Number 2 done! Need some help with micarta **Updated**

JGguns

Hobbyist here to learn
Joined
Nov 15, 2009
Messages
407
Well this is my 2nd knife out of steel. And my first time using micarta. I am having trouble getting a even finish on it. Most of it will look good but there will be one or two small spots where it looks like the the resin just melted instead of sanding. It was all good until I hit it will 220 grit and higher. I was using my coote grinder on 900 rpm's to finish it. I went up to 400 on the grinder and then finished by hand with 600. Can any one tell me what I am doing wrong?

As of the knife, it's 1080+ steel, flat ground with a 25 degree edge. I'm happy with this one. I made a few mistakes but in the end I think it turned out nice. Right now there is a 400 grit machine finish, but I think I am gonna go to a 600 grit hand rub... Let me know hat you think fellas. Oh and also this will be my first knife sold. I gotta start covering some of my costs so a buddy bought this one for 38$ with a kydex sheath...

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Not bad for #2,although it has a bad case of BHS (blocky handle syndrome).We have all been there.Tape up the blade and clamp it in your vise and take sandpaper and shoe shine the top and bottom of the handle to about half the thickness it is now.you will be amazed at how much better it will feel in hand.
Keep at it your doing fine.
Stan
 
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Good job. Like stan stated, put some comfort into that handle and round those edges over. You can also taper the scales thinner to thicker from front to back
 
Haha I knew this would come up but believe it or not this was requested by my friend. I told him I could round it off but he said he wants it like this.

Thank for the tip Sbuz. Why shoe shine?
 
He means making an inverted horseshoe shape with the paper and then going back and forth very quickly to take off material in a U shape. you can't use it too much, but it gets material off quick.
 
He means making an inverted horseshoe shape with the paper and then going back and forth very quickly to take off material in a U shape. you can't use it too much, but it gets material off quick.

Exactly and it will also help to keep both sides even while removing material,you have a lot of control and still remove material quickly.
Stan
 
He means making an inverted horseshoe shape with the paper and then going back and forth very quickly to take off material in a U shape. you can't use it too much, but it gets material off quick.

Haha wow I am a fool. Thanks for clearing that up.
 
I agree with Stan. Here is a high highly detailed and technical diagram I did. ;)
Simple enough you would think but everybody does it when they start it seems and some have trouble getting past it. :(

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You can't expect to be doing very good work to begin with. Do your best each time and the results will get better even if very slowly as happens for some of us. Frank
 
For a second knife, that isn't bad at all.

Some tips and areas to work on for your next knives.

Handle:
The block handle has been addressed, but let me add that a small bit of curve makes a huge difference in the looks and feel of a knife. If you look at Patrice's two shapes, even the blocky one would look and feel much better if the straight sides and top were curved just a bit. Also, a perfect oval, as Patrice's second shape shows, is good, but a slightly better fit for the hand is more egg shaped. Even if left blocky, the bottom should be a little narrower than the top.
My simple way of explaining this to young men is - This is why Victoria's Secret models look better to most people than Russian Women Weight Lifters.

Blade:
The blade isn't a sharpened piece of steel. To look ,feel, and work properly it need "flow" in all directions. You did a good job of making the bevels high, and curving the handle into the spine. Making that curve a bit smoother toward the tip, and bringing the blade edge up to the point a little less sharply will make a better looking and cutting knife. The place where you need to really add something is in the thickness. The blade should have a "Distal Taper" ,which means it should taper thinner as it goes toward the point from the ricasso ( the place between the handle and where the plunge line is). This taper makes the blade look better, and improves balance and cutting efficiency.
Also, unles there is a reason for a blade to be wide (as in a chopping knife), the blade should be a bit less wide than the one you made. It would cut the same, but will handle and look better if that knife was about 1/4" narrower.

