Bridge City HP-9v2 Manuel utilisateur
BRIDGE CITY TOOL WORKS
Bridge City HP-9v2
Dual Angle
Block Plane
Quality is contagious
ENGLISH VERSION
Fig. 1: Nomenclature
IronClamping
Mechanism
IronAdjustment
Mechanism
Depth Skids
Assembly
Fence
Assembly
Main Body
Iron
HP-9v2 Dual Angle Block Plane
Congratulations on your purchase of the HP-9v2 Dual Angle Block
Plane. Please read the following general usage and set-up notes prior
to using your new plane.
Overview
The HP-9v2 Dual Angle Plane is a “bevel up” plane. This means that
the iron bevel is visible from the top of the plane when bedded. The
iron bed of the HP-9v2 plane is pitched 12° from the bottom (or “sole”)
of the plane.
The sole and adjustable throat plate are solid stainless steel, and the
anodized aluminum sides are pinned to the sole and retained by
screws. Do not attempt to remove the sides, they will not separate
from the sole with the screws removed. The iron clamping is achieved
by a four-linkage mechanism. These components are CNC machined
from solid aluminum and anodized creating a beautiful finish that is
almost as hard as a diamond.
Fig. 2: Iron Geometry
Fig. 3: Cutting Angle Geometry
The plane sides have been “skeletonized” creating a harmonious
design that differs greatly in appearance from the traditional block
planes based upon early European designs. The HP-9v2 Dual Angle
Block Plane is truly a unique and fun-to-use tool that will meet the
needs of the most demanding users.
The Iron
The HP-9v2 Dual Angle Block Plane features an A2 tool steel iron which
has been hardened to Rockwell 60-62. A2 is an air-hardened tool steel
which contains a small percentage of chromium and molybdenum for
added durability in cutting hard or soft woods.
The supplied iron features bevels of 30° (25° primary bevel with a 5°
micro-bevel) and 35° (30° primary bevel with a 5° micro-bevel). The
lower angle bevel is longer than the higher angle bevel, this will help
you to determine which angle you are using by sight.
When the iron is bedded at 12°, the effective attack angles are either
42° or 47°.
Fig. 4: Iron Clamping Mechanism in the Unlocking Position
The 42° low attack angle is preferable when planing end grain and for
straight grained woods. The higher 47°attack angle (35° plus 12°
degrees) is typically used for hardwoods. Feel free to experiment!
Sharpening
A honing guide is highly recommended to sharpen the iron if you are
not skilled in hand sharpening. Always use the magnetic iron guard on
the end not being sharpened to prevent accidental injury.
The iron included with the HP-9v2 Dual Angle Block Plane has been
precision lapped to a .5 RMS finish. A typical glass mirror is a .5 RMS.
There is no need to lap the back for flatness.
We recommend using a leather strop to remove any burrs created by
sharpening micro-bevels. Lapping the back of the iron on a sharpening
stone will produce scratches that degrade the factory lap.
The Iron Clamping Mechanism
The HP-9v2 Dual Angle Block Plane features a unique, non-traditional
iron clamping system. It is important to understand how to adjust this
mechanism without damaging the plane body or components.
The iron clamping mechanism is controlled by the polished cap. When
raising the cap, the clamp arm lifts out of the way unlocking the iron
for removal. Moving the cap downward until it snaps will tighten the
iron.
Bevel up irons only need a small amount of pressure to keep the iron
bedded without chatter during cutting. When the iron clamping is
properly adjusted, the iron clamping mechanism will allow for both
iron cant and depth adjustment without unlocking the mechanism.
The iron clamping mechanism is adjusted at the factory. If it needs
adjusting, please follow the steps below to prevent damaging the
plane:
1.Pull up the cap to lift the clamp arm.
2.Turning the iron clamping knob counter-clockwise to fully loosen
the iron clamping.
3.Install a iron into the plane body and push down the cap as far as it
will go.
4.Turn the iron clamping knob clockwise until you first feel resistance.
5.An additional quarter turn of the iron clamping knob will tighten
against the iron. Additional quarter turns may be required to achieve
the optimal tightness which does not allow the iron to cant, or shift in
use.
DO NOT OVERTIGHTEN THIS MECHANISM AS YOU CAN DAMAGE THE
CLAMP ARM.
A bent clamp arm is a sure indication that the tool has been abused
and is not covered by warranty.
Iron Removal and Installation
CAUTION: The iron is sharp, take care when handling the iron to
prevent serious injury.
Please follow the steps below to remove the iron:
1.Fully open the mouth by loosening the front tote and sliding the
throat plate all the way forward and tighten. This helps to prevent
nicking the iron on the throat plate.
2.Lift the cap until the clamping mechanism is raised to its highest
position.
3.Hold the plane in one hand with your hand on top and your index
finger on the iron. Turn the plane upside down and the iron can be
safely removed as you allow it to drop into your palm.
Please follow the steps below to install the iron:
1.Mount the magnetic iron guard on the end that will not be used.
2.Insert the iron by introducing the protected end first.
3.Slowly lower the iron onto the index pin.
4.Push down the cap to tighten the iron.
Iron Adjustment
Both cutting depth and cant (iron angle) can be adjusted by the lead
screw under the cap. However, in use we find it much easier to adjust
the cant of the iron with your index fingers through the pockets in the
plane sides.
Adjusting Cutting Depth
The lead screw has 2 threads per millimeter. One full revolution
clockwise will increase the depth of cut by 0.1mm (0.004”). Decrease
the cut depth by rotating the lead screw counter clockwise.
There are five semi-circular cuts milled around the lead screw knob.
These serve two purposes, it is easy to grip and combined with the
knurled sections between each of the five cuts, the lead screw
becomes a base 10 form to achieve incredibly small incremental
adjustments.
Fig. 5 Adjusting Cut Depth
Fig. 6: Adjusting Iron Cant
CAUTION: Always be careful to avoid crashing the iron into the
throat plate.
Adjusting Iron Cant
The cutting edge of the iron is typically canted for two purposes; to
create uniform shaving thickness or to create a non-uniformed shaving
thickness. The former is needed to correct for sharpening error, and
the later to compensate for the tendency of the shaving to be heavy on
the operator side of stock.
To cant the iron, flip the plane to a sole-up position, move the lead
screw side to side, then sight along the sole to check if the setting is
correct for you. You may find however it is easier and more precise to
adjust the cant by using your index fingers through the cutouts in the
plane sides.
Iron Depth
Rotating one knurled section to one of the semi-circular cuts next to it
will increase/decrease the cut depth by 0.01mm.
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2
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