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Hi anyone has exprienced lapping of large hone (8x17"). I was given an old hone by my aunt who had it from her father who was involved in national stone mining business. It looks slate ish however I could be surprised due to background of the original owner. I do not want to just experiment with this hone. I do have stone plate large enough to accommodate sanding belts from floor sander however they do not come in higher grits. Anybody can chip in. Many thanks.
How much lapping does it need? I've no experience with lapping huge stones, but I can tell you that the bulk of your work needn't involve higher grits. Once you get it flat enough with the lower grits, I'd probably just set the hone on a counter and polish the top with sheets of wet/dry sandpaper taped to your stone plate.
Take it to a place that does marble & granite counter tops. They have the equipment and know-how to turn granite and marble to shiny glass
This is what I thought of just was not sure about edges of those papers damaging the work.Quote:
Originally Posted by northpaw
Quote:
Originally Posted by shooter74743
Only trouble is that on this side of pond the price is a bit steep and also this hone is the only one with the history and I would prefere to stay in low speed.
slap to sheets onf sand paper on flat surface and lap with running water.I doubt you will have any problemsQuote:
Originally Posted by adrspach
post some pic of this stone
What about lapping grit on a hard flat surface?
I'm also curious to see pics.
What was such a huge hone used for?
What! 8" x 17"
Thats a bench top not a sharpening stone lol
How about one of the 10" by 4" DMT Lapping plates sideways? lol Maybe you could create a metal rail system on either side of the stone that keeps the DMT plate level all the way across (as you would have 2" either side with that plate) and drop the rails half mm each time until you get it how you want it.
Attachment 76120
Attachment 76122
The same method as you would use to flatten ground for paving etc. With paving you sink two pieces of wood or metal into the ground, level it and then drag a third piece of wood or metal across to make it level and remove any excess dirt. (in your case excess stone lol)
If you have some patients, a few spare hours and a workshop you could make a jig to do this. I would make it so its adjustable up and down from all 4 points.
what would a stone that size be used for!?!?
What it was used for was knives by last ovner. What it was made for I have no idea. Pics will be when I get home and there is some decent light left. So far work long hours or there is rain. I do not want to take pictures in bad light as then you can not see interesting pattern on it.
Rain....Rain....what the heck is that?
I'll ship you some from Belgium. We've been having a surplus for the last couple of months. :)Quote:
Originally Posted by shooter74743
This'd be a great hone to go with that 17" $16,000 razor that was in a thread a couple of weeks ago.
Attachment 76128
and another good candidate in this post.
There are lengths of sandpaper used on belt sanders, 4 x 36, 6 x 48 , 24 x75 for the big "Time Saver" commercial sanders. I would get one of the big belts and cut it so that it is all one long strip. Then I would use WD40 as a lubricant so that the binder in the belt would not dissolve.
Hope this helps, :D
I have got those already as well self adherent belt used on top of skateboards however they do not go above 180 grit.
I have some that go to 500 grit. FWIW, try trugrit.com and see what they have available. IIRC they will cut to order.
Thank you. I have made some pictures today. I will try to post them asap.
Cant see that such a big stone would be that useful TBH, might be better to have it cut down to 5 8X3's
I actually agree that it would be more useful cut down...and much easier to lap the smaller ones. I've never had a need for any hone to be wider than 3" & many of my naturals are in the 2" +/- range.