Micarta:
Look at the top view of your handle....notice how the two sides don't match?
That is because Micarta has a grain and direction to it. You must make sure the scales are oriented with the same sides out and up on each side. Marking the insides with arrows can help prevent putting them on wrong.
If cutting scales from a larger sheet of Micarta, make sure all are cut on the same orientation, and mark the sides.

Handle finishing:
All handle work should be done with the blade well taped up.
Micarta, and most handle materials, don't like high speed, heat, or pressure. They will burn if any of these are used. It is hard to keep the belt speed slow on many grinders. Fresh belts will help keep the heat down. After basic shaping with a 220 grit new belt, hand sanding is often the best method. Don't forget that files and rasps are excellent tools for handle shaping. Go slow, and take a little off at a time. It is far easier to take a little more off than to put some back on.

The Whole Package:
A knife isn't an assembly of a handle, guard, and blade. It is a marriage of these elements. It should flow from one to the other in a smooth and graceful movement. A even and gradual taper from the butt to the tip, and some gradual curve in profile along that path will make a knife "POP". Looking at the knives in knife books and The Gallery on BF should give you some ideas about how to accomplish this "flow".
Again, I will use my female analogy - Dolly Parton, Jessica Stam, and Elizabeth Taylor all look great, buy putting Liz's face on Dolly's chest, over Jessi's hips and legs would make a hideous looking woman. All the parts need to match and "flow" together.
 
Stacy I really appreciate the input. I will definitely work on the things mentioned. Thanks for taking the time and giving me some solid constructive criticism. I reworked the handle a good bit and rounded out the hand alot more. Im updating the original post with more pics.
 
Thanks!

Oh an I figured out why I was getting a crappy finish. I wasn't spending enoUgh time on each grit of sandpaper. Basically wasn't getting out all of the 80 grit scratches. So when I was sanding with a finer grit the dust and slurry was collecting in the scratches cause it to look bad. Now I got a nice even finish with 600 grit hand sanding.
 
You're a quick study :thumbup: When you're pretty happy with the handle shape, take your knife and go to work on an old chunk of 2x4. This isn't a test of chopping through it in 3 or 4 cuts, or even how well it holds an edge at this point, but simply of how comfortable the knife really is. Take your time, but do it all in one session. If you can cut/whittle/hack through a 2x4 at least once without getting hot-spots or blisters on your hand, you have a good handle.
 
You're a quick study :thumbup: When you're pretty happy with the handle shape, take your knife and go to work on an old chunk of 2x4. This isn't a test of chopping through it in 3 or 4 cuts, or even how well it holds an edge at this point, but simply of how comfortable the knife really is. Take your time, but do it all in one session. If you can cut/whittle/hack through a 2x4 at least once without getting hot-spots or blisters on your hand, you have a good handle.

Well I took it out and did some wood work with it. It did well at carving and feather sticks. I chopped the soft 2x4 okay. But this knife has a over all length of 6.5 inches so it just does not have the heft it needs to be a good chopper. I did not get any hot spots at all. However I did realize that I need to buy a dang checkering file (expensive little suckers) for jimping on the top spine. It would have helped with getting leverage. The down sweep on the handle really helps for getting leverage.

Over all I am happy with this knife.
 
Sounds good. I realize it's not a chopper, that's not the point at all. It's just about using the knife for an extended time.

FWIW the 2x4 tests people typically employ with 8-10" blades really don't mean squat, unless you do it several times to check edge retention. Any knife that size should easily chop through a 2x4 in a few strokes, and (unless it's really thin like a machete or chef's knife) split an 18" length of it lengthwise too, so don't get overly excited about that either. ;)
 
I did some research when looking for checkering files a couple of weeks ago. The best price/ place I found $37.87 for a Grobet Pillar checkering file. It is a 6" cut 00 file, P/N 31040. The USA rep is b2bprofessionaltools.com. You can get their phone no. from their web site. The very friendly gentleman I talked to gave me a coupon discount of 10 or 15%. As of last Monday, they were still out of stock but expecting them any time.
 
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