| ??? 04/28/12 02:16 Read: times | #187264 - Carbon steel? Responding to: ???'s previous message | 
| I thought carbon steel drill bits was not used for drilling because of the big wear from the fiberglass. Aren't you using tungsten-carbide bits? | 
| ??? 04/28/12 02:16 Read: times | #187264 - Carbon steel? Responding to: ???'s previous message | 
| I thought carbon steel drill bits was not used for drilling because of the big wear from the fiberglass. Aren't you using tungsten-carbide bits? |