How Bone Buttons Are Made – Raw Material, Processing and Finishes

Polkom
How Bone Buttons Are Made – Raw Material, Processing and Finishes

How are bone buttons made? Cattle bone is cleaned, degreased and bleached, then cut into plates from which blanks are cut. These are turned to the desired profile, the holes are drilled, and the buttons are sanded and polished. Finally a finish can be added – dyeing, burning, toning or laser engraving of a logo.

The raw material

The dense wall of long bones, most often from cattle, is used for buttons. It is a by-product of the meat industry. Only part of the bone is suitable – the part with sufficient thickness and density. The porous ends and cavities are not suitable for buttons, so the choice of raw material determines which sizes and profiles can be made. Large, thick buttons require the densest sections and are harder to produce.

How bone buttons are made: the stages

  1. Cleaning. The bones are mechanically cleaned of tissue residue.
  2. Degreasing. The bone is boiled or treated to extract the fats. Without this stage the buttons yellow unevenly and smell.
  3. Bleaching and drying. The material is bleached to an even light tone and dried to stabilise it.
  4. Cutting into plates. The bone wall is cut into strips and plates of even thickness.
  5. Cutting blanks. Round discs slightly larger in diameter than the finished button are cut with a tube cutter.
  6. Turning. The profile, rim, recess, dome or shank is shaped on a lathe or automatic machine.
  7. Drilling. The holes are drilled using a template, equally spaced, and their edges are smoothed.
  8. Sanding and polishing. The buttons are tumbled in drums with abrasives and then with polishing media to a soft sheen.
  9. Finish. Dyeing, burning, matting or engraving.
  10. Sorting and inspection. Buttons with cracks, stains, uneven holes or a strong deviation in tone are removed.

Finishes and effects

Polished natural

The classic look: light bone with a soft, porcelain-like sheen. It emphasises the natural material and suits shirts, summer jackets and knitwear.

Matte

The buttons are sanded without a final polish or are additionally matted. The surface is velvety, without reflections – suitable for casualwear and workwear.

Dyed

Bone takes dye well. The buttons are immersed in dye baths and take on a tone from light beige to dark brown, grey, navy or black. The natural structure remains visible through the dye. With dyed buttons it is important to check colour fastness in the wash.

Burnt

Through controlled heat treatment, brown and dark patches form on the surface, sometimes with a "tortoiseshell" effect. Every button is different. Burnt bone buttons are typical of tweed jackets, coats and vintage collections.

Toned (aged)

A light yellowish or brownish tone that imitates the natural patina of old buttons. Used for replicas and retro styles.

Engraved

The laser applies a logo, lettering or ornament. The grooves can be filled with paint for stronger contrast. You will find more about the technique in the engraved buttons category.

Table: finish and application

FinishLookSuitable garments
Polished naturallight, glossyshirts, summer jackets, white knitwear
Mattevelvety, no sheenworkwear, casualwear
Dyeduniform colourjackets and coats matched to the fabric
Burntpatches from brown to darktweed, corduroy, vintage
Tonedcreamy, agedreplicas, retro shirts
Engravedlogo or ornamentbrands, uniforms

What determines quality

  • Density of the raw material – porous bone breaks and absorbs dirt.
  • Good degreasing – prevents uneven yellowing.
  • Hole accuracy – equal spacing for machine sewing.
  • Rounded hole edges – the thread is not cut.
  • Even finish – dye without blotches, polishing without scratches.
  • Sorting by tone – especially important for natural buttons.

Natural variation within a batch

Even with precise processing, bone buttons are not completely identical. The density and colour of the raw material vary, and some buttons show more dots and lines than others. This is a sign of a natural material, not a defect. For styles where uniformity matters, the manufacturer can sort by tone or choose a dyed finish.

Manual and machine processing

Traditionally, bone buttons were made on hand lathes and every detail depended on the craftsman's skill. Today the main operations – cutting, turning and drilling – are done on automatic machines, which guarantees the same diameter, thickness and hole spacing across the whole batch. Manual work remains in sorting, in some decorative finishes and in quality control. For series garment production this matters: the button-sewing machine requires accurate, repeatable parameters, and the natural look is preserved by the material itself, not by irregularities in processing.

Bone and horn – the difference in processing

Horn is processed in a similar way, but before cutting it is often softened with heat and can be pressed. Bone is not pressed – it is processed only mechanically, so its shapes depend on the thickness of the raw material. If you are looking for a natural material with dark streaks, see the horn buttons.

Price

The price depends on the size and thickness (larger buttons require denser raw material), the complexity of the profile, the finish, engraving, sorting by tone and the quantity. For a specific figure, send a request for a quote with the model parameters.

You can browse the available models in the bone buttons category.

Bone buttons from Polkom

Polkom is a Bulgarian manufacturer of accessories for fashion, furniture, footwear and bags, based in Sofia, with over 30 years of experience. We offer bone buttons in natural, dyed and burnt finishes, engrave logos and make samples. Send an inquiry via the contact page.

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FAQ

Frequently asked questions

What are burnt bone buttons?
These are buttons on whose surface brown and dark patches have been formed by controlled heat treatment. The effect resembles a natural patina or a tortoiseshell pattern, and every button is different. Burnt bone buttons are popular for tweed jackets, coats and vintage collections, because they echo the melange of rustic fabrics.
Why are bone buttons degreased?
Natural bone contains fats. If they are not extracted before processing, the buttons yellow unevenly over time, may have stains and an unpleasant smell, and the dye takes unevenly. Good degreasing is one of the main differences between a quality bone button and a poor one.
Can bone buttons be dyed to match the fabric?
Yes. Bone takes dye well and can be coloured in a wide range of tones – from beige to black, grey and navy. The natural texture remains slightly visible. For an exact match with the fabric, send a sample or a colour code and ask for a button test, including a colour check after washing.
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