pict :
Here in Brazil you can't function in the bush without a machete and a "large knife" is a poor second choice.
Parangs, goloks, and bolos are long knives which are far from poor on cutting light brush. In general they will do it much better than stamped machetes because the edge will be much thinner and the steel of much better quality (edge retention and durability aspects, not cutting ability). There are also modern blades of similar function such as the Patrol Machete from Camillus which in reality has a poor name as it has little in common design wise with a machete. Of course such knives cost a lot more than a quality machete which the high end ones (Martindale) are still ~20$.
backpacker :
My Leuku teamed up with a folding saw only weighs 16.5 oz. The Leuku chops well enough for shelter and fire making and is long enough to baton through anything I want. I just can not figure out why I really need to carry a heavier knife even for an extended stay in the woods.
For limbing mainly (shelter) as a saw does it really slowly and a longer knive is many times faster than the Leuko, or greater reach for brush cutting (shelter, food, clothing). However you could solve both of these by lashing the Leuko to a short pole to make a bill-hook. Here in the winter I would want a stouter knife to handle cutting of ice and in general wood work on frozen wood is a lot harder so you are batoning and prying (tinder mainly) with much more force. But yeah a leuko and quality saw is an excellent combination.
grant4353 :
Ya, to build a debris hut you don't even need a knife. For firewood
you can just use dead wood
You can survive without any knife of course, primitive man did it for quite some time, there is even no need for a fire if you want to get really basic. The question is how difficult do you want to make life for yourself in an already difficult situation. You could as well for example go naked and force yourself to fashion clothes out of vegetation and animal furs. Quality tools like a knife or axe don't make survival a certainty and do need skill and experience to utility them fully, but in such hands will make life a *lot* easier.
Try starting a fire in a very damp situation with and without a stout knife for example, even water logged wood is *rarely* wet all the way through so if you can split it you have dry wood (scrape to make first stage tinder, then split or carve for fuel), however you can easily get enough rain to soak wood which is covered in layers of boughs and other debris. Or just gather some vetegation for food, ropes, bedding or clothing and compare ripped it up with your hands to cutting it with a knife in terms of effort and time spent (not to mention damage to the vegetation which influences cord and other utilization such as baskets and such).
...and if it is too long just stick one end of it in the fire.
And now you have just broken one of the basic rules of fire building which is to have a fire wall around the fire. You generally only do that when fires can not spread such as *very* wet conditions or a lot of snow. Note fire can burn inside of a piece of wood and thus travel down it even if not immedately readily visible on the outside.
V Shrake :
No one even mentioned brush cutting.
The question was open ended, it didn't simply ask which one worked best on thick wood. Brush cutting (1-2" wood and lighter vegetation) is important for shelter construction, fire building, signaling, food, and misc. tools (ropes, baskets, snow shoes). It thus encompasses all aspects of survivial or outdoor living, so should be considered carefully in any such discussion.
As for a *hatchet's*, not axes, cutting performance against a large knife, a good, properly set up hatchet will have an edge very similar to that of a khuk or other large knife. That is to say, a thin, sharp, preferably convexed edge.
The edge angles will be similar, however the edge thickness and overall bit/blade geometry will be very different. Specifically a quality long blade for this type of work will have the edge about 0.025" thick and above this goes into a full grind of 3-5 degrees, the axe above this level (0.025") thickens many times faster than the blade. More specific information can be senn in the reviews as I have plotted the cross sections of a few quality axes and various blades.
A hatchet by the way is simply a type of axe, specifically a small axe.
As we all know, an SAK Rucksack (according to you) is a POS knife because it can't chop down a Redwood. Try matching the tool to the intended job.
The most hilarious part of this astute comment is that it doesn't even fit in with the posts I made in this very thread (let alone to general comments made). Specifically in the above I stated thick wood chopping is rarely necessary and that other use would be more important and for those uses there are better tools, this is the *exact opposite* of the character generalization implied.
Not to mention of course that I carry a Rucksack daily, and have commented many times in the past about its high cutting ability due to the blade geometry, the efficiency of SAK saws, and the utilization of other tools (flat screwdriver to wood chisel), and its review I think is positive.
Of course such comments by V Shrake rarely have anything to do with the reality of what is written.
-Cliff