Curvolutions now offers a stair riser that is made from its Kerfkore product line
Patent #5,618,601; #5,232,762; #5,824,382
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Product Specifications
 Product Description
The riser is constructed with a veneer face and different core options. The riser is designed for use on starting step applications where a bull nosed end is desired to provide a platform to mount the tread and the banister railing.
Product Characteristics
The riser is available in an 8" height with bendable end/ends to form the needed radius. The height can be reduced by edging on a table saw to a smaller width if needed. The product is shipped flat and by the use of a shaping rib can be bent and shaped into the desired form.
Assembly Methods
The riser is formed into the desired contour by the use of a curved forming rib. This rib should be machined to the correct shape and the riser then applied to this rib. Sometimes the use of a dado or rabbet is used to locate this rib for attachment. The rib should be glued, clamped, and possibly pin nailed into place until dry.
Bending Capabilities
The product is designed to form a maximum diameter of 13" or it can be bent down to a 8" diameter if needed. This diameter is determined by the size of the bull nose needed for the particular application.
Face Treatments
The following veneer faces are available: Oak, Maple, Cherry, and Mahogany.
Core Materials
Particleboard is the standard core material. Optional core materials include plywood and MDF.
Handling and Storage
Care should be taken in handling all materials. The length of the riser may require two people to safely transport the material. Always pick up the riser with the ribs on the bottom so the panel will bend towards the intended curve. Bending opposite from the intended shape is not recommended. Always practice good storage methods by keeping flat until needed.
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