Quick Sandpaper Questions

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May 18, 2011
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I have slowly begun to understand the art of freehand sharpening via the use of good 'ol, inexpensive sandpaper. I can get almost shaving sharp edges without too much of an issue :D. Though this may be, I wish to take it farther. One thing that is inhibiting my ability to sharpen properly is my inability to keep the sandpaper stagnant while I sharpen. Sometimes the paper will slip, and the edge hits the sandpaper, destroying my edge :grumpy:


Is there any method of keeping the sandpaper still while I sharpen other than the glass trick? Would it be wise to cut up a 2x4 and staple the sheets to the pieces for makeshift bench stones? Find a sheet of rubber? I have heard of people wetting the paper and putting it on glass, but I do not have a pane at my disposal at the moment.


Secondly, I am planning to fully convex my BK2, but I do not with to mess up the edge when I am beginning at the lower grits. How much pressure is too much for these lower grits? I would think that moderate pressure is best as to let the paper do the work, but I know that the impatient gene that comes from my father's side of the family may take over and I may push too hard on the paper and destroy the edge :D



To help you understand what I do, in case you need to know, here is how I would do things: one hand, of course, on the handle and my three fingers on the other hand resting on the blade itself using moderate pressure in either a forward and backward motion or a circular motion depending on the blade. I found that when I do this, I receive better results than using the mouse pad method (I end up convexing everything).


I use grits from 80, 100, 220, 400, 600, 1000, 2000, and my strop with BRKT green compound respectively.
Are these grit gaps too big? Should I fill in some of them? (getting 300, 800 and 1500 grits?)






I am sorry for the lack of adequate organization of my post and the number of questions! I have looked at sharpening threads before, but have never found exactly what I needed. If clarification is needed, do not be afraid to ask!

Thank you for reading guys and gals, I appreciate it.

-Deadfall
 
Hows that for an answer? Sending pics and your getting a phone call. The people on this forum are the best are they not?

SEMPER-FI TIL I DIE
 
its a good thing i have free long distance on the home line or i would have one heck of a long distance biill. i can even call canada for free :D
russianpolander, if you are ever up for a road trip to ohio you're welcome to come down this spring. i hope to have a sharpen in and get a bunch of members to come over. a buddy has offered the use of his coffee shop for a meeting place.
 
its a good thing i have free long distance on the home line or i would have one heck of a long distance biill. i can even call canada for free :D
russianpolander, if you are ever up for a road trip to ohio you're welcome to come down this spring. i hope to have a sharpen in and get a bunch of members to come over. a buddy has offered the use of his coffee shop for a meeting place.

Ooh, that sounds like a winner to me, especially if there is coffee involved.:D:D:D

Let us know.

SEMPER-FI TIL I DIE
 
If it helps...

I have an extra strop (a strip of leather glued onto a piece of wood) that I use specifically for sandpaper. I cut the sheet of sandpaper to fit evenly on the leather and wrap rubber bands around each end of the strop to make sure it stays flat. The rubber bands make for an easy on off solution with the sandpaper.

I had a thought the other day to try using a clipboard in place of a strop. Mount a piece of leather on it and use the clip to hold the sandpaper down on top of the leather. Need to find a clipboard somewhere...

Maybe some binder clips might work for you?...View attachment 257590
 
When I used to sharpen on sandpaper I had the same issue. Far and away the best method for holding sandpaper down is this type of wedge-block. I got the idea from a blog that I've since forgotten the link, but did steal the idea. The aluminum plate can be used for flat V grinds, and varying materials can be held in place under the sandpaper for convex. For wedges I just cut the ends off a couple of shims, cut the slots with a handsaw. I kept all my paper in a roll - a full kit. the block is set up so I can get 3 pieces from a 9x11" sheet. The block is 9" long and trimmed down to 3" across (started life as a 2x4).

0510111857-2.jpg
 
Use 3M wet/dry sandpaper, and stick it to a wet piece of glass. the water will hold it like glue, but it peels right off when you want to wash it.

This works well for flattening stones as well as sharpening.
 
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