Hand plane making in the UK has a rich history dating back to the 16th Century, with wooden planes being the dominant form before the industrial revolution. The earliest documented professional planemaker was Robert Hemmings on 1676.
Timber is carefully selected for grain direction and seasoning. It is dimensioned and marked out. The mortise is then chopped out and detailed using traditional plane makers tools, and a wedge is cut and made to fit the mortise. The cutting iron is made from steel, and the then the iron and wedge are fitted to the body so they are a perfect match. Depending on the type of plane there may be a handle or additional fences added. The plane is then tested and chamfered and details.
In terms of making individual or very small batches, wooden planes are typically easier and quicker to produce than infill planes, and as such are priced accordingly. Both can be made either using only hand tools or with a mixture of machine tools and hand tools, but it is more advantageous to use engineering machinery for infill planes because of the resistive nature of metal. Industrial planemaking on a larger scale is carried out by casting the body from iron or bronze and subsequent machining operations before a final assembly of all machined components. Very little handwork is involved in this scale.
Infill planes are called so because of their construction. A metal shell is formed from thin steel, brass or bronze before being ‘infilled’ with wood, which supports the blade and forms the ergonomics of the tool. These metal plates are joined to one another via dovetails, which are cut either by hand or more typically on the milling machine. When the two sides are jointed to the sole (bottom) the entire shell is permanently fixed by peening the dovetails, a type of cold forging. The wooden infills are held in place by rivets. This method is superior to casting for longevity because if done correctly, hardly any distortion will occur in the shell, whereas a cast body will invariably warp as it seasons over a century or so.
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