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Started by Dutchman, April 14, 2014, 07:45:09 PM
Quote from: BennyJ on January 18, 2020, 09:34:36 PMHi again Ton.I have now tried to make a spreadsheet again. But I can't seem to get it to work.I want it to calculate the height of the USB, vertically from the top of my Tormek T8. The same way as Knifegrinders App is working. The reason why i just don't buy the app is because i would like to be able to get the measurements for both the vertical USB stand and the horisontal at the same time, and over time also the FVB. So i don't need to use the program more than once, if I want to use both (all tree) USB stands.I can't seem to get the math right though. If I input 12 degrees per side, and set the USB to the calculated height on my Tormek, i measure approximately 18 degrees per side with the Tormet angle tool (WM-200).I have used http://cossincalc.com/ to help me get the calculations correct.Do you by any chance have the time to look over my spreadsheet? It is made in MS Excel, and saved as both .ods and .xlxs.Onedrive link to my spreadsheet: https://1drv.ms/u/s!AvIzveHgBujUgoBVJhQfpIqGpQFXFQ?e=wncg5hThanks in advance! - Benny
Quote from: BennyJ on January 19, 2020, 12:13:30 AMWow.. No one has ever become one of my best friends that fast! You just did, cbwx34! That was it.. I calculated wrong, i subtracted the 6mm from the calculation, instead of adding.You just made my day! Thank you very much!I am so happy right now!! I think i have used 40 hours on this . (I have made a much bigger sheet, the one i showed you guys was just a little sample, of the most important.)Thanks again!- Benny
Quote from: BennyJ on January 18, 2020, 09:34:36 PMI have now tried to make a spreadsheet again. But I can't seem to get it to work.I want it to calculate the height of the USB, vertically from the top of my Tormek T8. The same way as Knifegrinders App is working. The reason why i just don't buy the app is because i would like to be able to get the measurements for both the vertical USB stand and the horisontal at the same time, and over time also the FVB. So i don't need to use the program more than once, if I want to use both (all tree) USB stands.
Quote from: BennyJ on January 18, 2020, 09:34:36 PM...I want it to calculate the height of the USB, vertically from the top of my Tormek T8.The same way as Knifegrinders App is working....
Quote from: Dutchman on October 25, 2022, 04:28:18 PMThis topic has been made sticky so that it will always be at the top of the board. To ensure the availability of the most important documents, they are attached to the first post at the beginning of this topic.The size of the booklet versions was outside the allowed limit of 1024Kb. However, the Adobe Reader app offers the option of printing the A5 documents as booklet on A4.
Quote from: cbwx34 on October 30, 2022, 03:56:47 PM...Since this is a "sticky" I'll add this link here...Knife Sharpening Calculators available... probably every app/calculator/spreadsheet made, came from, or was inspired by Dutchman's work.
Quote from: Dutchman on October 31, 2022, 10:38:52 AMQuote from: cbwx34 on October 30, 2022, 03:56:47 PM...Since this is a "sticky" I'll add this link here...Knife Sharpening Calculators available... probably every app/calculator/spreadsheet made, came from, or was inspired by Dutchman's work. Thank you. I have added the link to the first post of this topic.How do you hide the link in the 'title'??
Quote from: benhung on May 06, 2023, 02:21:26 AMHi Ton,Thanks for your invitation. It's my honour to be here, explain your formula to help new user.To senior members,First, I would like to say thank you. All sharing of your works & experiences are excellent, help many newbies quickly pick up sharpening skills. I learn a lots from you.There are many way can reach goal, every method is good when we get there.The method I described next, may not suit for you. I use a different view to look at Dutchman's Formula. I try my best to step into his shoes to understand what he thought. Different view point many cause confusion made it more complicate. Should beware.To New users,Congratulations, you are here. Dutchman's Formula is a gem. It's precision, effective and beauty. It also can be easily applied to real work, no adjustment needed.Long story short, let's start. Want to master your sharpening machine, you have to understand the world of rotation. I made some animation to explain it.First, I design 2 funny jig, mount a blade on it to compare with Tormek's knife jig. Watch how they work and what they are different. In the next few animation, you can zoom & drag to watch it.https://www.geogebra.org/m/mszugnu3Don't punch me, next link might make you more confuse. Don't worry, I will bring you back soon. Try drag speed bar to make it faster. The real moon's speed is faster than it.https://www.geogebra.org/m/pr9xmnguI put them on moon's orbit. They are self rotating, rotate around moon. Also drag by moon to rotate around earth. It's very complicate to figure out. How can we get which parts is stable? Which point we can approach?Next link show how I approach.https://www.geogebra.org/m/asprvpjgI grab them from moon's orbit. Setup on my desktop. I have to make sure something fix and stable. Don't let the stupid obit fool me.Left bottom of the frame has a small stop/play button. Stop it, drag angle sliding-bar slowly to watch them carefully. Dutchman's real projection (I name it) and jig rotate radius are in there. Don't ask me how and why. The answer is inside the animation diagram. If you don't get it, look it again and watch it carefully.Ok, my demonstration is done. The next few link show Dutchman's formula. All the works is his, not mine. It's simple, clear and beauty. I won't do too much explain.https://www.geogebra.org/m/trpp72ekThis link, I took away many things which may confuse you. Only left 2 circle link by knife blade. The blade angle is decided by two tangent line. It make sense, sharpening happen at the blade tip only.The next link is Dutchman's origin theory. I didn't change anything.https://www.geogebra.org/m/wwuqbvhhThe next link is my solution to find Dutchman's projection and jig rotate radius. Last link is my calculator. All measure point is center (such as USB center).https://www.geogebra.org/m/haxutcdvDrag the jigs slide bar to watch, no matter the shape and protrude vary, the projection & radius is same.https://www.geogebra.org/m/wndeq2gnBest Regards,Benjamin
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