#241

Member
Chicago Suburbs
metal_shavings 

The reason you get enhanced audible feedback with Derby blades is that they are thinner than most blades. Many DE razor blades are 0.1mm thick. Derby Extra blades are thinner at 0.09mm. Prior to 2016, Derby was at the 0.1mm spec. While a thin blade CAN be very sharp, the durabiity of the edge might be affected. 


Single Edge razor blades are about double the thickness of a DE blade. Thus, they offer limited audio feedback but last far longer than DE blades.

A similar situation exists with straight razors. They are available in various grinds from extra-hollow, to full hollow, to half-hollow, to quarter hollow, to full wedge. I have a Boker Extra Hollow blade and it is so thin that it gives a lot of audible feedback. Full hollow blades can also be "singing blades". Usually half and quarter hollow blades give limited audible feedback. A wedge blade gives essentially no feedback.  I tend to like the thinner blades with audible feedback, but the downside is that they need to be refreshed more frequently.

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#242

Mike Distress
New Jersey
(12-28-2023, 06:51 PM)RayClem Wrote: metal_shavings 

The reason you get enhanced audible feedback with Derby blades is that they are thinner than most blades. Many DE razor blades are 0.1mm thick. Derby Extra blades are thinner at 0.09mm. Prior to 2016, Derby was at the 0.1mm spec. While a thin blade CAN be very sharp, the durabiity of the edge might be affected. 


Single Edge razor blades are about double the thickness of a DE blade. Thus, they offer limited audio feedback but last far longer than DE blades.

A similar situation exists with straight razors. They are available in various grinds from extra-hollow, to full hollow, to half-hollow, to quarter hollow, to full wedge. I have a Boker Extra Hollow blade and it is so thin that it gives a lot of audible feedback. Full hollow blades can also be "singing blades". Usually half and quarter hollow blades give limited audible feedback. A wedge blade gives essentially no feedback.  I tend to like the thinner blades with audible feedback, but the downside is that they need to be refreshed more frequently.

Oh, OK. That's good to know. I am by no means an expert, but I do have some familiarity with straight razors. The idea of using one is what kind of got me started on this path. I have always seen the term "singing hollow". I had done some research on the different grinds and I think points and things of that nature. That's another rabbit hole I really can't afford to go down! I am still fascinated by them. I just have a shavette for the time being.

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#243
(12-28-2023, 07:18 PM)metal_shavings Wrote:
(12-28-2023, 06:51 PM)RayClem Wrote: metal_shavings 

Oh, OK. That's good to know. I am by no means an expert, but I do have some familiarity with straight razors. The idea of using one is what kind of got me started on this path. I have always seen the term "singing hollow". I had done some research on the different grinds and I think points and things of that nature. That's another rabbit hole I really can't afford to go down! I am still fascinated by them. I just have a shavette for the time being.

Oh don't worry about cost. Just jump right into the Rabbit Hole of straights. You only need 2 or 3 razors, a strop or 3 and a few years to invest in learning to hone. Thats all. Nothing bad for a young man. LOL.

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#244

Member
Chicago Suburbs
Today’s Shave- Face-off between Personna Lab Blue and AccuThrive Prep Blade

Today’s face-off was made possible by a generous donation by an anonymous donor. Thanks to whomever made the donation.

If you do not want to take the time to read some of the history of these blades, you can skip down to the review section.

Both the Personna “Comfort Coated” Lab Blue and AccuThrive Prep Blades were manufactured by AccuTec Blades in Verona, VA. The company also has a facility in Mexico. AccuTec was once a part of American Safety Razor Corporation. The company traces its roots back to 1875 when Star Razor released the first safety razor. The company has operated in Verona, VA since 1954. It is the sole producer of razor blades remaining in the USA.

American Safety Razor Company was formed from the merger of Gem and EverReady. Later they merged with Star Razor to form American Safety Razor Corporation. As years passed, they acquired Pal Blade company, bringing the Pal, Treet and Personna brands to the fold.

The fortunes of the company went through various transitions being acquired by Phillip Morris and later Energizer Holdings which also owned Schick/Wilkinson Sword. In 2015, Energizer decided to spin off the personal care products as Edgewell Personal Care. However, the plant in Verona, VA primarily produced products for industrial, laboratory and medical uses. That facility was purchased by investors who renamed it AccuTec blades. However, due to the previous association with Personna, many products continued to be marketed under the Personna and Pal brands.

