Renwax and cardboard?

D

darkaether

Joined
Dec 23, 2006
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I had some big cardboards boxes to get rid of so I pulled out several of my Busse's for a slicing comparison. The results were so shocking, I had to be missing something. Particularly with 2 full flat satin 4"s with convex edges on same stock thickness.

I would have expected them to behave similarly, but the one I renwaxed absolutely spanked the one that still had the oil from the factory. That is the only thing I can think of that could have made the difference. Has anybody else noticed this?
 
I think it provided better lubricity against the thick abrasive cardboard. I like the smell of it hehe. RenWax and Eezox
 
I suspect there is more than just the wax influencing the testing. Stabber mentioned one possibility, along with shoulder thickness right above the edge and other blade geometries.

Possible follow-up test to change only one variable at a time. (i.e. use same knife, with & without wax)

(1) Using currently unwaxed knife, test cutting cardboard. Note efficiency and force needed.
(2) Apply Renwax to this previously-unwaxed knife.
(3) Test cutting cardboard. Note change (if any) in efficiency and force needed.

For thoroughness, you could also do a with/without test of the one that currently has the Renwax on it. I think mineral spirits will remove Renwax IIRC. Then you could compare all four fields of the matrix for performance (knife #1 with/without wax versus knife #2 with/without wax).

I would be interested in hearing results of this sort of testing to determine if using Renwax on a knife makes a difference vs *the same knife* without Renwax on it.
 
I think that would be cool. I could do that if I could figure out a cheap way to measure.

There wasn't any sharpness difference that I could tell slicing paper. I only made a few long cuts in the cardboard, with the grain, and now I'm wondering if I just coincidentally caught a few weak spots in the corrogation.

My SHe slipped right through too but I figured that had to do with the weight since I was slicing straight down. It was impressively effortless either way. I was cutting down corners too so the thickness was less of a factor, and actually might have helped by keeping it a little stressed at the edge.

I could have just used a razor but this was a lot more fun. I'll drag them out any chance I get.
 
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