Tom_G
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Tom_G replied to the topic Calculating the Sharpening Angles for Blade Positioning in the forum Thoughts/Theories/Science Related to Sharpening 2 years, 2 months ago
Ahh, so your method seems pretty quick as a way to get a near optimally uniform sharpening angle, since, as you point out that angle is uniform if the edge of the knife traces out part of a circle about the pivot point -and- that the sharpening angle is uniform along a flat edge even if its tilted. I came across a discussion, in my…[Read more]
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Tom_G replied to the topic Calculating the Sharpening Angles for Blade Positioning in the forum Thoughts/Theories/Science Related to Sharpening 2 years, 2 months ago
Got it — thanks and understood. I am just a newbie with a computational/design bent for whom you have correctly identified a big part of my justification for doing this — its fun!
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Tom_G replied to the topic Calculating the Sharpening Angles for Blade Positioning in the forum Thoughts/Theories/Science Related to Sharpening 2 years, 2 months ago
Marc,
Thanks for digging up the info! The features of that curve is part of the calculation above. I am pretty sure the graph is of the formula Offset = Height * atan(a fixed angle) + (1/2 of the width of the diamond block). It incorporates the width of the block as part of the analysis to gives you how far off the center the ball sho…[Read more]
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Tom_G replied to the topic Calculating the Sharpening Angles for Blade Positioning in the forum Thoughts/Theories/Science Related to Sharpening 2 years, 2 months ago
So I have some preliminary results. These are for the following (inexpensive) knife.
I have calculated the real sharpening angle for the various positions across that blade for a number of different mounting spots. The mounting spots are 2″, 2.25″ 2.5″ ….. up to 4″ from the blade start (right side of the image). The sharpening angle is ad…[Read more]
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Tom_G replied to the topic Greetings from Columbus — and request for posting helplp in the forum Welcome Mat 2 years, 2 months ago
Nope its just a trial posting. The image is of a cell phone picture of a knife that has been subjected to an edge finding program as a first step toward converting it into x,y numbers for analysis. Those letters you see are whats printed on the red folder I used as a background, The edge find does pretty well with those.
Thanks again for t…[Read more]
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Tom_G replied to the topic Greetings from Columbus — and request for posting helplp in the forum Welcome Mat 2 years, 2 months ago
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Tom_G replied to the topic Greetings from Columbus — and request for posting helplp in the forum Welcome Mat 2 years, 2 months ago
Marc H,
Thanks for answering. But the issue is that I am never offered that second step. (i.e. click it so it’s marked with a check mark in the square”) I can try to add my image to the image gallery, but it fails and tells me: “Sorry, you are not allowed to attach files to this post.” Since it never makes it tot he gallery, I cannot insert it…[Read more]
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Tom_G started the topic Greetings from Columbus — and request for posting helplp in the forum Welcome Mat 2 years, 2 months ago
Hi All,
I am a new Wicked Edge owner/user and have found that this forum offers a wealth if information and guidance! Thanks!!
I could use some help though. I have made a post under another topic, — but I have found that I am not allowed to add pictures/jpegs to posts. If I try using the ‘add media’ button, I am steered to an ‘add media…[Read more]
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Tom_G replied to the topic Calculating the Sharpening Angles for Blade Positioning in the forum Thoughts/Theories/Science Related to Sharpening 2 years, 2 months ago
airscapes — thanks for touching base, and for the info and guidance about sharpening angles. I am thinking that I did not introduce that first post very well. Rather than determining an angle to use for a blade, the calculation is aimed at finding the variation of the sharpening angle for each portion of the blade. My understanding is that…[Read more]
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Tom_G started the topic Calculating the Sharpening Angles for Blade Positioning in the forum Thoughts/Theories/Science Related to Sharpening 2 years, 2 months ago
I have a knife that is mangled a bit, so is unlikely to yield a good answer using the sharpie marker approach. So I have been thinking about a computational method for optimizing blade position.
I have determined that the sharpening angle can be determined analytically from the blade profile, where X and Y are the mounted horizontal and…[Read more]
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Tom_G became a registered member 2 years, 2 months ago