Fast forward a few years and AccuTec decided to rebrand its medical blades under the AccuThrive brand and industrial/trade/laboratory products under the AccuForge brand. However, they will still continue to sell some products under the Personna and PAL brandS. The “comfort coated” description is also being changed to Microcoat. I do not know if the actual coating process or thickness has changed.

I always believed that the blades produced for laboratory use commonly known as Personna Lab Blues and the Hospital Use blades commonly known as Personna Med Prep blades differed only in the extra cleaning and packaging steps needed to insure the blades were safe for hospital use. Since the Med Prep blades are four times more expensive than the Lab Blue blades, I doubted that the extra cleaning steps would affect blade performance enough to compensate for the difference in cost. However, there are a number of shavers who claim that the Med Prep blades are significantly better for shaving than the Lab Blue blades. I plan to put that claim to the test with today’s face-off shave.

*********************************** Blade Review Starts Here******************************

I began today’s shave with the Voskhod blade in the Karve C-plate Stainless razor. After a few strokes, I replaced that blade with a fresh AccuThrive Prep blade. I installed a Personna “Comfort Coated” lab blue blade in my Karve C-plate brass razor. I started by using the stainless razor to shave the left side of my face and the brass razor to shave the right side.

As expected, the Voskhod blade was still mid-sharp with moderate blade resistance with my two-day beard. The Med Prep blade was significantly sharper with minimal blade resistance. Unfortunately, the Lab Blue blade was horribly dull. It tugged painfully at my beard. The blade did become sharper as the coating wore off, but the sharpness on the WTG pass was a 2 level. The Med Prep blade was so superior that I decided to abort the evaluation of the Lab Blue blade and finish the shave with the Med Prep.

The prep blade was sharp enough to achieve a near-BBS shave, but when applying witch hazel after the shave, there was significant feedback on both sides of my face, not just the one where I started with the Lab Blue.

Thus, I am rating the AccuThrive Super Med Prep blade as 4.5 on sharpness, but only 4 on smoothness. I am rating the Lab Blue blade with the same 3 sharpness / 3 smoothness rating as the previous evaluation, but I was tempted to rate it even lower since the WTG pass was so uncomfortable. The only way I can use the Lab Blue blades would be to cork them or strop them before use. They are not worth that effort since there are many alternatives that do not require this extra step.

Thus, for those who insist upon a “Made in USA” blade, I would recommend the AccuThrive prep blade. They are a significant improvement over the Lab Blue blades. However, they are rather expensive. There are plenty of alternatives from other countries if “Made in USA” is not a requirement.

After evaluations are complete, I will be including any remaining Lab Blue blades in a PIF. They are just not suitable for my beard.

The evaluation spreadsheet has been updated with the results of today’s shave.

The shave on Sunday will be with the Jaguar 8094 platinum coated blades. Although Jaguar is based in Germany, I understand the blades are produced by Lord in Egypt. The Lord Platinum Diamond Edge blade performed well, so I hope these will as well.

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#245
Interesting and falling into the YMMV category:  I've been using the AccuThrives for this week and find them to be both smooth and sharp.  Very smooth.  Smoother than, say, the KCGs (which I like a great deal, fwiw). But then my experiences also are often in the YMMV category since a GSB is my all-around most used single and favorite blade..  But truly appreciating and reading each of these reviews with interest!  Keep going!

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#246

Member
Chicago Suburbs
(12-29-2023, 10:03 PM)Lesser Wrote: Interesting and falling into the YMMV category:  I've been using the AccuThrives for this week and find them to be both smooth and sharp.  Very smooth.  Smoother than, say, the KCGs (which I like a great deal, fwiw). But then my experiences also are often in the YMMV category since a GSB is my all-around most used single and favorite blade..  But truly appreciating and reading each of these reviews with interest!  Keep going!

Yes blades tend to be YMMV due to many different factors. While I can use Gillette Silver Blue, they are neither sharp enough nor smooth enough to make it into my normal blade usage. If you like the GSBs, then the AccuThrives should work as well or better. I do enjoy the King C Gillette blades, but I wish they were available in bulk packs. I hate paying the upcharge for retail packaging of individual tucks (10 blades).

