"... but bronze is more versatile and they might have had chisels, adzes, or even saws and drills."
Axes definitely. Chisels I think so. Adzes possibly. I don't think any bronze saws or drills have been found though, certainly not from 2500 bce. Planks recovered from this time are split and drills where probably stone tipped.
Within the next two weeks I am visiting the museum in Longford where they have a stretch of Bronze Age 'togher' (wooden road across a bog) preserved. I'll have a good look at the construction methods used there. Obviously it won't tell us what they could have done in 2500 bce, but it will tell us what the couldn't do in 200 bce.
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