MattCom
Take a breath!
- Joined
- Jun 25, 2007
- Location
- East Phatchogue, NY
A steel grill is usually made of welded wire or rod stock. Expanded metal mesh is made w/o welding. It starts with rolled plate that is slit. The interupted, alternating, parrallel slits form a diamond shaped holes when the sheet is expanded (stretched wider). It is not necessarily perfectly flat, due to the expansion (one side of the diamond is low, the other high), but this can be pressed back out.
It's actually really neat how they make it... I spent my formative years in a metal shop... now we just send everything to CHINA!