
away by using the third 3 mm pin which should fit in place
without any difficulty. This third 3 mm pin should remain in
place whilst the remaining 3 mm holes are drilled.”
Then use the 3mm drill to make a hole at that point after which
the 3mm Drill Guide is removed, the left hand Parf Stick moved
away and a 3mm Pin is inserted into the fresh 3mm hole in
order to secure the vertical Parf Stick in place.
If the intersection of the two Parf Sticks is not over the bench
top, as is the case when creating a new MFT3 top, then join the
two Sticks using the Joining Screw.