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Old 15th Mar 2021, 10:44 pm   #16
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
Posts: 18,364
Default Re: Enlarging an existing hole in a steel chassis.

I keep a set of good quality tapered reamers, the long stepless ones. Operating them by hand is fine, food ones are sharp and will cut gently without grabbing. This way I can monitor the centring as I go and a little tip of the tool will steer it's progress so I can control the cutting so it is even around the perimeter.

Brilliant tools. You can smoothly ream a quarter inch starter hole out to an inch or more without feeling like you've run a marathon. The ability to cut is one thing, the ability to control the cut is even more important.

Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done
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