Knifemaking Grinder and tooling

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jamoni:
Here's the first paying job!

It's the beginnings of a small Swiss style marking knife. This was just the first test run, and it did great!
The right hand bevel is a touch off, because the work slipped in the jig on the very last pass. GRR. However, I'm working on a better indexing and clamping method for small work, so the next one will be a lot better. It also needs the shoulders of the blade brought up about 3/4", to give the epoxy something to grab when I glue it into the handle.
Capjak, I'm using O1 tool steel purchased from a local mill. They give me a decent discount if I purchase in bulk, plus free (and quick!) delivery. I've used old files in the past, but they need to be tempered before they can be worked, or they'll chew up tooling.
Rob, thanks! I used what I had. :dremel:

jamoni:
Version 2.0 of the marking knife:

Bigger, longer tang, different angle of grind.
I don't think this will work, though. The point is about 95*, and it's just not pointy enough. I figure 70* is about right.

Divided he ad:
Hi Mike (found your name from your intro :thumbup: )

Just looking through this and I have a suggestion that may or may not have occurred? I'll admit it seems obvious.... But if left unsaid.....

As bearing sliders have you thought of draw slides? I've got them on all my tool chests and the pull out draw under my workbench.... I think that they would work really well?
I would think that budget can be accommodated by use of a scrapyard (junkyard) or second hand ones from old kitchens etc

All you would have to figure out is a way of shielding them as much as possible from the grinding dust!

I see from your description this is going to expand into a very useful machine. I look forward to seeing it do so :headbang: :nrocks:

IMHO a simple threaded manual feed would be my next fit on the grinder.... Must be really difficult to feed it down lightly for the next cut?

Wishing you luck as requested :thumbup:

Ralph.

jamoni:
Divided Head, Yep!
You hit both nails right on the heads. I'd already decided on drawer slides, if I can find some sturdy enough. My plan is to replace the steel rails with aluminum ones, and mount the drawer slides to those.
I may do the same with the grinder slide, if I can make it lockable somehow.
And the absolute very super next thing to be done is that screw feed. I need way more control over depth of cut. I figure my issues with the edges rounding off is taking too deep a cut, so that the grinder speed is higher when it hits the work, then slows down to hog out the cut. By avoiding those heavy cuts, I get the nice grinds you can see in the pic.
However, right now, it's making me money, so the upgrades'll have to wait for a week or so.
BTW,

Blade:
Hello Jamoni, nice grinder. I have built a couple of belt grinders myself so I know how hard it is to make a grinder on a budget. One good source of a screw to raise and lower the grinder is the screw off of a scissor jack for a car, you could possibly even use the entire jack to push the grinder up and let it back down. Another option is a piece of all thread and a nut.

Another suggestion I would make would be to run a grinding belt instead of a stone. Stones are great for a fine finish but aren't so great at hoging material. If you picked up a 1" x 6" wheel for your grinder and made an idler arm you could buy 2" x 72" belts and split them in half so you would make two belts out of one. You would be amazed at how much faster you could cut by using ceramic media 80 grit belts. I think sears sell a grinder like yours that is allready set up as a belt grinder on one side.

I am guessing that you are making Kiradashis out of the blanks that you are making? Show some pics of your finished product.

Thanks for sharing,

Eddie

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