Polishing knives
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Oh hey, welcome to the PNW, Pandemic NorthWest. I'd love to see a shot of your machine. I'm going nuts doing what I'm doing
I’ll take a picture of it tomorrow and then if you have any questions about it just let me know. Almost the entire machine was made from a treadmill I got for free.
parbaked
Senior Member
Upload your video to YouTube and post a link.
Sorry for the duplicate picture, I hit the same one twice. You can change the length of the throw for different lengths of knives by moving the arm on the wheel either closer to center or farther out to the edge of the wheel. The parts are almost all from a treadmill. The knife table is magnetic and works great for holding down carbon steel knives. This machine saves me hours of sanding. You still need to give attention to trouble areas with the machine stopped.
That's kind of terrifying. I'm impressed at the innovation. I can't wait to see it in action. And yes, gotta use YouTube
HSC /// Knives
Senior Member
@gregfisk um...can I ask you to make some items for me....? 
I don't really do high polishes or high grit sanding, but I did today to make sure I still could, and reveal the hamon
This is a 1084 forged knife to 9 micron.
It took about 10 mins per side coming off the belt grinder at 320 grit.
High alloy steels like Z-wear PM, well that's another story.....
on your machine, which is very cool btw, you would be replacing the sandpaper every few minutes.
Simple carbon steels and AEB-L are pretty "easy" to polish compared to the difficult steels.
I don't really do high polishes or high grit sanding, but I did today to make sure I still could, and reveal the hamon
This is a 1084 forged knife to 9 micron.
It took about 10 mins per side coming off the belt grinder at 320 grit.
High alloy steels like Z-wear PM, well that's another story.....
on your machine, which is very cool btw, you would be replacing the sandpaper every few minutes.
Simple carbon steels and AEB-L are pretty "easy" to polish compared to the difficult steels.
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10 minutes per side to bring it from 320 to polished?
HSC /// Knives
Senior Member
to 9 micron (about 1200 grit) , yes,
it's a small blade 6 5/8"
additional time for the etching and polishing with simichrome or flitz
Gotcha thank you. Im still learning to judge finish levels by eye and teaching myself to translate from micron to JIS grit. For some reason I thought 9 micron was finer than that. Hazards of coming from the wood world where 220 is "fine"
I really like your knife! I do go through the sandpaper but I can really make progress without near as much effort. I still have a lot to learn about finishing my knives but this machine really helps me. Let me know what your wanting made. I really enjoy making stuff.@gregfisk um...can I ask you to make some items for me....?
I don't really do high polishes or high grit sanding, but I did today to make sure I still could, and reveal the hamon
This is a 1084 forged knife to 9 micron.
It took about 10 mins per side coming off the belt grinder at 320 grit.
High alloy steels like Z-wear PM, well that's another story.....
on your machine, which is very cool btw, you would be replacing the sandpaper every few minutes.
Simple carbon steels and AEB-L are pretty "easy" to polish compared to the difficult steels.
inferno
( ͡° ͜ʖ ͡°) <*))))><
if you like making machines try to make one for these
https://www.knivesandtools.com/en/ct/naniwa-round-sharpening-stones.htm
https://www.knivesandtools.com/en/ct/naniwa-round-sharpening-stones.htm
Razor
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A buffing wheel will give the metal a soft look, and if you are not careful you can overheat the metal. It polishes without actually flattening the surface. That is why sword polishers only use stones.
mirror with stones is cool but on such a large and hard surface. Not sure many would take the time to do it.
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Forty Ounce
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I do
Forty Ounce
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My method for mirror polishing is sanding up to 2500 grit with sandpaper, alternating directions with each grit.. then I start with diamonds.. 6m 3m 1m. It usually takes about 6-8hrs per side, granted everything goes according the plan....
Here's a video of some recent work.
https://www.instagram.com/p/B9CY3YLnZqq/?igshid=w4kzdan45js3
Before the extra work.. I made sure to have light reflections to show that mirrored is still scratchy, no matter what.
https://www.instagram.com/p/B0PJhiFHmc7/?igshid=1pzwkmtd31r7p
Here's a video of some recent work.
https://www.instagram.com/p/B9CY3YLnZqq/?igshid=w4kzdan45js3
Before the extra work.. I made sure to have light reflections to show that mirrored is still scratchy, no matter what.
https://www.instagram.com/p/B0PJhiFHmc7/?igshid=1pzwkmtd31r7p
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Forty Ounce
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I've seen people build these for sanding before.. they weren't able to get a patent because it's essentially the same as a motorized sex toy...
Heh. Don't know much about toys.
Unfortunately, I'm either too old or too old to do this for 8 hours straight. But within a few days it's done.
Unfortunately, I'm either too old or too old to do this for 8 hours straight. But within a few days it's done.
Wow, I have never seen one of these machines before. I got the idea from something else that I saw that had a different purpose. When I first thought of it I went on YouTube but couldn’t find anything and I looked several times. If you remember where you saw one let me know. I have no intention of trying to get a patent, I posted here because I thought someone else might like to make one. You made me laugh regarding the sex toy, I actually have seen what you’re talking about. Maybe that’s where I got the idea .
Forty Ounce
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I'm glad you saw the humour.. I know it was a knifemaker in Australia.. if I remember who it was, I'll post it here
