Hi Bonnie, great close in video showing the some of the possible issues. This is a great find because there is probably more than a single issue with the shear. Three additional points to add that sharpeners could consider during their sharpening process: When doing the rideline and gaps appear on first couple of passes, like you showed that red was not removed @7:05 ; take shear to alignment bar and check for alignment issue. When I see red in the area like you saw, I usually find previous sharpening was too aggressive and took off too much metal into internal hallow grind closer to the pivot area because the outside of the flat hone runs faster than area at the tip or the tip is over bent. Both situations can help with some alignment correction applied if alignment check determines an alignment issue exists. 2. Rideline not going right to the edge is usually an indicator that previous sharpener has either lifted shear in motion or is rolling the shear off the wetstone when doing the rideline. I have also seen this happen when a stylist waits too long between sharpening and just over use of the tip from point cutting and basically rounds over the edge edge from excessive use from the tip point cutting. When this happens it appears as a gap created on both outside and inside rideline area. This fix is a combo fix, either more rideline work on wetstone or more metal removal on outside to get both outside and rideline edges to meet. 3. If you measure the previous angle and find it blunter than what it should be and decision is to restore angle to a sharper angle, the tip area will typically produce gap lines where new sharpening does not extend right to the edge. Also in your correction the tip area may produce a burr over the edge and give you a false first impression that you have sharpened to the edge. When correcting from blunt to sharper angle don't assume the initial burr means you have sharpened right to the edge. Go and knock first burr off and inspect the outside sharpening for light gaps like your first part of the video show, especially when doing the first passes on angle changes from blunt to sharp. Other possibility is that if previous sharpener freehand sharpens, usually you will find the tip is a bit blunter because that is the easy way to to get a burr quicker at the tip. This is usually indicated in the white line on the outside edge like you observed. Great video!
Todd, as soon as I saw the long comment, I knew it was you. You take the analytics of sharpening to a new level, and I mean this in a nice way. We've got to get you to a Sharpener Jam to teach a class on these details that you are able to recognize with your engineer analytical brain.
I love your eye for detail Bonnie. just a home groomer for shelties but learning so much about shears i have for years and why not working so good now. no local sharpening people so may have to mail to you. so glad i found you. thank you for all videos
Hi there dear .first time watching your videos! Very interesting theory you have it's very close to my industry 24 year's surgical instrument repair specialist and now cross over your industry mobile van ect. Thank you so much 💓
Hi Bonnie, great close in video showing the some of the possible issues. This is a great find because there is probably more than a single issue with the shear. Three additional points to add that sharpeners could consider during their sharpening process: When doing the rideline and gaps appear on first couple of passes, like you showed that red was not removed @7:05 ; take shear to alignment bar and check for alignment issue. When I see red in the area like you saw, I usually find previous sharpening was too aggressive and took off too much metal into internal hallow grind closer to the pivot area because the outside of the flat hone runs faster than area at the tip or the tip is over bent. Both situations can help with some alignment correction applied if alignment check determines an alignment issue exists. 2. Rideline not going right to the edge is usually an indicator that previous sharpener has either lifted shear in motion or is rolling the shear off the wetstone when doing the rideline. I have also seen this happen when a stylist waits too long between sharpening and just over use of the tip from point cutting and basically rounds over the edge edge from excessive use from the tip point cutting. When this happens it appears as a gap created on both outside and inside rideline area. This fix is a combo fix, either more rideline work on wetstone or more metal removal on outside to get both outside and rideline edges to meet. 3. If you measure the previous angle and find it blunter than what it should be and decision is to restore angle to a sharper angle, the tip area will typically produce gap lines where new sharpening does not extend right to the edge. Also in your correction the tip area may produce a burr over the edge and give you a false first impression that you have sharpened to the edge. When correcting from blunt to sharper angle don't assume the initial burr means you have sharpened right to the edge. Go and knock first burr off and inspect the outside sharpening for light gaps like your first part of the video show, especially when doing the first passes on angle changes from blunt to sharp. Other possibility is that if previous sharpener freehand sharpens, usually you will find the tip is a bit blunter because that is the easy way to to get a burr quicker at the tip. This is usually indicated in the white line on the outside edge like you observed. Great video!
Todd, as soon as I saw the long comment, I knew it was you. You take the analytics of sharpening to a new level, and I mean this in a nice way. We've got to get you to a Sharpener Jam to teach a class on these details that you are able to recognize with your engineer analytical brain.
I love your eye for detail Bonnie. just a home groomer for shelties but learning so much about shears i have for years and why not working so good now. no local sharpening people so may have to mail to you. so glad i found you. thank you for all videos
You are so kind
Hi there dear .first time watching your videos! Very interesting theory you have it's very close to my industry 24 year's surgical instrument repair specialist and now cross over your industry mobile van ect. Thank you so much 💓
Thanks for sharing!
Thanks for showing great videos
Glad you like them!
Thanks for the video. Please make an overview of your working tools and grinding machines.
Thank you.
I shot this video a few years ago. Also all the tools are on the website www.bonika.com.ruclips.net/video/SpVcy-JelKM/видео.html
good video Bonnie, i was wandering how that side of the shears would look on a flat bar?
The truth? I really didn't want to know because I might be tempted to bend them and I didn't want the temptation.