2 Attachment(s)
End of first test round - results
We finished the first round of test shaves.
After some consideration we decided to hone the razors with the following progressions:
Razor 1: DMT1200 till HHT positive / 100 laps on clean leather
Razor 2: DMT1200 till HHT positive / 100 laps on Coticule A
Razor 3: DMT1200 till HHT positive / 100 laps on Coticule B
Razor 3: DMT1200 till HHT positive / 100 laps on Coticule C
All coticules were used with water only (+ a drop of dishwashing soap)
As explained before, there are 2 groups of 4 razors and they are randomized in order to do all shave tests without knowing which razor received which treatment. A standardized form is used to keep track of results. I've attached a picture of the Coticules.
The first results are not impressive. With exception of the DMT-edge, all razors performed more or less the same: they felt smooth to the face, rather promising with the grain, but not living up to that when going against the grain. There was a very mild pull. No post shave irritation. All within acceptable limits. The real downside was closeness. The razor left something like a 5'O clock shadow. (We decided up front to do one pass WTG and one pass ATG, and leave it there)
The DMT edge performed similarly, but with a bit more pull and some mild irritation. Closeness was the same. (I compared my well used DMT to a new, freshly broken in, DMT recently. The difference between those two was strikingly: The new DMT was much coarser, even after lapping a coticule with it and honing razors all night. Under magnification, both scratch patterns looked very different, we even wondered for a while if the new one had a defect.)
Trying the interpret the results, I'd say that the Coticule edges were all (equally) smooth, but they all lacked keenness. I suspect the edge width of the DMT being not fine enough for great shaving results. The coticules performed well on polishing the bevel, but not on refining it. I have banished the Belgian Blue to my woodshop some time ago, assuming it could not do anything that the Coticule couldn't do better. I suspect to improve the keenness of the above honing paradigm, we need to add some mediator between the DMT1200 and the coticule with water. Could be a coticule with slurry (but that would introduce the slurry-effect in the process), or a DMT-8000 (not in our possession), or the Belgian Blue (reported to display less of the slurry-dulling effect than his big sister Coticule). In a later phase we'll compare those three possibilities in one experiment, but for now, we are focused on the differences between the three Coticules.
Hence, for experiment 2 the honing plan is this:
Razor 1: DMT1200 till HHT positive / 50 laps on BBW
Razor 2: DMT1200 till HHT positive / 50 laps on BBW/ 100 laps on Coticule A
Razor 3: DMT1200 till HHT positive / 50 laps on BBW/ 100 laps on Coticule B
Razor 3: DMT1200 till HHT positive / 50 laps on BBW/ 100 laps on Coticule C
All coticules are used with water only (+ a drop of dishwashing soap). The Belgian Blue Whetstone is used with a slurry (milk-like consistency).
This second experiment is still in its early stages, but the first results show a very clear improvement in closeness of the shave, and also seem to reveal some differences between the coticules. It is too soon to draw any real significant conclusions, though.
regards to all,
Bart.