Abrasive and Polishing Threads for Jewellery

What are abrasive threads?

Reaching Where Files and Sandpaper Can’t

Abrasive threads are flexible threads coated with an abrasive. They are threaded through holes and openings in the piece and pulled back and forth to sand and polish surfaces that are difficult to reach with files, sandpaper or rotary tools.

They are used for the inside of sawn patterns, filigree, loops, chain links and stone settings, among other things – and save a great deal of time in finishing.

Pierced and sawn patterns
Filigree and fine details
Loops, holes and links
Settings and inner edges

Rullar med slip- och poleringstrådar för smyckestillverkning

Three Grades

From Coarse Sanding to High Gloss

Work from coarse to fine grades for the best results. Each series is available in several diameters.

S Series · Hard

Silicon Carbide

The hardest grade, with fast material removal. For coarse sanding and for removing saw marks, burrs and unevenness.

Abrasive threads S1–S12, Ø 0.3–3.8 mm
Abrasive tapes ST1–ST5

A Series · Medium

Aluminium Oxide

The intermediate step that smooths the surface after coarse sanding and prepares it for polishing.

Abrasive threads A5–A11, Ø 0.8–2.4 mm
Abrasive tapes AT1–AT5

C Series · Fine

Iron Oxide

Polishing threads and polishing tapes for final polishing and a smooth, glossy surface.

Polishing threads C1–C10, Ø 0.3–2 mm
Polishing tapes CT1–CT2

Brochure

Abrasive & Polishing Threads – the Full Range

The brochure covers all three series – silicon carbide, aluminium oxide and iron oxide – with item numbers, type (thread or tape), diameter and grit size. Handy to keep at the workbench or to pass on to your purchasing department.

PDF, 2 A4 pages
Item table for the S, A and C series
Free to print and share

Download the brochure (PDF)

Negarin brochure Abrasive & Polishing Threads, page 1: silicon carbide, aluminium oxide and iron oxide threads

Negarin brochure Abrasive & Polishing Threads, page 2: tables of abrasive and polishing threads and tapes

Step by Step

How to Use Abrasive Threads

01

Choose the diameter

Choose a thread that matches the size of the opening – thinner threads for small holes and fine details.

02

Secure the thread

Pass the thread through the opening and tension it, for example in a holder or a saw frame.

03

Sand

Pull back and forth with even strokes and change the angle to reach the whole surface.

04

Move to finer grades

Continue with the medium and fine grades until the surface is ready for final polishing.

Products

Abrasive Threads and Tapes