Page 1 of 4 123 ... LastLast
Results 1 to 10 of 32

Thread: Knife Polishing

  1. #1
    knife_man's Avatar
    knife_man is offline New User
    Join Date
    Nov 2005
    Posts
    16

    Question Knife Polishing

    Hi all, I am trying to learn how to polish pocket knives and achieve a mirror shine and finish, no polishing marks. Metal materials are stainless steal, carbon steal, & CV chrome vanadium mostly. I'm trying to get the same finish it would have stright from the manufacture.( i.e. Case Knife Co.)
    I was wondering if any one here could HELP me out ?? I'm using a 3600 rmp buffing machine, with a polishing kit from Caswell. Any help would be greatly appreciated.

  2. #2
    pickleboy's Avatar
    pickleboy is offline Metal Finishing Guru
    Join Date
    Feb 2005
    Location
    belleville michigan
    Posts
    635

    Default Re: Knife Polishing

    welcome to the forum first off. as for the blade polishing you will need to establish a grain pattern on the blade. if they are new knife blades this step can be skipped. i would start out with a 240 grit sand paper and sanding block. then move up in grit through 800 grit, wet sanding all from 400 grit up. then start with a spiral sewn wheel and emory. first work the blade in the direction of the sanding grain. after you have a good cut change directions 90 degrees. keep working this combo and changeing directions till you get the shine level you need. then move to a spiral sewn with white compoundicon. this should give the glow color you are looking for. if still not quite right then move to loose cotton and white to finish. best of luck bro and keep us posted on your progress.
    when in doubt polish it out/ why replace it when you can refinish it
    G2 Polishing and Powdercoating

  3. #3
    fxstcguy98 is offline Amateur Metal Finisher
    Join Date
    Dec 2003
    Posts
    201

    Default Re: Knife Polishing

    I agree with pickleboy, but I would start (after sanding) with emory on a sisal wheel for the carbon steel (sisal will cut faster). For the stainless and I assume in cr v., you will have to start with a sisal and a SS compoundicon (caswells sells 3 or 4 types) then move to spiral with the SS compoundicon, then white on loose. Stainless is a very hard metal, if you try to polish that with emory on a spiral, you'll be there all day.

  4. #4
    knife_man's Avatar
    knife_man is offline New User
    Join Date
    Nov 2005
    Posts
    16

    Thumbs up Re: Knife Polishing

    Hi guys, and thank you for the help. What if i have a factory finished knife blade that has begun to rust in spots and has left little pitted out holes. Would i still need to follow the steps you've recomended and bring the metal down below the pitted holes to remove them?
    Also i have taken a factory finished knife that has got just very light scratches and tried to remove them, i am still leaving polish marks, and can't seem to get that smooth mirror finish that it originally had from the factory.
    I must tell you that i am totally a rookie at this type of professional polishing. Now that i am semi retired, i want to learn how to become a professional at this. I have been collecting and selling knives for 20 plus years. And eventually i would like to become a custom knife maker.
    As for now the only polishing equiptment i have is a 3400rpm polisher and the kit i recently got from Casewell. Any suggestions as to what other equiptment and tools i might need to get would be greatly appreciated. From your guys post it sounds like i need to get some type of belt sander.

    Again thanks for the info. and and help guys !!!

  5. #5
    fxstcguy98 is offline Amateur Metal Finisher
    Join Date
    Dec 2003
    Posts
    201

    Default Re: Knife Polishing

    Yes sand past the pits and continue as described above. Polishing marks can either be sanding scratches that were from a previous step (which means keep going until they are gone) or it's coming from your buffer or your cleaning process. Rake your wheels more often, and rake the **** out of it before the final buff and use a soft cloth for the cleaning process. Keep your compoundsicon in seperate plastic bags to keep grit off of them (makes them last longer too) be extra careful with the white, a tiny piece of grit can ruin a great finish. Some people claim that you do the final buff with talc powder and it takes minute scatches out, but I have never tried it personally.
    A belt sander would be perfect for doing knives, especially a stationary one.

  6. #6
    knife_man's Avatar
    knife_man is offline New User
    Join Date
    Nov 2005
    Posts
    16

    Question Re: Knife Polishing

    Thanks for the reply, as for the belt sander. Would just any belt sander work ? Should it be wet or dry or both ? And where might be a good place to pick one up for what I am looking to do with it ?
    Also what would Naval Jelly do to the finish on a knife blade, if I used it to try to remove some tiny rust spots ?

    Thanks for all the help !!!
    Last edited by knife_man; 11-19-2005 at 01:07 PM.

  7. #7
    jrow is offline Experienced Metal Finisher
    Join Date
    Jul 2005
    Posts
    495

    Default Re: Knife Polishing

    knife_man,

    I think I would get a combination disk/belt sander. I would prefer a disk sander with a 6" disk the belt would be someplace around 36" to 42". The reason I would use a 6" disk is that the DA sanders use 6" disks therefore making sandpaper readily available. You can get some pretty fine sanding disks for a DA making your manual labor a lot less.

    Sears has a nice combination sander for around $100.00.

    Naval Jelly: I haven't used that in many years. What I use is ********s OxySolv to clean the pits out. How do you plan on sealing the blade after you get the pits cleaned put?

    John
    Last edited by jrow; 11-20-2005 at 10:59 AM.

  8. #8
    knife_man's Avatar
    knife_man is offline New User
    Join Date
    Nov 2005
    Posts
    16

    Smile Re: Knife Polishing

    Quote Originally Posted by jrow
    knife_man

    How do you plan on sealing the blade after you get the pits cleaned put?

    John
    On the sanders, I thought that I would have neded a flat belt sander or even 2 seperate sanders one wet and 1 dry, or if they make a snader that does both. To be able to get a precise grind. I even thought that I might have to make some kind of jig or clamping device to be able to hold the knife in a precise position, so I could attain a level and precise grind. I'm not sure if I can get this by hand.
    As I have stated in my other post, I am totally a rookie at this. So as for your question about the sealing of the blade I have no idea. I didn't even know you needed to seal it. But it does make sence now that you have mentioned it. Any advice will be greatly appreciated.

  9. #9
    pickleboy's Avatar
    pickleboy is offline Metal Finishing Guru
    Join Date
    Feb 2005
    Location
    belleville michigan
    Posts
    635

    Default Re: Knife Polishing

    hey knifeman there is a company in oklahoma that is just what you need for the knife biz. the company is jantz they have a web site http://www.jantzsupply.com/ and offer a great catalog, its $5.00 but well worth it. as for the final polish you are looking for, i just tried and like them, is felt polish wheels. i have 10 inch ones. you can use them with regular compoundicon. it only takes a very light touch though or they will get scorched. i dont know if caswell offers them but if you call and ask they might be able to add them to the product line.
    when in doubt polish it out/ why replace it when you can refinish it
    G2 Polishing and Powdercoating

  10. #10
    knife_man's Avatar
    knife_man is offline New User
    Join Date
    Nov 2005
    Posts
    16

    Thumbs up Re: Knife Polishing

    Wow......sounds like just what I've been needing. Thanks so much guys, you all are a really big help to me.
    Also I will give Casewell a call Monday and talk to them about that wheel.

    Thanks again guys !!!

Page 1 of 4 123 ... LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. PC Knife
    By Blademan in forum Powder Coating Questions
    Replies: 8
    Last Post: 04-12-2004, 10:47 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •