Finishing bevels on disc sander

Kevin McGovern

Kevin McGovern

Joined
Jul 31, 2015
Messages
3,118
I saw a YouTube video of a guy using a disc sander for fine sanding the finished bevels of a large Bowie. How do you do that and not mess up the plunges?

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not sure, but maybe he was just taking off the high spots if any and blending?
 
i have just started to play around finishing bevels on a disc sander so far what i have learned about the disc and plunge lines is paying real close attention to where the disc edge is. it is real easy to wipe out the top of the pluge, a good adjustable light is priceless.
 
I always go to the disc sander after the 2X72.
The edge of the disc sander bumps right into the plunge area and eliminates your grinder lines.
There is no messing anything up. Only improvements and eliminates hours of hand sanding over time.
Anyone who makes knives and does not have a disc sander should re-think things.
 
Karl B. Andersen said:
I always go to the disc sander after the 2X72.
The edge of the disc sander bumps right into the plunge area and eliminates your grinder lines.
There is no messing anything up. Only improvements and eliminates hours of hand sanding over time.
Anyone who makes knives and does not have a disc sander should re-think things.
Click to expand...
Totally agree with Karl. I have a Rod Neilsen magnetic disk grinder that is amazingly true. Saves a lot of hands sanding for me as well.
 
As Karl said above if you are a serious knifemaker without a Disc, rethinking is in order.
I'm running 3 at the moment and would'nt want to be without any of the three.
Ken.
 
My Neilson disc grinder helps me huge in geting parts ready in making my liner locks. I don't have a surface grinder.
Frank
 
Thanks. I have the plates cut for a build. I just need to assemble with the motor and disk. I know I need one, I just had not realized the utility.

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I have a couple of disc grinders but no variable speed. I'd love to use them more but would need to go VS to get the most out of them. Sounds like the OP was talking about Nick's vid.
 
I almost always hollow grind my blades because I like the look but I smooth the flats on my blades just before grinding bevels and just after heat treat to make everything nice. I also use a Nielsen disc system and go slow and wet with Rhynowet or 3M wet/dry. Larry


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a little more insite to what i was doing wrong to wipe out the top of my plunge line. when i first got my disc a little over a month ago i had never used a disc to clean up my bevels. and i found i was making a very critical mistake on my part, when i was trying to do the top i wasnt leaning over and watching where the edge of the disc was riding and i was above the center line of the disc on the hi side, so that part of the disc was actually pushing out past the plunge, slowly walking it back. leavjng my plunge curved at the top.
 
After a good friend gave me a piece of thin rubber to put on the face of my disc, I love mine even more! Thanks bud!
 
Yup, been meaning to put a thin backer of some kind (cork, rubber) on mine for a long time now. There's definitely a learning curve to using a disc sander though. But with a little patience and practice, you'll get the hang of it in no time. My file guide helped me quite a bit until I got comfortable using it.
 
I bought some rubber disc's from KandG, I havent used them yet, what applications do you use it with? Handles? Blades, both?
 
Evan Miner said:
a little more insite to what i was doing wrong to wipe out the top of my plunge line. when i first got my disc a little over a month ago i had never used a disc to clean up my bevels. and i found i was making a very critical mistake on my part, when i was trying to do the top i wasnt leaning over and watching where the edge of the disc was riding and i was above the center line of the disc on the hi side, so that part of the disc was actually pushing out past the plunge, slowly walking it back. leavjng my plunge curved at the top.
Click to expand...

I'm actually more comfortable using mine with the disk horizontal these days (I change techniques all the time, though) for some reason- it feels like I have better control of the blade.
 
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