6 Attachment(s)
Challenge 20-21 Tony A - Krenov smoother
A bit late to this party but here we go.
Whilst I am keen to make a brass dovetail smoothing plane, I would like to improve my knowledge of planes before I do. And to that end I have chosen to build a high angle Krenov smoother. There are many build descriptions for this type of plane on the internet, construction is relatively simple and they are, if well made, a good user (apparently). My original idea was to build three with progressively steeper bed angles of 50, 55 and 60 degrees as a means of learning some of the subtleties of managing tear out.
Having seen the excellent and, in some cases, complex builds already shown here, I’m not entering this challenge with the intention of winning it. However, I do want to be in the draw for Ian W’s excellent marking out tools. As a novice in the art of plane making, I’m taking a contrarian approach to some others by building the simplest usable smoothing plane I can find.
Starting point was a Hock blade 45 mm wide with chip breaker. The back needed a little work on a diamond plate for some minor flattening and to remove the grinding marks then work through the grits (to 12000) to remove the scratches then a final polish with Autosol on a piece of pine. On the cutting edge I’ll work up to 2000grit at 30 degrees then polish the scratches off the cutting tip using Autosol at a bevel angle of 40 degrees. This removes the scratches from the stone on the very tip of the blade. A couple of the posts on this forum by DW in particular, have helped me take my sharpening to a new level.
Attachment 493312
There, pretty happy with that.
Next, choosing a piece of wood. Considering this is a utilitarian tool and a first build I wasn’t gong to waste any exotic timbers on it so I went for the next best thing.
This piece of wood ticked most of the boxes, it was well dried, showed minimal cracking and thus stable, straight grained and quarter saw although it revealed a bit of water stain when dressed.
Attachment 493313
With a 45mm blade I wanted the bed of the plane to be 47mm wide plus two 8mm cheeks for lamination on each side. Length of the plane was to be 240mm.
Wood cut and dressed.
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The bed of the plane was cut to 55 degrees on the table saw, trimmed up with a finely set plane and the slot for the chip breaker screw cut with a router. I clamped a wooden fence to my bench as a guide for the router.
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