https://www.youtube.com/watch?v=NT_8mNepkPw
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I've always just used a step drill (Unibit).
Second hole isn’t quite straight. Could be size of the drill makes a difference. I’ve seen this before. Nice idea.
I'm not sure what "neat" and "straight" mean in this context but the larger 15 mm hole is distinctly trilobal, not circular.
Use of a step drill, as suggested, is definitely preferable. Not only will you get a circular hole, but it will be much easier to place it precisely; precision locating on wood is an oxymoron.
I just needed to use wood blocks from a denser wood.
You can precisely locate in wood, it takes a pilot hole. Through another piece of wood. Do it rather regularly up to 6 inch diameter when I use large hole saws.
This is a method that works, and not all required hole sizes are available on step drills. I have quite a few of those to:)
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Thanks liberal! We've added your Sheetmetal Drilling Method to our Drilling and Drill Presses category,
as well as to your builder page: liberal's Homemade Tools. Your receipt:
<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="https://www.homemadetools.net/homemade-sheetmetal-drilling-method"> <img src="/uploads/251991/homemade-sheetmetal-drilling-method.jpeg"/> </a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="https://www.homemadetools.net/homemade-sheetmetal-drilling-method">Sheetmetal Drilling Method</a> <span> by <a href="https://www.homemadetools.net/builder/liberal">liberal</a></span> </div> <div class="tags">tags: <a href='https://www.homemadetools.net/tag/sheetmetal'>sheetmetal</a>, <a href='https://www.homemadetools.net/tag/drilling'>drilling</a> </div> </div> </div> </div>
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