Category Archives: By Hand & Eye

Meet the Author: Jim Tolpin

In early March 2017, Jim Tolpin woke up in the middle of the night with a revelation: He finally understood where trigonometry comes from. “I was actually just working on that when you called,” he says. “And I actually think … Continue reading

Posted in By Hand & Eye, By Hound and Eye, Uncategorized | 16 Comments

Does This Entasis Make me Look Fat?

Well no, dear, the curvaceous tapering just makes you look muscular. Or maybe it’s just an optical illusion. Or maybe the builders knew that the swelling, though slight, imparted a bit more strength to the column. But let’s not get … Continue reading

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The Degree to Which Your Angle Lies

Here’s an old school carpenter’s (or landscaper’s) method of laying out a line, such as a foundation form or a hedge row, to a specified angle. The tools needed are simple, primitive even: A length of rope marked at a … Continue reading

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Hexagoned!

We (and our kids) were all inoculated with enough Geometry during middle school to “know” the Pythagorean theorem. You know, the one that enables us to rattle off:  “A squared plus B squared equals C squared.”  But that particular manifestation … Continue reading

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Plumbing the Mystery of the Mason’s Medal

In this sketch I did of a Masonic “Past-Master’s Jewels” medal,  notice the representation of the pythagorean theorem. It is reported that its presence on the owner’s medal indicates that person was what we would likely now call a crew … Continue reading

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Waking up Your Eye

This is an excerpt from “By Hand and Eye” by Geo R. Walker and Jim Tolpin. On the southern shore of Lake Erie lies a narrow strip of cottonwood bramble called Magee Marsh. It’s the last bit of shelter for … Continue reading

Posted in By Hand & Eye | 11 Comments

Sine Curve Tutorial

To develop the curves in the various brackets – here the support for the back fence on the lid of a desk – I followed the ancient practice of melding arcs of a circle along a straight line.     … Continue reading

Posted in By Hand & Eye, By Hound and Eye, Uncategorized | 2 Comments