Are saw teeth feasible?

Joined
Jun 15, 2003
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1,500
Or worth the trouble? What do you say when someone asks you to make them one?

Hello all,

I've gotten 3 requests to do a knife with sawteeth this past week alone. I've done them in the past (on my version of the jet pilots survival knfe), and they were a royal PITA to cut. I swore I'd never do them again like that. I copied the square-ish straight tooth design with no set. They cut about as good as the original- which is not good at all. Didn't get a chance to try them out on a downed aircraft, so I'm not sure if they'd of worked or not. I do know they're Not good for wood, and so-so on heavy plastic (scratch one rubbermade tote).

The guys who are asking are all hunters too. One wants it for wood and bone, and the others for bone only. Specifically, they want to cut the breast bone of a white tail deer during field dressing. Personally, I carry Spyderco Spydersaw, and it does a great job. I passed this on to them, but they want a saw backed knife that'll do the job. I said I'd try, but wouldn't make one unless it was economical to do, and it worked.

Has anybody here made, or has seen a knife which could do this effectively?

Here's what I know already:
A knife is thick in relation to a saw. Getting it to cut well-That's gonna be a challenge in itself.

The teeth must have a set so they can be self clearing, and clear a path for the rest of the blade.

Each tooth must have a back clearance ground onto it, so it doesn't drag.

The pitch (TPI) will have to be somewhat low so it doesn't gum up, particularly when cutting bone, but not so low that its constantly snagging. In addition, the entire saw edge is only going to be 3"-4" long.

The rest of the knife will have to be designed to be useable rightside up or upside down. A good grip with a widened pommel is a must.

I want the saw to cut when pulling, not pushing. Better to slip off it then onto it.

Helluva challenge. Any ideas?

Thank you,
Scott
 
Thanks for the link!

Dan and I live 20 miles apart. Can you believe that! Sometimes the answer is right under your nose. We've talked online a bunch, and I've been to his shop twice. I'll have to drop in on him about this. Anyone else care to chime in with your experiences in the meantime?
 
I have made a couple of knifes with saw teeth. I used a cut off wheel that I reprofiled with a 120 grit diamond, just spin the wheel in a lath,mill or drill press. Hold the diamond against it to respape the edge, I t will have to be toushed up frequently. I mounted the blade verticaly on the milling machine, and ground the theeth into the blade, I used a compound angle so every other tooth was the oppisite. I used 15 deg across the spine and 5 deg rake on the teeth. Work so so, I would not do one for myself, Keep meat saw in camp for that purpose.
Leon Pugh
 
One thing I keep thinking of is hollow grinding a short false edge on the spine and serrating that. I haven't seen anyone do this, but someone else must have thought of it... the chainsaw-teeth pattern makes sense... kind of hard to make but easy to maintain.
 
Have you considered starting with a saw blade and making a knife out of it. Just leave the teeth on the spine of the blade.

Jim A.
 
Has anyone wonderered what this has to do with making a knife?
I may be percieved as an antagonist but thast isn't the intent..
Saws are what you buy at Sears....Knives are what you buy from a knifemaker...
 
Has anyone wonderered what this has to do with making a knife?
I may be percieved as an antagonist but thast isn't the intent..
Saws are what you buy at Sears....Knives are what you buy from a knifemaker...

Just trying to please the customer.
Like I said if it isn't economical and doesn't work, I'm not going to do it.

Thanks for your opinion.
 
lol I will chime in as I am one of those he mentioned who would like such a thing. I would like a knife that has saw teeth on the back for bone and/or wood because sometimes I just dont have a saw with me. Sometimes people forget things, sometimes I take my bone saw out of my hunting bag to clean it and forget to put it back in(its happened). Not to mention I have seen it deployed in some knives and it seems to work pretty well. If it isnt pracitcal or possible to make then thats fine. I always thought it would be a great idea but....again to each his own.

Robert Parrish's Sunfish is the knife I got the idea from.
 
A knife is a tool, a saw is a tool. The question is can the two tools be combined to make a better tool (anyone own a Leatherman or other multitool?).

Its been done before. For example, there was a radial arm saw, and a compound miter saw. Someone got the bright idea to combine them, and came up with the radial arm-compound miter saw. Better than either of the originals! I could probably come up with 10 more examples. That's called PROGRESS.

It has been done with moderate success by various makers. I'm looking for ideas that show some ingenuity. Dan's chain saw tooth design was one of those.

I'm going out to the milling machine later to try out an idea or two. I'll keep you posted!

Thanks,
Scott
 
Scott,
I believe I owe you an apology, I wasn't trying to be a smart alec but it sure sounded like it when I read my post.
I've never done a knife with a toothed blade but then there is a place especially in hunting/ dressing game for a saw or toothed blade.
I do mostly slipjoints and some linerlocked folders so don't get the request for such a blade.
I would like to see a toothed blade capable of being used to saw wood or bone that someone has hand made. I would think creating the angles on the teeth to effect a saw cut would be a real challenge.
Dan thanks for the post and picture of yours with chain saw style teeth, I was picturing something like a carpenter's saw blade tooth.
Does yours cut game bones well, and hold its cutting edges well? I would not have thought to do one like that...Nice!
Thanks,
 
Communication is much more than just words. Sometimes its easy to come across in a way you didn't intend. I've done it more than once myself. A day or two later I've read what I wrote and thought WTF was I thinking? You weren't that bad. I got your meaning, and after seeing your style of knives, I understood why.

We're cool. By the way, I checked out your website-Nice stuff. Really top shelf.
Scott
 
Thanks for the links Dan. Very helpful.
We'll hook up when things slow down for you. No rush. I still have to win the big buck pool at work anyway. Trying to find time to spend in the shop, and in the woods, and at the plant. If only I could go without sleep altogether!
Thanks,
Scott
 
Scott
sleep ? you get sleep..:confused: and still call yourself a knife maker :confused: :D :D ;)

guys The problem with any saw that does not have a set in the teeth it will bind on you..
therefore making it good for notching mainly or at the very least causing it to be very hard to cut any depth with it..
the set is basically the tooth being off set to cause the kerf <spelling (cut width) to be wider than the blade body itself..
I'm should some of you know this anyway , just mentioning it to though that wonder about it..
in a knife it's not hard to do..other than overcoming the toughness of the steel
 
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