lehr
1
9.9
An oven that slowly cools hot glass so it does not crack
- noun
- /lɪr/
- Specialized
:
lehr
- The glass artisan placed his newly shaped vases into the lehr to ensure they cool evenly.
Examples
-
In the factory, workers carefully monitored the temperature inside the lehr to prevent any glass from cracking.
-
After shaping the glass, the craftsman let it rest in the lehr for several hours.
-
Dick Lehr, same.
Synonyms
1
8.8
A machine that heats then slowly cools materials like metal and glass to make them stronger
is specifically a long oven for slowly cooling shaped glassware to prevent cracking
Surface Forms
Etymology
The word lehr comes from German, where it was the name for the long oven glassmakers used to cool hot glass slowly and evenly. Like a long kiln, a lehr lets glass 'relax' as it cools so it becomes stronger and is less likely to crack.