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The Newbies Arena Are you new to knife making? Here is all the help you will need.

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  #1  
Old 05-10-2013, 08:50 PM
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Austin Cutlery Austin Cutlery is offline
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Question Scratches

Working on 2 knives right now and one of them I can not seem the get the scratches out. Any tips or tricks or just keep going higher in grit and some day they will be gone? I only have a pic on my phone so I can't post one right now!
Does tapatalk work in this forum?
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Old 05-10-2013, 09:00 PM
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In a nutshell, you need to sand out all the scratches from the previous grit before moving on to the next grit. In other words, if you grind with 60 grit then when you go to 120 you need to use the 120 until ALL the 60 grit scratches are gone before moving on to 220 (or whatever you use next). If the style of your blade will allow you to sand both lengthwise and across the blade then changing directions with each grit makes it very easy to tell whether or not you have removed all the scratches from the previous grit.

I don't know if Tapatalk will work with this forum or not. I can say that I have accessed this forum on my Android tablet just using the web browser...


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Old 05-10-2013, 09:12 PM
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I am down to just sanding by hand and gone up to 800 and still see scratches! I am on here fine withy iPhone but tapatalk let's you upload pics.


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Old 05-12-2013, 06:46 AM
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It's pretty simple if you think it through. If 120 grit doesn't get all the 60 grit scratches out.....why would you think 220 or 320 would? Follow Ray's advice, you have to work all the scratches out with each successive grit before proceeding to the next. No short cuts to quality work.

If you are that impatient to get to the end results, you need to take a break rest them fingers and rethink your motivation for completion.


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Old 05-12-2013, 06:54 AM
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What Carl and Ray said.


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Old 05-12-2013, 08:02 AM
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To clarify a little bit. If you are seeing scratches that will not come out at say 400 grit, then you need to drop back to 220 grit, resand the blade until the scratches are gone, then move back to the 400. I usually use the rule of thumb that if I am hand sanding one spot for more than 5-10 minutes without removing the scatches then I need to back up a grit.
Hope that helps
Steve


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Old 05-12-2013, 09:45 AM
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I'm not trying to rush it, I have worked on several days and it just does not seem to come out


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Old 05-13-2013, 09:34 AM
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ok here are some crappy pics from my phone. the larger one is the one I was having problems with. I went back to 400 and went all the way up to 1500 by hand and have most of the scratches i was seeing gone now. these are both out of 1084 big one is 5 blade and 9 1/2 over all. the other is 4 and 8 1/4 was 8 1/2 but to much grinding and yes from top to bottom is thin is only 1 inch. I am very rusty I see and should measure more and go slow till I get back in the hang of things. Thoughts???? be gentle... lol
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Old 05-13-2013, 09:56 AM
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They look great to me. Thanks for sharing


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Old 05-13-2013, 10:00 AM
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I also know on the smaller knife that my tube hole is a little close to the edge, when I put a handle on it if it is to close I will just not have a tube in the handle.


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Old 05-18-2013, 01:23 PM
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Shawn, not sure how you are working your blades but I grind with a 50 grit, then 220, 400, then I use the trio of Trizac 30, 16, 6?..followed with 1000 grit cork. Then hit the buffer, I quit doing that hand sanding years ago?.right combination of belts and grinding you won't need to do any hand sanding.

If you ever make it over to MO drop by and I can show you how to do it. Hope that helps.

John I.


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Last edited by John I Shore; 05-23-2013 at 10:05 PM.
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