IvanTheTroll
IvanTheTroll 02 Jun 2019
450

Up next


How to use ECM to rifle a barrel - DIY barrel rifling - Project ButWhatAbout

 195204 Views
In General

In this video, I touch on all the components of my rifling setup. Between this video (the most important part of the tutorial), and the tech writeup (linked below), other folks (it could be you!) can replicate my results.


Complete ECM DIY Barrel Package + Tutorial:
https://lbry.tv/$/download/Pro....ject-ButWhatAbout-EC

email me: ivanthetroll@protonmail.com
Keybase: IvanTheTroll

Show more

RockApe
RockApe 2 days ago

Can 6mm 3D printer guide rods be used for boring, chambering etc? According to the description the ones I'm looking to order are 'chromed' - just wondering if that would make a difference compared to just mild steel. Alternatively, can stainless steel be used?

   0    0
Fraserjb
Fraserjb 18 days ago

no I can't ,and by the way could I down load the Glock auto sear? and how?

   0    0
Fraserjb
Fraserjb 1 month ago

it can not open and download now

   0    0
IvanTheTroll
IvanTheTroll 1 month ago

Should be fixed now.

   0    0
sten
sten 1 month ago

It would be great if you could send TheIdahoanShow guy one of your barrels to do a shooting comparison video! His button rifling method is also about this inexpensive and simple so it would come down to accuracy

   0    0
IvanTheTroll
IvanTheTroll 1 month ago

His setup is more expensive and more complex.

   0    0
sten
sten 1 month ago

If I understand correctly you can't use ecm to bore the pilot hole that the rifling mandrel/electrode goes into? (Or it would take forever?) Therefore you have to start with a thick walled hardened tube. If so that limits the types of barrels you can make, no locked breech pistol barrels because those have to start out as billet for all the tilting ramps etc that go under the bore. And I infer that the precision of the pilot hole is important because ecm just erodes equally on the whole surface -it doesn't even out the irregularities in a badly drilled hole it offsets them to a wider diameter.

   0    0
IvanTheTroll
IvanTheTroll 1 month ago

You can drill with ECM, you just need a CNC setup to control the drill rate. You clearly have little clue what you're talking about, you can make any number of locked breech actions using a simple tubular barrel - do go take a look at the two-part hi-power barrels. By no means to pistol barrels need to start out as billets - you've got to be able to think creatively to make guns yourself. ECM cuts based on a inverse radius squared function, so it will smooth out irregularities.

   0    0
sten
sten 1 month ago

Does ecm do sharp corners very well? Can you make it so the lands are very thin with sharp edges like a button rifled barred? Is there a conductive uv printer resin that could print an electrode, or could a metal plated 3d printed part be an electrode? Then maybe you could also cut engravings, locking lugs in a slide, other complex cuts with ecm instead of milling? sorry a lot of questions but trying to understand all the practical possibilities of ecm metalwork!

   0    0
IvanTheTroll
IvanTheTroll 1 month ago

Why would you want stress risers in your barrel when you can avoid them? You can ECM nearly any shape that you can mask off with a part you can print - you don't need to print conductive materials and do a bunch of whiz-bang bullshit to make it work. Please do go actually ECM something before making extreme conjectures.

   0    0
Redbeard762
Redbeard762 2 months ago

It would be interesting to re-bore and re-rifle an old "shot out" barrel using this method

   0    0
bennytheblazer
bennytheblazer 3 months ago

I'm really impressed but I'm of a slow mind, is there some book you can read on this?

   0    0
xamdaM
xamdaM 4 months ago

I am impressed, I have been EC Machining for some years now. I find high power constant current PSU's (Buck+/-) the best and most consistent.
If You, like I am sure you do as well, know a bit about Electronics, I am currently busy to integrate whole electric/electronic/mechanical setup like the PSU, pump, pressure, temperature, saline conductivity sensor monitoring using PI/Arduino.

Dasvidaniya ;)

P.S.: Drop me a line if You like.

   0    0
IvanTheTroll
IvanTheTroll 4 months ago

It would be cool to see an all-in-one ECM desktop unit.

   0    0
cmurry
cmurry 9 months ago

Do you think it would be beneficial to cut only one groove at a time, then rotate the mandrel? I guess kind of like ram/sinker edm...

   0    0
cmurry
cmurry 9 months ago

Have you tried a stainless barrel yet?

   0    0
IvanTheTroll
IvanTheTroll 9 months ago

No, but ECM works on stainless.

   0    0
cmurry
cmurry 9 months ago

Cool AF! Always thought EDM would make great barrels, never heard of ECM.

   0    0
IvanTheTroll
IvanTheTroll 9 months ago

EDM barrels would be very hard. ECM is where it's at.

   0    0
bullmtl
bullmtl 9 months ago

@IvanTheTroll: Wouldn't coolant flow control depth of hardness?

   0    0
bullmtl
bullmtl 9 months ago

I am assuming that SS would cut more slowly with ECM.

   0    0
bullmtl
bullmtl 9 months ago

So if ECM were used, control of depth is achievable and a finishing button could finish?

   0    0
bullmtl
bullmtl 9 months ago

I wonder if the electrode holder ought not travel as conventional tooling? Maybe control taper...

   0    0
bullmtl
bullmtl 9 months ago

Perhaps a slow linear motion device?

   0    0
bullmtl
bullmtl 9 months ago

Mimic the rifling button. Have barrel concentric with electrodes and one traveling at determined rate and helix... VF controlled lead screw.

   0    0
IvanTheTroll
IvanTheTroll 8 months ago

@bullmtl: What? There is no coolant flow,

   0    0
IvanTheTroll
IvanTheTroll 8 months ago

@bullmtl: No, SS has a higher valency than 40CR.

   0    0
IvanTheTroll
IvanTheTroll 8 months ago

@bullmtl: Control of depth of what?

   0    0
IvanTheTroll
IvanTheTroll 8 months ago

@bullmtl: This process is entirely static. There are no moving tools.

   0    0

Up next