Is your boring rod getting smaller? If you have signs that cutting is taking place, but the tube diameter is not changing, you possibly have the wires reversed. In that case, you are using the tube to cut the rod.

@@lordkyleofearth the positive pole goes at the end and the negative pole at the barrel, is that correct?

Negative goes to the cutting tool and positive goes to the work piece (whatever you are trying to cut).

Thanks a Lot man,

5a is probably fine. You only need the 3a for adequate flow. At 5a, some pump models can make enough pressure to pop hoses free. If that happens, you'll just need better clamps.

@@lordkyleofearth Thank you! I've bought the metal hose clamps so fingers crossed that's enough

As long as you have electrolyte flow, you should be good. Lower volumes mean less sludge removal, at some point, but I'm not sure where that line is at-you'll probably have to find it experimentally. FWIW, I cut my early barrels with an aquarium pump that was fairly low flow and built essentially zero pressure. From that, you're likely fine with that 4L pump.

It's just a 12v RV water pump. I'm not sure if it'd need your needs or not, but there are a bunch out there to choose from.

You are correct. Ivan's ECM guide has the timing intervals (assuming 8.5a is used on a 4" barrel). If you overshoot your targets, you'll likely ruin the barrel.

Anything that can push 10 or more amps and, preferably, that offers a constant current function. An ATX power supply and buck converter works fine.

I think the Longwei one that doesn't have the course and fine adjustments on it, 10 amps. They're like $80.

Odysee is the current host for related files, but you can also just search for "home ECM" and it should get you where you need to be.

The more amps you can push, the better. 5a will work, but it'll be about half as fast and you'll have reduced surface quality. If you can get the 10a version, it's worth the extra money.

You'd get eccentric boring, which would make for a pretty much garbage barrel (also, possibly an unsafe one, depending on how eccentric).

Salt water

I am unclear on whether or not it's permitted under the current TOS for KZfaq. Once I've done some more research I'll hopefully be confident enough to post a process video.

@@lordkyleofearth awesome, I'll be sure to check it out

An RV water pump is totally adequate.

You can let the water settle and transfer it to a different vessel for the next job. Although, an even better strategy would be to add 50g (or so) of citric acid to the mixture. This will allow the sludge to stay in solution better and reduce the formation of extremely toxic hexavalent chromium.

ECM will cut pretty much any conductive metal.

The most recent ECM guide is, I believe, the 3.5 guide on Odysee. For this work here, I'm using files that I made myself, based on the original easy impact published by Ivan the troll.

The Deterrence Dispensed ECM guide has all the files (which have been updated) instructions on how to use them.

@@lordkyleofearth alright thanks

@@lordkyleofearth where can i get the files?

22 centrefire would be possible, you'd just need to buy the appropriate pipe to begin with. Rimfire would require huge adaptation and changes to the gun internals so I doubt it'd work

No. Polymer is not appropriate for barrels.

@@lordkyleofearth meant to say polygonal not polymer LOOLLL i know polymer isnt for barrels

@@fluffypinkpandas You can make all sorts of calibers. Just don't exceed the pressure rating of the base tube.

@@lordkyleofearth aight.

Hydraulic pipe is rated for the pressures of a firearm barrel.

Thanks. Automotive? Where can I get those? Thanks.

@@marlondeanbellot.7945 Ebay and Aliexpress.

Yes, I had them laying around from another project. You can use anything to support the work.

@@lordkyleofearth i mean the tubes for the water? i have a similar setup, but i don't like the smell of the pvc tubes which were recommended what else can i use?

I just used vinyl tubing from the hardware store. It's cheap and non-reactive with the solution.

If you don't shop around, probably between $120-150 US.

@@lordkyleofearthcan I get a list of what to look for? Every time I search ECM machine up I get something that cost 3k-9,000$ P.S (If you can’t tell me that’s cool idk if it’s against the rules to post a list of things to get.)

@@sirgilbertcartieriii6243 IvanTheTroll has a very comprehensive guide for equipment and processes. Look on Odysee or Lbry for his ECM barrel guide.

@@lordkyleofearth thank you! Didn’t actually think you would reply that fast lol!

KZfaq is not a supportive platform for content. I'm still active, just not here 😉