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Message No. 26438, Started by mcneilinstruments on 12/26/21

I’m trying to drill a hole through a steel plate, approx 5mm thick, I’ve started with a smaller bit and then changed to a bigger one, this went through quite good, but, I need the hole to be slightly bigger, enough to get a 10mm bolt through. I therefore changed the bit to another, slightly bigger but when I try to drill into the hole the drill is literally bouncing off, I’ve given it a few goes but it continues to happen.
Any help where I’m going wrong would be greatly appreciated.

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Follow-up Messages (2)
That's nice.
No. 26615, Posted by night_fury1212 on 05/10/22, 05:34 PST.
No. 26598, Posted by oliversbrookss on 04/26/22, 16:23 PST.