Hi Everyone
GMC 420W Magnesium Palm Planer
Review

If you are a power tool junkie, like me, it's always great to get your hands on 
a practical and useful power tool to make those common woodworking tasks
a more simpler affair.

This is not to say a good hand tool is worthless. In fact, hand planes are very 
handy to have around the shop and on construction sites for fine-tuning
of lumber or joints, in their many forms. While the hand plane is often 
associated with fine woodworking, the hand power planer is more often found on
construction or building sites, but it too can be used for fine woodworking 
tasks.

Today we are looking at a power planer, but one with a little twist. The GMC 
Magnesium Palm Planer is smaller than your average power planer, fits in the
palm of your hand allowing one handed operation and offers something unique in 
the world of power tools.

The GMC Magnesium Palm Power Planer
The Palm Planer ships in a small-sized black plastic molded case. Naturally, 
this affords it good protection during transit, and consequently, it arrived
damage free and ready to go. This same case will offer good protection for the 
end user if they also transport it around from site to site, so it is well
worth retaining and using it. Inside you will find the planer itself, a 
full-color product manual, plus several accessories including;
* Blade spanner
* Chip extraction tube
* Spare drive belt
* Spare set of blades

This is a fairly stock-standard set of accessories for a power planer, except 
for the spare set of blades. This is the first planer I have acquired that
offers a full set of spare blades in the case. A nice addition and a good 
little money saver as quality replacement blades can consume a bit of petty cash
in the stores. Be aware however that these blades are not the standard 82mm 
size, only 60mm, so grab a set of spares with your purchase, or when you find
them in your retail outlet. They may be hard to find in a few years time.

The Palm Planer (Product Code: PPM) features a 420W motor. This is about half 
the power of a solid regular sized power planer, but given that this tool
does not take as much material off in a pass, due to its smaller blade and max 
depth cutting capacity, a larger motor doesn't seem warranted. Plus, to
have a small power tool such as this, you can't go too big in the power 
department, otherwise it is no longer a "small" tool. 420W of power proved to be
more than ample for all cutting tasks I engaged the tool in. Even on full width 
planing passes at close to maximum depth in dense hardwoods, the PPM did
the job with little trouble, although consideration to feed rate on harder 
woods needs to be taken into account. The PPM features a no-load speed of 14,000
RPM and combined with a two-blade cutterhead delivers smooth planing results 
with sharp cutters. The TCT cutting blades themselves are reversible so you
get double the life out of them over a normal single-edged blade set.

The power controls are located in easy reach of the thumb and forefinger. The 
switch lock release button is located up top (with the chevron markings).
The power on/off button is located below and lateral to this. To power up the 
tool the top lock switch must be push down/forward and held there while the
lateral on/off button is pressed to power up the tool. To turn off the tool you 
simply release the on/off button. The lock switch does not have to be held
down/forward once the tool has been turned on. Both switches have a rubber mold 
grip for better grip/control.

The PPM's body features a mix of light weight magnesium (belt drive cover, 
front control area) hardened plastic, and rubber overmolds for grip and comfort
throughout. Despite the light magnesium and plastic casing, the tool doesn't 
feel like a toy. It still weighs in at 1.9kgs, which does seem to be a 
comfortable
weight in the hand. Not too light to feel flimsy and vibrate excessively in 
use, and not too heavy as to make it unmanageable (and dangerous) with single
hand control. The whole tool features a smooth, slimline design. The motor 
housing, which is also where you grip the tool in the palm has a rounded barrel
shape that easily contours to the curve of your hand as you grasp the tool. In 
fact, the tool is very comfortable to hold and use.

A fully cast metal base is machined flat and was verified to indeed be flat by 
my shop straight edge. The fixed rear base is solid and flat while the 
adjustable
front base features numerous (3) V-grooves to allow edge chamfering to be 
achieved. Each V-groove is milled at a different depth too for versatility, to
mill a specific depth chamfer, or to use a different groove each time to even 
out blade wear by not using the same part of the blade with each pass. In
terms of depth capacity, the PPM can remove up to 1.5mm of material with each 
pass. The adjustable front base and depth control knob allows changes in
0.25mm increments with click stops for each 0.25mm setting. Maximum cutting 
width is 60mm, about 22mm less than a conventional full sized power planer,
but still more than enough for the majority of planing tasks, and certainly 
plenty for door edge planing and edge chamfering.

At the rear edge of the tool is a dust extraction port where the supplied 
shaving adaptor tube fits. You can use this to either guide shavings and debris
away from the user, or to hook up a shop vacuum hose for more efficient 
extraction. In use the dust extraction port works reasonably well. I won't say
very well as it can sometimes get clogged easily, particularly when taking full 
width passes on softer materials like pine. The curly shavings this softwood
sometimes produces can block the port, particularly if you make a planing pass 
too quickly, not giving the tool enough time to efficiently remove the mass
volume of shavings and debris it creates. The problem seems less evident on 
hardwoods, and almost non existent when chamfering or making smaller width
passes. In these instances the dust port works a treat.

A nice feature of this tool is the blade protection foot mounted on the back 
end of the rear base. It is a little pivoting foot that lowers under gravity
to provide clearance for the blade and cutterhead when the tool is put down on 
a work surface. This ensures the blade does not gouge your workbench, table
or concrete floor (!!!) when the tool is placed down and the cutterhead is 
still spinning. It readily pivots up and out of the way itself as you make a
planing pass and the edge of the timber pushes against the protection foot. 
This was a feature I first noted on some of Ryobi's power planers, and it has
proved very useful and handy, both protecting your work surfaces and your 
blades from damage. Thumbs up for that inclusion on the PPM!

In Use
In terms of use, the Palm Planer is not really used any differently to a full 
sized planer, except for that fact that is a one-handed-use tool. Planing
technique is similar to a full sized unit; there are very few differences in 
this regard. While a planer like this can be used for a variety of different
purposes, it tends to see most use in planing down door edges to fit a door 
opening, or to fix "stuck" doors or doors that have expanded over time and
no longer close properly. It is used for general width or dimension reduction 
on building or construction sites (in the woodworker's shop, this task is
often done by a dedicated thicknessing machine). The quick and easy chamfering 
a power planer offers is often preferred over a hand plane or block plane
by many, especially if your hand tools haven't received the sharpening 
attention they deserve in recent times! While the PPM can also cut rabbets on 
the
edge of timber, it is not specifically designed for it (no rabbeting fence 
included) and these must be done somewhat free-hand to start off with, then
there is a limited cut capacity for rebates because of the tools body design 
and shape.

In terms of use and practicality, I think that if you already own a power 
planer, there may not be a lot to offer you in this smaller unit, unless you 
have
a specific need or desire for a smaller portable power planer, or for 
one-handed use. If you do not yet own a power planer however, and are looking 
for
a starter or smaller unit for all those odd jobs around the home, or for quick 
chamfering of edges, then the PPM would indeed fit the task nicely.

Priced at around AUD$89 (street price as at February '07) it offers good value 
for money and basic features all packaged in a uniquely sized portable planer
with magnesium casing. It will probably not satisfy a trade user, but is ideal 
for the DIY enthusiast, home owner or occasional carpenter.
 GMC Website -
http://www.gmcompany.com



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