Molded Blanks/Pressings
Molded Blanks or Pressings are blanks formed by manually/automatically pressing softened glass into a mold to form your required shape/size. The tolerances of our pressings are shown on the table below.
When specified, pressed blanks can be manufactured to your tolerances. We ask that you specify the pressed blank size including allowance for grinding of the diameter, center thickness and curvature when placing orders.
| Outer Diameter (mm) | Tolerance of Outer Diameter (mm) |
Tolerance of Thickness (mm) |
|---|---|---|
| Less than Φ 12 | ± 0.10 | ± 0.4 |
| Φ 12 and more ~ Less than Φ 40 | ± 0.15 | ± 0.3 |
| Φ 40 and more ~ Less than Φ 60 | ± 0.20 | ± 0.3 |
| Φ 60 and more ~ Less than Φ 90 | ± 0.25 | ± 0.3 |
| Φ 90 and more ~ Less than Φ150 | ± 0.40 | ± 0.4 |
| Φ150 and more ~ Less than Φ300 | ± 0.50 | ± 0.5 |
Video Downloads
Videos of the Molded Blank process are available for download. (To save the file to your computer, right click the link below and select "Save Link As" or simply "Save As".)