Standing Paper roll cut *video*

David Schott

David Schott

Joined
Sep 27, 2004
Messages
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I cannot make this cut for the life of me. I am trying to cut a single sheet of newspaper that is rolled and have the bottom half stay standing. These rolls are light and wobbly! Iam using my camp knife I posted in the gallery recently. I did 5 water bottles, 2X4's, split some cans, but this is the closest i've come to leaving the paper tube standing.....how do you pull this cut off? Technique? Thin blade? My edge will easilly shave and pushcut newsprint and has been polished....
http://www.schottworld.com/camp/paper.MPG
 
hey

well there is lots you can do to improve the cut.... firstly ...is your knife sharp..

can you clean shave a 1/2 inch wide strip of hair off the back of your hand in one light pass... ( don't cut yourself though)
-- if not then you need to sharpen and strop

or.. you can test the blade edge for sharpness by wetting your thumb nail.. then litely run the blade edge down it vertically.... if it feels smooth then its not sharp....but if it bites into the nail by itself.. ( you'll feel it cutting in) then thats sharp

now.... make sure you cut on a diagonal..... if you base ball the cut, more then likely the cylinder will fold and tear..... not a clean cut

- make sure your wrist doesn't roll in the cut

- hit it just before the sweet spot... and put abit of draw...

remember the cylinder should only be one page thick.... no doubling up..

after you finish this..... move up to cig pape's

happy cuttin

Greg
 
Blade is plenty sharp. Shaves and pops hair, nail bites instantly and can fillet ink off a maazine page. Edge is simichrome strop polished....

I think my problem is 99%technique. I need to practice a draw as I cut....
 
hey......right on bros

if the knifes sharp..... its just the technique......

i couldn't find my old pic's......... but i found some other pics of a paper cut

cut


see the diagonal on the paper cut...

take care
Greg
 
You should be above 45 degrees.

Your problem is that you have no place to "catch" the blade. So you are angling your swing too flat...to avoid smacking the furniture, etc.

Try this.

Roll the paper into a tube about 1.5" - 2.5" in diameter. Put in on a 2x4 with plenty of board to the left of your tube. Come down on it at around 50-60 degrees and aim to sink the knife into the board (best scenario would be to have this board clamped to the end of a table). When you can do the cut right, then move the tube to the end of the board so that it's at the corner, and try again.

Aside from technique and sharpness, you do have to consider edge geometry. How thick is the edge where the bevel starts? what angle is the bevel set at? Also, what's the blade profile? Is it a recurve? or is it a belly-ed blade...?
 
Holy smokes!!! that's very impressive..even if the tube fell over.

Wow!

Please post a new vid clip when you get this cut figured out.

Sorry that I couldn't help.... it looks like you are very close!!

-Rob
 
heres some more cuttin, done awhile back

cut


some more cuts


well... sounds to me like your blade is primo... just need abit of practice...


how bout others put up some cutting pics.... there's lotsa sharp knives out there.... :D

Greg
 
Greg Obach said:
heres some more cuttin, done awhile back

cut


some more cuts


well... sounds to me like your blade is primo... just need abit of practice...


how bout others put up some cutting pics.... there's lotsa sharp knives out there.... :D

Greg
Click to expand...
Greg
I see you were talking about Arkansas stone with thi, I know the guy that started and owns the company. have you tryed to get stone from him?
Mr hall is a great guy to talk to too.
take a look http://www.hallsproedge.com/
 
thanks a bunch.... i'll definitely pick up one of those stones from Mr. Halls site..


Daniel: cool vid's and super awsome sharp blades..


take care
Greg
 
Ok....got an idea...

Now that I can see the knife and the hand holding it....

Knife looks good, btw. :thumbup:

I think your sabre grip is what's holding you back.

Try it with a pinch grip and see how that works. What you are looking for is a little more action in the wrist. The sabre grip locks your wrist in place. A pinch grip will allow you to "snap" it as you go through the material. Not an exaggerated snap...a subtle snap.

You could also try a hammer grip, but I think the pinch grip will be better for you.

I have done this and it is not easy at first. I went through a lot of rolls before I got it right...

Looks like your cuts are clean. Sounds good too.
 
ok....back from the shop.

sometimes "just doing it" gets the memory jogged.....:foot:


attachment.php



One thing I forgot to say is that you need to make sure you have the blade angled properly. Both "against the tube" and "in the line" of the cut.

Make sense?
 
Cool! I wil try some more....the cuts got sooooo much cleaner when i tried a sharpening trick and glued a piece of simichrome covered leather on a sharpening jig and polished the edge.

I will try more cuts and grips....

Soooo close.....
 
Daniel Koster said:
You should be above 45 degrees.

Your problem is that you have no place to "catch" the blade. So you are angling your swing too flat...to avoid smacking the furniture, etc.

Try this.

Roll the paper into a tube about 1.5" - 2.5" in diameter. Put in on a 2x4 with plenty of board to the left of your tube. Come down on it at around 50-60 degrees and aim to sink the knife into the board (best scenario would be to have this board clamped to the end of a table). When you can do the cut right, then move the tube to the end of the board so that it's at the corner, and try again.

Aside from technique and sharpness, you do have to consider edge geometry. How thick is the edge where the bevel starts? what angle is the bevel set at? Also, what's the blade profile? Is it a recurve? or is it a belly-ed blade...?
Click to expand...
I hope you are better at rolls than cans??????:D :D
 
yes....the can threw me for a loop....works best semi-horizontal....whereas this and the rope are 45 and above.


:p :p :p
 
nice cutts...

and excellent video...
-- only thing i can think of that may also help is to buff the upper part of the blade so there is less drag.... (and wipe down with alcohol)

man... theres nuthin like a sharp knife... :D

Greg
 
OOO good call on the blade finish. Ive been abusing the knife so had a 200 grit finish.....i will try to knock that up to at least 800 and do this again.....also using a pretty normal range edge bevel rather than the watermelon seed convex edge many cutters have...

I will get this...just a matter of when.....

Then i'll move on to tin cans, which seems much harder....
 
tin can is easier for me. as George alluded...the first time I tried it, I missed the can completely. It was hilarious.

let me clarify...tin can filled with water is easier. empty tin can is tougher. top-to-bottom on a can is midway between.

but the paper roll was harder for me than any of the above. (still is...takes practice and trial/error)
 
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