Justabuyer's FFBM -vs- 2x4s

Tyrkon Lawson

Tyrkon Lawson

Joined
Oct 31, 2003
Messages
8,583
First off I want to thank my brother HOG Justabuyer for letting me try out his modded FFBM. I will let him go into detail on the geometry of this blade but it is WICKED sharp. Here are the results of a series of chopping tests I did tonight on 4 2x4s.

TRIAL 1​


 
good one. The only wood I have are some 2x12's (my motorcycle ramps with traction pads and top and bottom attachments) which are not going to be chopped, and some 4x4's which are for building a stand for my throwing rounds.
 
A you can see from a couple trials what this beast does not chop cleanly through it breaks. But that is the nature of this bad boy. If Justabuyer is okay with it it I'd like to try a couple of more nights as I know my technique could improve.
 
looking good so far. In the cutting competitions, I believe that if the 2x4 breaks it does not count.
 
Bigfattyt said:
looking good so far. In the cutting competitions, I believe that if the 2x4 breaks it does not count.
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That makes complete sense to me. I think the first trial was the closest to true chopping. But I had to add the other 2 as they were just fun. But if I get some more time I will really try for the lowest number of "true" chops without breaking the 2x4s. :thumbup:
 
Tyrkon Lawson said:
That makes complete sense to me. I think the first trial was the closest to true chopping. But I had to add the other 2 as they were just fun. But if I get some more time I will really try for the lowest number of "true" chops without breaking the 2x4s. :thumbup:
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You're an ANIMAL!! :eek: LOL Nice chopping, but mebbe take another look at that demo clip by that guy who chopped through the 2x4 in six chops... IIRC although a good amount a force was used, he didn't seem to "brute force" it. There was more of a refined technique to it. Maybe the angle makes a difference as well? You're hitting that board so hard, I'm wondering that if you used a club, you'd still get 'er done in six to eight whacks, LOL. :D:D BTW, I like that new vid hosting site you're using. :D:thumbup:

...Then again, what do I know??? Check this out! :eek: (Ted Ott/Ott Knives..."Blade Sports cutting competition. 2x4 cut in 1.83 seconds by Ted Ott custom knife maker.")

[YouTube]-oI-z8i41Do[/YouTube]
 
Jaxx: That is just sick. :D I think both technique and blade geometry come into play here. I am nowhere as skilled as those guys. I look to guys like that for clues to better my own chopping. But nevertheless I think our chunks of INFI do pretty darn good for not being "competition" ready. Tons of fun either way. ;)

Maybe I should try to brace a 2x4 like that clip you posted and see how fast the FFBM can do it. It would still probably break the 2x4 at some point. :D
 
Tyrkon Lawson said:
Jaxx: That is just sick. :D I think both technique and blade geometry come into play here. I am nowhere as skilled as those guys. I look to guys like that for clues to better my own chopping. But nevertheless I think our chunks of INFI do pretty darn good for not being "competition" ready. Tons of fun either way. ;)

Maybe I should try to brace a 2x4 like that clip you posted and see how fast the FFBM can do it. It would still probably break the 2x4 at some point. :D
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Cool vids TL you choppin maniac! :D :thumbup:

I think the backing 2x4 will prevent the 2x4 being chopped from breaking.
I think the biggest challenge is a matter of getting a sturdy base and backing 2x4 setup.
The setup in Ott's video barely moved at all.

Keep up the great vids TL... always fun to watch. :)
 
LOL!! That one where you smashed the atoms of the 2x4 in four chops CRACKs me up. I knew I sent this beast to the right guy.
 
Tyrkon Lawson said:
I will let him go into detail on the geometry of this blade but it is WICKED sharp.
Click to expand...

Great vids man.... Woot!

OK blade details. Stripped FFBM obviously. But it has been modified by a knife maker in the following ways. Some additional taper added to the point of the knife to make it more knife like in profile. Convex directly into a zero edge from Saber grind down. In fact the saber grind line is a little higher now.

I did some testing and found the edge to be a little thin like that and prone to rolling when crazy people smacked wood ( BAN - the destroyer of wood) He loves to hear the lamintation of the splinters.

So I reset the edge just a little thicker and polished the convex out some more. I think the knife is just about perfect. So I put it up for this test to prove it.

I have noted from the videos it does not seem to wedge in the wood during chops and looks like it breaks wood away from the cut pretty well. These are also important things when cutting.

THANKS TL for this testing! I lack the strength and endurance to do it myself.

Jim
 
Justabuyer: Thanks a bunch for the extended testing period for this blade. There are a few other things I want to try plus I think I can beat 6 chops if the planets are all lined up. Great fun.

I am at work late tonight for conferences so will most likely do more testing tomorrow unless I get a second wind tonight. But here are a couple of notes:

(1) This convexed FFBM did not get wedged or stuck in the 2x4s nearly as much as my CG FFBM. Huge difference there. Very smooth.

(2) Somewhere in the middle of testing I accidentally started using my CG FFBM and started to wonder why Justabuyer's FFBM was not chopping quite as well as it was a few moments before. Duh. I soon realized my goof and got the right blade back in hand and could feel the deeper cuts again. My CG FFBM still does some mean chopping but there was definitely a noticeable difference when I used the convexed one. I'll try to detail this more in tests to come.

(3) This thread is not meant to be a "competition" thread nor do I put myself on the same playing field as the guys who win such competitions. For me at least this thread is to test out chopping properties of the FFBM. To see how much of a difference, if any, mods add to the knife's performance. I know there are a ton of variables that come into play here but at least we have the same chopper, the same kind of wood from the same source, and the two knives being compared. It's a start at least.

I will have a little more time to test out the convexed FFBM so if there are any suggestions you guys have or things you'd like to see please let me know.

Thanks.
 
Jaxx said:
You're an ANIMAL!! :eek: LOL Nice chopping, but mebbe take another look at that demo clip by that guy who chopped through the 2x4 in six chops... IIRC although a good amount a force was used, he didn't seem to "brute force" it. There was more of a refined technique to it. Maybe the angle makes a difference as well? You're hitting that board so hard, I'm wondering that if you used a club, you'd still get 'er done in six to eight whacks, LOL. :D:D BTW, I like that new vid hosting site you're using. :D:thumbup:
Click to expand...

Ban had asked about the angle variable as well. I definitely notice that my chops go much deeper at certain angles. I do not know if it do to the grain of the wood or some other factor but I definitely notice it. I will try to isolate this in my next series of tests. :thumbup:
 
Great vids Tyrkon. I like the new host site. Fast loading.

I think with a different 2x4 setup you could get through in less than six no problem. Just need something with some stability to hold the 2x4 in whatever position you want to chop it in. I am going to be building a chopping setup for the next NorCal Busse get together.
 
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