JUMA is a high grade, modern raw material for the manufacture of components and works of art. JUMA consists of a mixture of different mineral base materials compounded with a resin component.
The essential characteristics of JUMA are:
excellent mechanical machinability i.e. for drilling, milling, grinding and polishing,
minimum breakage risk due to high coefficient of elasticity and high elongation,
high-quality surface due to high surface hardness and minimal abrasion losses,
resistant to all conventional substances such as cleaning agents, oils, greases, weak / medium acids and bases,
very low water absorption (hydrolysis resistant). - possibility of thermal moulding in boiling water,
can be polished or lacquer coated to manufacture polished or matt surfaces,
pleasant to the touch due to good thermal properties.
Applications of Juma® are:
Knife making (here knife handles)
Turning material e.g. as a pen blank for pen manufacture
Jewelry manufacturing and design
Restoration of furniture, art and cultural antiques with ivory inlay
Billiard cue manufacturing, used as ferrule and for inlays
Musical instrument construction as decorative rings, mouthpieces, piano keys, guitar bridges, and many more
More information is also provided in the JUMA product description.
Note: The Structure of this product is all through the material, because of the pigments the top is a bit brigther and the underside slightly darker. Each piece is unique.
I have been using it for several years and am very pleased. It is processed perfectly on a lathe and polished perfectly. During the entire period of use, no defects were encountered. The quality is high.
