Commercial place putting an edge on a blade

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Commercial place putting an edge on a blade

Post by huccl » 20 Sep 2017, 11:36 am

I'm doing a bit of research for a bit of a DIY project and looking for some clarification.

Say you want to make a blade of sorts. Knife, axe, whatever.

I know most any metal place can laser cut the outline of the knife for you. Who / how would they put the initial edge on the blade though?

I don't get sharpening it, but that initial turning one flat edge into a point.

I could be wrong but it kind of seems like a bit of a specialised task and not like any metal shop will have their 'knife machine' sitting there to run a small batch through for you easy?

Hope I'm making sense here.
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Re: Commercial place putting an edge on a blade

Post by Gwion » 20 Sep 2017, 12:15 pm

Can be done with a surface grinder but that's a big set up job and an expensive machine to tie up for a pretty small job, unless you are doing a serious batch it wouldn't be cost effective to get an engineering shop to do it.

By the way, the terminology you are looking for is "setting" or grinding the "bevel". The "edge" is the final bevel that is sharp. Most blades have multiple bevels being the primary bevel and then the edge is on the secondary or tertiary bevel but some blades do have "zero bevel edge" where the primary bevel extends to and forms the edge.
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Re: Commercial place putting an edge on a blade

Post by huccl » 21 Sep 2017, 4:57 pm

Hey Gwion,

Thanks for the terms.

About making them, I'm not looking to do significant quantities initially. It's really brain storming some ideas, getting some samples in hand and that kind of stuff to see if the concept legs.

At least now I can call a shop and ask for the right thing :lol:
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Re: Commercial place putting an edge on a blade

Post by Tom Foolery » 21 Sep 2017, 7:12 pm

I would try a specialist saw sharpening shop (yes, they are a thing) if there are any in your area. The one I deal with have machinery to put an edge on just about anything and this includes some seriously hard steels used for guillotine blades and CNC cutting tools.
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Re: Commercial place putting an edge on a blade

Post by pomemax » 21 Sep 2017, 7:36 pm

You did look on youtube for setting the bevel on a knife blank some interesting ways to do it on there with quite simple equipment
https://www.youtube.com/watch?v=D6-1EJuJj_E
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