|Mujingfang (Hong Kong style) HSS|
|Microbevels front and back.|
|Use a jig.|
|Copyright (c) 2002-15, Brent Beach|
Mujingfang make a series of wooden planes, often from nice looking tropical hardwoods, which have High Speed Steel blades.
I bought this plane from Japan Woodworker. The online catalog says the blade is "A2 High Speed Steel". The A2 designation refers to a High Carbon Steel, not a High Speed Steel, so at least part of this description is wrong. When I asked a Japan Woodworker representative about the blade, he suggested it was in fact A6 steel (new steel type to me).
Unlike other Mujingfang planes, this one has a more or less normal cap iron for a wooden plane. The cap iron has no holes for a lever cap screw or depth adjust. The blade does have a slot almost suitable for a Stanley plane and can be used with a Stanley cap iron, once the slot is extended closer to the edge.
As of December 2007 Japan Woodworker still lists this plane in their online catalog. The plane and blade cost only $28.85, less than most replacement blades alone. If you want a very good blade in your #3 or #4 1/4 Stanley, this is the place to get it.
Here is a picture of the iron, modified for use in a Stanley plane. This is the cap iron that comes with the blade. If you want to use the blade in a western plane, you will have to use the western cap iron - which should not be a problem.
Not a pretty sight! The yellow strip is the solder line - where the High Speed Steel bit is attached to the milder steel body. This is enough steel for a lot of planing.
I drilled and filed the bottom of the slot so the blade would fit in a Stanley plane. In Stanley style planes, the maximum length from the bottom of the slot to the edge is determined by the placement of the lever cap screw.
The upper end of the slot also has to be filed to allow the Lateral Adjuster circular widget to fit.
These modifications do not affect the usability of the iron, with its cap iron, in the wooden plane.
Shows the excellent edge durability, somewhere between M2 High Speed Steel and A2 High Carbon Steel blades.
This is a very inexpensive blade -- the plane and blade together cost less than most replacement blades.
|Con||Has to be the ugliest blade I have ever seen. Fortunately, all the nasty bits are hidden when the blade is in the plane.|
|February 5, 2005.||While designed for use in a wooden plane, this blade was modified for use in a Stanley plane. The test was done using a "between the wars" Stanley #5-1/4 - the plane I use for testing all 1-3/4" blades that will fit in it. This blade is thicker than standard Stanley plane irons at 0.097", but fits in this plane.|
|February 26, 2005.||
Standard test sharpening, but rather than use the blade in the #5-1/4 in which I normally test 1-3/4" blades, I used the same #604-1/2 used to test the Stanley HSS blade.
This is one of a series of test to see if the blade used in testing has any effect on blade performance. These are both pretty good planes -- perhaps I should have chosen a worse plane for this test.
The images from the second test are a little larger and a little clearer than those from the first test. During February 200 I learned that it is possible to acquire images from the QX3 other than through the software that comes with the microscope. The changes are explained in the QX3 pages.
The faq contains an explanation of the term pixel.
|After 100 passes along 4 foot douglas-fir board.||
|After 200 passes.||