graphite
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graphite replied to the topic Looking for a new microscope in the forum Sharpener and Accessory Maintenance 6 years, 4 months ago
Marc, that makes sense re: handheld and direct contact with a mounted knife. What magnification can you focus at with direct contact?
More generally, what magnification do you find as most useful when using your scope during the sharpening process? Maybe a lower one for checking burr formation and a higher one for monitoring scratch…[Read more]
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graphite replied to the topic Looking for a new microscope in the forum Sharpener and Accessory Maintenance 6 years, 4 months ago
Marc, re: “Why do I see in some Dino-lite USB Microscope videos, on high power they’re illustration is a microscope mounted in a stand shooting down on the viewed object from some distance away, not in direct contact. Why the difference in the focus length?”
They have specialized models with longer working distances (they have an “L” in the la…[Read more]
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graphite replied to the topic Looking for a new microscope in the forum Sharpener and Accessory Maintenance 6 years, 4 months ago
Hi Mark, I think you mean Depth of Field rather than depth of focus (see: https://www.videomaker.com/article/d2/13086-the-difference-between-depth-of-field-and-depth-of-focus they define the practical aspects of these terms like this: “In common English, Depth of Field is what the photographer is interested in; it is what is in acceptable f…[Read more]
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graphite replied to the topic Help! Something happened to my clamp! in the forum Getting Started 6 years, 4 months ago
Does anyone have any thoughts on whether what I experienced here was a 1-time thing related to brand new diamond stones and the bigger diamond chunks breaking off and falling into the vise?
I’m guessing that initially, the stones shed A LOT more debris than once they are broken in, but does that shedding decrease by a huge amount after say a…[Read more]
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graphite replied to the topic Help! Something happened to my clamp! in the forum Getting Started 6 years, 4 months ago
I’m back in business after disassembling and cleaning it.
In the process I took photos and created this disassembly and cleaning instruction pdf file:
https://view.publitas.com/p222-16215/we-clamp-disassembly-and-cleaning-12-12-17
When this link displays, you can either view it there, or on the left, there is a button to download the pdf.
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graphite replied to the topic Help! Something happened to my clamp! in the forum Getting Started 6 years, 4 months ago
Thanks tcmeyer. I removed the jaws and there was a fair bit of dust, but the clamp lever is still not moving correctly.
In any case, I’ve emailed the folks at WE.
BTW, when I removed the jaws there was a small round foam tube (black in color), about 1/8″ diameter and about 3/4″ long. That fell out when I lifted the jaws off so I’m not sure where…[Read more]
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graphite replied to the topic Diamond stone photos in the forum Abrasives 6 years, 4 months ago
If you think about the time involved in scanning every square millimeter of every stone at high magnification and then using a dental pic or something to manually pry out every oversized diamond on a diamond-by-diamond basis, it’s not very practical and it would greatly increase the labor portion of the stone’s cost.
But maybe that’s not what…[Read more]
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graphite replied to the topic Diamond stone photos in the forum Abrasives 6 years, 4 months ago
Justin, sure, send me a PM with your email (if PMs are back working).
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graphite started the topic Help! Something happened to my clamp! in the forum Getting Started 6 years, 4 months ago
I was getting started today (2017 field and sport pro) with a set of expendable knives, and I’ve gone through the grits on a couple knives from 100 through 1000, not really trying to get a great edge but rather to go through the motions. My clamp now not only has a very gritty sound as I try to open and close the clamp lever, but it will no longer…[Read more]
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graphite replied to the topic Diamond stone photos in the forum Abrasives 6 years, 4 months ago
Yes, a USB microscope. Just got it and still learning how to deal with the various settings and different light diffuser adaptors that you snap on to the end of it. I’ve never had a digital microscope before so I don’t have anything to compare it to. This one is a Dino 4815ZT. Just like with digital cameras these days, a $150 camera can get nearly…[Read more]
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graphite replied to the topic Knife clamping position questions in the forum Tips for Specific Knife Grinds and Styles 6 years, 4 months ago
Thanks Curtis. There’s a gallimaufry of different but related topics intermingled in that 13 page thread so it’s going to take some time to get through and digest it. There are separate discussions of o-rings and wedge clips and concentric circles and string setups, not to mention the original topic of the angle guide.
