Gallery, Projects and General > How do I??
Enlarging Holes in Thick Plate
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awemawson:
I need to enlarge some 22mm mounting pin holes in my Twose 276 Hedge cutting Flail to take 1" pins

This is the Flail:
awemawson:
And these are the mounting lugs with the holes in question:
RussellT:
Turn some bushes for the holes on the tractor.

Russell
porker:
Just lift it onto the mill and bore....

But seriously I think this is a job for a mag drill I would have thought. Don't know how accurate they are though so you may need to drill oversize and make some bushes.
tekfab:
Do you have access to a mag drill ? If you're careful at the start then it'll do it no problem.  If you're not confident then you can tack weld a plate behind the hole to locate the spring centre.
Mike
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