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#247

Mike Distress
New Jersey
(This post was last modified: 12-30-2023, 04:30 AM by metal_shavings.)
(12-30-2023, 03:08 AM)RayClem Wrote:
(12-29-2023, 10:03 PM)Lesser Wrote: Interesting and falling into the YMMV category:  I've been using the AccuThrives for this week and find them to be both smooth and sharp.  Very smooth.  Smoother than, say, the KCGs (which I like a great deal, fwiw). But then my experiences also are often in the YMMV category since a GSB is my all-around most used single and favorite blade..  But truly appreciating and reading each of these reviews with interest!  Keep going!

Yes blades tend to be YMMV due to many different factors. While I can use Gillette Silver Blue, they are neither sharp enough nor smooth enough to make it into my normal blade usage. If you like the GSBs, then the AccuThrives should work as well or better. I do enjoy the King C Gillette blades, but I wish they were available in bulk packs. I hate paying the upcharge for retail packaging of individual tucks (10 blades).

Though I haven't used them yet, I picked up the King C Gillette blades. I only grabbed them because I had a three dollar coupon for them. When I first got them I thought, "wow that is a pretty nice package". And it is. But I am totally with you on paying for it. It also made me wonder how much of the cost of the blades was to pay for the actual packaging. While nice, it is completely unnecessary, at least to me, for two tucks of razor blades. Costly and also wasteful in my opinion.

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#248

Member
Chicago Suburbs
(12-30-2023, 04:01 AM)metal_shavings Wrote: No I haven't used them yet, I picked up the King C Gillette blades. I only grabbed them because I had a three dollar coupon for them. When I first got them I thought, "wow that is a pretty nice package". And it is. But I am totally with you on paying for it. It also made me wonder how much of the cost of the blades was to pay for the actual packaging. While nice, it is completely unnecessary, at least to me, for two tucks of razor blades. Costly and also wasteful in my opinion.


AFAIK, the KCG blades are the only ones that Gillette does not sell in bulk packaging. With KCG in retail stores they are going after the same folks to whom they sell cartridge razors, but who have grown tired of paying $35-40 for a dozen cartridges and consider paying $6 per 10 blades to be a bargain. Since I know I can get some blades as good or better than the KCG for a lot less in bulk, I am not fooled by the fancy packaging. I often stroll down the men's shaving aisle at my local Meijer store. Men staring at the blades often look like a sheep being led to slaughter. They have no clue.

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#249

Member
Seattle
FYI...I now have several shaves with the King C Gillette blades made in China. IMHO, for my face, technique and the razor I used...the Chinese KC Gillette blades have been equal or better than the Russian made KC Gillette blades (PPI). These have been the best blades I have used which are manufactured in China...which says something for Gillette quality control. I did not expect this result, and quite frankly I am still surprised. I recommend that Ray do a similar comparison between the Russian vs Chinese KC Gillette blades. If nothing else, it will be a sanity check for me. By the way, the Chinese blades were purchased with the $3 coupon on Amazon...so I did not pay full price. I am curious if anyone else has made a similar comparison as I have, but I still highly value Ray's opinions and insights...and hope he makes this comparison.

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#250

Mike Distress
New Jersey
(12-30-2023, 02:50 PM)Captainjonny Wrote: FYI...I now have several shaves with the King C Gillette blades made in China. IMHO, for my face, technique and the razor I used...the Chinese KC Gillette blades have been equal or better than the Russian made KC Gillette blades (PPI). These have been the best blades I have used which are manufactured in China...which says something for Gillette quality control. I did not expect this result, and quite frankly I am still surprised. I recommend that Ray do a similar comparison between the Russian vs Chinese KC Gillette blades. If nothing else, it will be a sanity check for me. By the way, the Chinese blades were purchased with the $3 coupon on Amazon...so I did not pay full price. I am curious if anyone else has made a similar comparison as I have, but I still highly value Ray's opinions and insights...and hope he makes this comparison.

I have not used my King C. Gillette blades yet, but I did also buy them with the same coupon. However, I hope to use one soon as I have a few blades now that I'm looking to try for the first time. I will leave the comparisons to RayClem.

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