How to Choose the Right Zirconia Sintering Furnace

The furnace decides whether your £30 disc becomes a 1200 MPa crown or a 900 MPa one. Choose on program control, not on chamber size.

What actually matters

1. Program segments: you need ≥8 steps to run a proper debind + sinter; 4-step furnaces force compromise.
2. Thermocouple accuracy: ±5 °C is the floor for shade stability.
3. Uniformity: ask for the hot-zone map; >15 °C spread means shade variation.
4. Logging: a furnace that records every cycle proves your process.

Capacity maths

Count a nightly batch; a 90 mm tray holds ~12单层 crowns, stacked doubles it. Buy the tray that fits the batch, not the brochure.

See the AI Furnace Series with 16-segment programs and cycle logging.

What to compare

Two questions

1. How many cases per day — one tray or staggered three?
2. Do you press ceramics too, or zirconia only?

Match the chamber to your daily load; an oversized muffle wastes energy and time. See the AI Furnace Series.