Gareth J
Member
- Messages
- 3,334
- Location
- North Cornwall
Not saying you are but seam welded box is awkward to drill through if end up drilling through the seam from the inside. Has a habit of pushingsmaller drills off to one side. Sometimes checking which way up the box is before drilling can let you choose, though sometimes it's inevitable.I think things will improve when my new glasses arrive.
I've been center punching but made the mistake yesterday of drilling through 2 sides of a box section at once with the drill bit not completely aligned with the punch. Other side a couple mm out and written off.
Shall make a center pointer, but I'm amazed it isn't possible to just buy one.