Krenov Style Jack Plane

krenov jack plane

This is the first wooden plane I made. To built it, I followed the directions in Making and Mastering Wood Planes by David Finck. I was too lazy to make a cross pin as he describes, so I used a 12” oak dowel. The blade is a Hock iron that’s 1.75” wide. The wood is red oak.

The plane is laminated from 44 lumber. The board I used had been in my shop for several years, so it was well acclimated, but it had significant twist. I figured that it had been in my shop so long that the stresses would themselves out, but I was wrong.

After I built this plane, it moved like crazy. Every few days, the sole would be concave. When the sole of a plane is concave, the plane becomes “binary.” It will take no shaving at all or a huge thick shaving. Each time I flattened the sole, the plane would work sweetly again. After a few months, it settled down.

The dowel works as a cross pin, but it does significantly limit you access to the throat of the plane. In later planes, I tried using a brass cross pin, but I’ve settled on a Philly style plane instead.

Finck suggests flattening the sole using sandpaper on a flat surface. I had very little success doing that. The outside edges of the plane abraded much more quickly than the middle, so the plane becomes a banana quickly. I found using another hand plane to flatten the plane works very well. The rest of Finck’s instructions work great.

I decided I don’t like Krenov-style planes. There’s nothing to hold onto and the planes are hard to sharpen because they are so small.

Read about my other Planemaking.

Daddy,  Can We Play in the Workshop?

If hand tool woodworking is your passion, you may enjoy my children's book, Daddy, Can We Play in the Workshop?