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GEM PTFE Modification Instructions for OneBlade

(Note: the following modification works for both V1 and V2 versions of the OneBlade. V2 requires clipping the GEM to work in the OneBlade.)

There has been a lot of interest recently in the OneBlade razor. The OneBlade was built specifically to natively take the spineless Feather FHS SE blade. This is an uncommonly used blade, and many people, looking both for diversity in blade choice, and wishing to use the more common spined GEM PTFE SE blade have sought to use this later blade in their OneBlade either as their blade of choice or to add some diversity. Using the GEM has come with mixed results, as the spine must first be removed (see below), but still does not fit the razor perfectly. The despined GEM will not 'lock in' to the OneBlade as the Feather does, as the cutouts on the blade corners match up differently, and the internal blade locks/nubs in the OneBlade push against the GEM blade causing it to bend or 'smile' slightly. This is not an ideal situation in which to use the GEM blade, as the razor was not built for the purpose of putting strain on it's internal locks. Neither is a bent blade ideal. Some, very few users have even reported that the GEM begins to come out of place during the shave, as it is not locked in. We aim to go further in this thread by modifying the GEM to lock in and lay flat, fitting the OneBlade just as well as the Feather.

The purpose of this thread, therefore, is to show and share how a SE GEM blade may be modified to perfectly fit and lock into the OneBlade in a manner that is best for both the razor and the blade. Using the method and tools shown below is safe for you and your razor, and takes a matter of seconds to complete from start to finish. (This is meant to be a reference thread, and if others have methods or tools better even than what I'm showing, please feel free to share.)

De-spining the GEM


This is the most well known part of the modification, but it is essential to be reviewed, as it comes first in the process, and nothing else can be done without removing the GEM spine.

The tool required here is a 'nipper' or pair of pliers (the nipper works best), which should be clamped down at, or just above, the line in the spine. It is also recommended that the cardboard wrapping be left on the blade while removing the spine for safety. See here:

$hRQxLWu.jpg

While the upper spine is clamped down with the nipper, use your thumb and index finger on your free hand to rock the blade to and fro against the spine. This loosens the spine, and you can then pull the spine right off. See an older video on this below:



Clipping the GEM

This part is a little more difficult to explain, but is just as easy in practice. First, you should acquire a 'hand nibbler'. I found mine on Amazon under the title "Nickel Plated Nibbling Tool", and it looks like this:

$xCP5XHC.jpg


For a point of reference here is a picture of a clipped GEM (left) next to a Feather (right):

$zqiZtlx.jpg

The important thing to notice from this picture, is that the GEM should not be clipped any lower than what we see cut out on the Feather. It can be clipped higher (the blunt side of the blade) but not lower (towards the sharp end of the blade). The lower part of the Feather cutout here just about exactly lines up with where we have clipped the GEM. Seeing this is important to realize before the tool is used.

Now, let's look at the blade position in the tool as it's being clipped:

$8XmNoik.jpg

$jFD7LhE.jpg


As we see here, it is essential to clip the GEM just above it's own middle cutout. Do not widen the GEM middle cutout, but clip above it. You will see below, a correctly clipped GEM next to an un-clipped GEM. This should also help to tell you where you should be clipping.

http://i.imgur.com/WEvxzyI.jpg (Click to view image)


A GEM half modified:

http://i.imgur.com/VxPdrDr.jpg (Click to view image)


A GEM fully modified:

http://i.imgur.com/EPMhHh4.jpg (Click to view image)

A fully modified GEM next to an un-clipped GEM:

http://i.imgur.com/GnvcbCS.jpg (Click to view image)


All of this may seem much more complicated than it really is. I have just tried to add as much detail as possible. Once you get it right the first time, a full modification from de-spining to clipping should take around 10-15 seconds, and you will know exactly what you are doing without further reference. Feel free to ask questions for clarifications, or add your own methods or tools to this thread if you've found something you like better.

At last, take the modified GEM, and slip it into your OneBlade with the satisfying "click" that tells you you're locked and loaded. Happy shaves all! :thumbup1:
 
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Thanks for taking the time to put that together.

You mean take that apart.

I have a hard enough time pulling the trigger on an early version Autostrop because I would need to despine a Gem. Not sure if I want to do it for a $400 razor. for that kind of money, I would expect a Barber to come with it to shave me.
 
Don't understand the purpose of the last post.

Len1 spent his time and made a great service to community by writing a very detailed post with photos so people can spend less money and have more choice in blades.

Instead of promptly thanking him or at least saying nothing, there is some sort of abstract complain, addressed to no one.
 
I admit, I am surprised by a business logic of OB owner. He is not a fool and he has an engineering team and they for sure told him or should have told him before he decided to make the design change (to prevent usage of gem), that people will figure out sooner or later how to modify Gem blades and that it's quite simple if not to say trivial. Still he decided to change the design. People cut Feather Ac blades to use in injectors and it's very simple, so it was obvious it can be done to gem blades as wel.
It's his right to modify design, I just fail to see if it achieve the intended goal ( to force usage of Feather SE blades). I personally think oneblade project will be short lived and they try to squeeze more money when they still can.
 
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I have a hard enough time pulling the trigger on an early version Autostrop because I would need to despine a Gem.

Not so, my friend! You can use the same FHS-10 blade used for the OneBlade in an AutoStrop or Valet AutoStrop razor.
 
Not so, my friend! You can use the same FHS-10 blade used for the OneBlade in an AutoStrop or Valet AutoStrop razor.

I think there's one of the very early Auto Strops that will take a despined Gem without clipping the corners, maybe the B1. I have one coming, I'll have to check when it arrives.









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Not so, my friend! You can use the same FHS-10 blade used for the OneBlade in an AutoStrop or Valet AutoStrop razor.

I think there's one of the very early Auto Strops that will take a despined Gem without clipping the corners, maybe the B1. I have one coming, I'll have to check when it arrives.
 
Len1 -

Thanks for a very good post with details even I should be able to follow. Appreciate the lead on the tool too.

Best regards,

Ron I
 
Thank you for all this good info. I'm thinking I need to get a tool to modify my Gem blades for the V2 even though the one I took just the spine off of just gave me a closer and smoother shave than the Feather. I certainly don't want to do any damage to the razor as one stated could happen if the blade puts to much pressure on the razor.
 
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Just bought this on Amazon. It was not expensive and it had a whole lot of great reviews compared to the others i found.
 
Dragonsbeard are you stil using this tool to modify the gem blades ?
No I actually returned it. I found that a cheap $7 hole punch on Amazon works much better. Also I’m in between using that and just cutting the ends of the razor blade off with a simple pair of scissors. You know the little part that sticks out well you use one blade first to measure how much to cut off and make that one your template for all the others. This way you don’t have to worry about punching a notch on both sides of the razor that match up perfectly. There’s a really good YouTube video that Scott from North Shore razor posted that shows how to do it. He’s a really big fan of Gibbs Adjustables also.

Hope that helps.
 
No I actually returned it. I found that a cheap $7 hole punch on Amazon works much better. Also I’m in between using that and just cutting the ends of the razor blade off with a simple pair of scissors. You know the little part that sticks out well you use one blade first to measure how much to cut off and make that one your template for all the others. This way you don’t have to worry about punching a notch on both sides of the razor that match up perfectly. There’s a really good YouTube video that Scott from North Shore razor posted that shows how to do it. He’s a really big fan of Gibbs Adjustables also.
Can you be more specific? What size punch did you get on Amazon and the make/model?
Hope that helps.
 
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