A question:
Does anyone…[Read more]
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graphite replied to the topic Is there a long knife clamp/holder? in the forum Getting Started 6 years, 4 months ago
On the topic of diamond stone break-in period, I had an idea while brushing my teeth. You know how some tooth brushes have a couple rows of colored bristles, and as the color gets worn away with use, it serves as an indicator that it’s time for a new tooth brush? I’m going to try something similar with my diamond stones.
I’ve drawn a red sharpie…[Read more]
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graphite replied to the topic Knife clamping position questions in the forum Tips for Specific Knife Grinds and Styles 6 years, 4 months ago
Hi tcmeyer, I do recall watching the video and subsequent correction that I think you’re talking about, by Simple Life or something like that. But I thought that was limited to the blade being straight, AND the edge had to be parallel to the jaws.
I even think I recall the explanation from curtis, but I thought that was similarly limited to the…[Read more]
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graphite replied to the topic Knife clamping position questions in the forum Tips for Specific Knife Grinds and Styles 6 years, 4 months ago
I’m not sure I understand your point above.
Let’s say I have the blade edge parallel to the jaws, but I lower it down in the jaws like the yellow outline in the graphic below:
That new yellow position will increase the bevel angle relative to the old position, right?
But if I understand what you’re saying, regardless of whether the Stone is…[Read more]
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graphite replied to the topic Diamond stone photos in the forum Abrasives 6 years, 4 months ago
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graphite started the topic Diamond stone photos in the forum Abrasives 6 years, 4 months ago
Here are a few microscope photos, as I try out different settings:
This is a 100 grit stone. It’s tough to get the lighting just right so that you don’t get saturated white blooming in some places and good color/focus in others. This turned out pretty well:
Speaking of “bloom” this larger bright white chunk was a trade-off in getting the rest…[Read more]
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graphite replied to the topic Knife clamping position questions in the forum Tips for Specific Knife Grinds and Styles 6 years, 4 months ago
Mark76, re: “if you clamp the knife very near the handle, can’t you get the edge horizontal?”
Yes, good call.
But let me take a step back and post some photos. This first photo (not in the position you’d use to sharpen) is just showing that the clamp can exert force lower in the jaw than just at the top of the jaw, depending on the shape of th…[Read more]
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graphite replied to the topic How "unflat" is problematic with the diamond stones? in the forum Getting Started 6 years, 4 months ago
tcmeyer, re: “In this case, we’re talking about variations within a given stroke, so the result is that this stone will produce a bevel that is slightly out of “flat.” After a nominal number of strokes, I don’t think you’ll be able to see the error, even with a microscope.”
Thanks, that’s exactly what I was asking about.
The way I measured…[Read more]
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graphite replied to the topic How "unflat" is problematic with the diamond stones? in the forum Getting Started 6 years, 4 months ago
Thanks Marc. It’s taking some restraint not to jump right in and begin sharpening, but I want to get the magnified photos of the new stones first, and I only have one chance to do that (and also learning how to use the microscope takes a bit of time). Hopefully I’ll begin sharpening later this weekend.
I used an Edge Pro previously, and, long…[Read more]
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graphite replied to the topic How "unflat" is problematic with the diamond stones? in the forum Getting Started 6 years, 4 months ago
.011″ is easily visible with the naked eye. If I was doing a fine woodworking project and I ended up with .011″ gaps in my joinery I’d throw that part out and re-do it. That’s too big a misfit for my taste, but others may be fine with it. But if I’m just slapping together 2×4’s to build a crude shelf, that’s a different story, and a .011″ error…[Read more]
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