Re: Low Angle Jack
Lyn J. Mangiameli
>I have the L-N LA smoother and Jack, and the Lee Valley LA smoother. I have also spent a fair amount of time with a prototype of the Lee Valley Jack.
I like all of these planes when they are used with multiple blades tuned to an effective cutting angle most appropriate for the task and wood faced at the time. Yes, what Chris has said is born out in others experiences (and specifically by mine).
There are some differences betweent the L-N and LV smoothers, mostly related to blade thickness (greater on the L-N), how far back the mouth is set (greater on the LV) and provision for lateral adjustment (possible on the LV but not on the L-N).
These same differences carry over to the Jack planes, but there are also additional differences between the Jacks. The Lee Valley version is longer, wider, has a wider blade, has a mouth set much farther back, has a mushroom style front knob, and has what I find to be the wonderful additon of fine screw adjustement of the mouth.Also available for it is a HA blade prepared for a 50 degree effective cutting angle when installed in the plane.
The L-N Jack has a thicker blade which is cryogenically treated (of debatable significance).
To may way of thinking, the two Jacks are really rather different planes and most suitable for slightly different work. I think the L-N version, with its lighter weight and smaller size is most suited as a LA Jack plane for working on smaller surfaces like trimming dovetail ends on the side of a drawer.
The Lee Valley version I consider to be more of a panel plane where it performs superbly for the smoothing of large surfaces. Here, the finely adjustable mouth (via the screw mechanism), lateral adjustment, the long area of registration prior to the mouth, and the greater weight that makes it easier to use it at high cutting angles, all make it very suitable for high angle smoothing. Simply put, used with an effective cutting angle of over 60 degrees, this plane (well at least the prototype I used) has provided some of the best surfaces I have ever achieved on difficult to plane cocobolo.
One could actually have both the L-N and LV interpretation of a LA Jack and find that, with just a few differences in set up, they fill almost totally different roles. Both are excellent and highly versatile planes with just the addition of an extra blade or two (or three).