Annealing & Finishing

Diamond File

A diamond-coated file for shaping and smoothing glass once it is fully cold.

Annealing
Diamond File diagram
Specifications
Grit220 to 600
Length150 - 250 mm
CoatingElectroplated diamond on a steel blank
Typical life200 - 400 pieces depending on grit
UseColdworking only

Compatible glass types

Soda-lime Borosilicate Lead crystal

Compatibility assumes the tool is rated for the working temperature of that glass family. Check the maker's documentation before use.

Overview

Cold glass can be worked with diamond abrasives without any thermal risk at all. A diamond file removes material fast enough to correct a rim, ease a sharp edge or true up a flat, and because the abrasive is bonded to the tool the cut stays consistent until the coating wears through.

Safety notes
  • Glass dust from dry filing is a respiratory hazard. Work wet or with extraction.
  • Wear eye protection. Fine glass chips fly from a file.
  • A fully annealed piece can still break. Clamp work securely.

Using it well

Practical guidance
  • File wet. Water keeps the diamond from loading and stops dust.
  • Work along one direction only for a cleaner edge.
  • Replace the file when it starts to slide rather than cut. A worn file polishes.

What to look for

  • Electroplated diamond that cuts consistently
  • Flat, half-round and round profiles
  • Comfortable handle that stays secure when wet
Related

Tools used alongside the diamond file

Annealing Oven diagram

Annealing Oven

A front-loading chamber for bringing finished pieces down through the annealing range under control.

Annealing
Kiln Controller diagram

Kiln Controller

The programmer that executes a ramp-and-hold schedule and holds the furnace to it.

Annealing
Annealing Kiln diagram

Annealing Kiln

A small top-loading kiln used for beads, small sculpture and single-piece annealing.

Annealing
Annealing Controller diagram
3D

Annealing Controller

A multi-segment programmer for executing a full annealing curve from heat to room temperature.

Annealing

See the annealing & finishing workflow

Read the category overview, or jump into the 3D Studio to see these tools applied to a live piece.

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