Lapping Glass - flat lapping a raised patterned square of glass and polish to full transparency - Case Study
Stage 1 (Lap) Equipment used:
- Kemet 24” lapping/polishing machine
- Cast Iron lapping plate
- Kemet Flatness gauge
- Kemox 0-800s
- CO-42 cleaning fluid
- 24” dycem faced pressure weight
Stage 2 (Polish) Equipment used:
- Kemet 24” lapping/polishing machine
- PSU-M polishing cloth
- Kemox 970BB
- CO-42 cleaning fluid
- 24” dycem faced pressure weight
| Process Breakdown | ||
|---|---|---|
| Stage | Media | Plate/Cloth |
| 1 (Lap) | Kemox 0-800s | Cast Iron |
| 2 (Polish) | Kemox 970BB | PSU-M |
Process for Lapping and Polishing Glass
Stage 1: One square of glass was placed inside the centre of a control ring on a flat cast Iron lapping plate, a dycem faced weight was placed on top, this is for quick fixturing in a production level, you would use a profiled out work holder for convenience and protection of parts. The machine was then cycled using Kemox 0-800s till the patterned face had cleaned up, this took 25 minutes. The glass was then turned over, the same methods were used but with a clean up time of 10 minutes. Glass was then cleaned off with Co42 cleaning fluid.
Stage 2: The cleaned glass was then placed into a plastic faced control ring and a dycem back weight was placed on top. The machine was cycled for 15 minutes per side with a PSU-M polishing cloth using Kemox 970BB. Glass was then cleaned with Co42 cleaning fluid.
Before Lapping Glass
After Polishing Glass
