I agree sleeving the bore will be your best option

@@sonicdrive The only downside i guess would be, that he may have to cut the rear of the chamber to insert it. I'm not a gunsmith, but I've seen sleeves done, always from the breech not the muzzle. Upside is that it will be much stronger than even a perfectly cast solid bore.

I think at the very least he should fill that hole with something... washing that crevas out like with an acid to get the surface clean then fill it with braze, weld or at the very worst maybe epoxy, maybe JB weld or even epoxy with shop glitter mixed in over the surface. I think filling it with something, anything even if you need to refill it every 20 fires of the cannon is better than leaving it without filling it.

@@sternstones4871: I sleeve rifle barrels from the bore end. Since you do not need to cut a chamber for a cartridge, and the weak point is forward of the main pressure zone It should work. Over bore it use a seamless steel sleeve, and Loctite black epoxy on the sleeve. Black powder does not burn it detonates. All the pressure is in the immediate area of the charge. Nitro powder burns peaking the pressure about 3-4 inches forward of the charge. This is the reason the old prohibition on shooting Damascus barrel shotguns is unfounded. I have been restoring black powder shotguns and shooting smokeless powder in them for over 50 yrs. I do make my loads very light on the chamber pressure. Reason: The whole gun is over 100 yrs old not just the barrel. I have never blown one up. I am not trying to convince anybody of anything. Just stating the facts. Everyone needs to follow their own opinions.

@@r.w.felton6020 black powder does not detonate. It burns like smokeless. It is less pressure dependant. The myth that it detonates started from the fact that its classed for transportation as an explosive where smokeless is classed as flammable solid. This is merely because it can self contain if something like 50 pounds of it is lit unconfined, where a big pile of smokeless will always burn slowly unconfined. When it burns it does not produce a detonation, that's something high explosives do.

I agree with @Jon_James. I was thinking a sleeve is your best bet mostly because of windage erosion past the defect. Boring it out without a sleeve is concerning for thin walls and possibly exposing other defects. Filling in the big defect seems like it will be either a strong point or weak point and doesn't address the smaller defects that will also erode over time. I am not a gunsmith. Most of my knowledge comes from studying naval artillery so I'm not really sure how downsizing will effect my own assumptions but with defects in a bronze cannon, I would estimate 50-100 rounds fired at the most before you notice severe drop in performance. Even that may be an overestimate. All that being said. Love the channel and I think it's great that you took on this project! I've learned some things.

Yes

Jon is correct. It will likely stand several firings. However, at some point it will likely fail at that point. If you have the ability (seems like you do) just sleve it.

scary how true this is.

Step zero: Remove any residual snakes.

@@Majilikin it's Alcohol tobacco and fireARMS. What this man has is artillery. A tad outside the preview of the ATF. Besides, he's got historical precedence on his side. John Adams upheld the right of merchant Marines to arm their ships with cannons, per their second amendment rights. Sure, more recent case may supercede that...or they'll make a new task force; ATF, Artillery, tobacco and firearms.....

I thought that only applied to rifled barrels.

The bore diameter rule doesn't apply to muzzle loaders because they aren't legally firearms on a federal level.

And a helluva lot of them died when test firing them ..

@@@cnoxey6898 LOL... 😁😁😁

@@cnoxey6898 no they did not in England they were proved at the proof houses and the failures never saw use.

@@brianthwaites2397 The ones that they caught at the proofing. Some faults occurred in the field. Cannons of that age, and even today have a life expectancy. Many have been used, even after their life expectancy had passed, resulting in fatal catastrophic failures.

uwe in Hamburg they had very accurate tools bud. They wouldn’t be able to do it without them. Same with any weapon fabrication since the year 800

I reckon the effect would be closer to a catapult.

Such risks occur occasionally for any machinist.

A new kind of knuckleduster. This specific type does the opposite of the original, and instantly turns your knuckles to dust.

@@martyjehovah you certainly are honoring your name with this. :)

not if it is a lead ball

@@brianthwaites2397 What Patrick is saying is that he should use lead to fill the defects in before then adding a harder material sleeve inside the lead. Also, assuming he's firing this as a reproduction cannon, he'd be using iron balls.

@@mythralt thats it a good idea lining the bore with lead and then sleeving and yeah i forgot that iron balls were used in the day but most were a tad larger than 1 inch bore, so lead balls seems easier if not historically accurate.

hm, a bit sparkly tho

Do you sprinkle the glitter on when you go to the Blue Oyster Bar?

Gibson Guitars used brass filings for The Les Paul Gold tops in the 50's. If the clear gets worn away they turn green.

no because the walls will be too thin at that point...

@@reinholdadam711 Thats why the steel sleeve.

@@vedigregorian4382 problem with that will be to balance the steel sleeve to the cast bronze. Because both are very different materials their point of plastic deformation ( a deformation with permanent indentation/change) the steel sleeve will widen under pressure so it will press against the bronze the bronze will permanently deform while the steel sleeve will shrink back therefor seperating the sleeve from the cannon. NOTE: this might not happen the first shot but it sure will

@@Caballawongla Yeah, though you could use a more brittle steel (or other metal). As long as the sleeve has a lower point of plastic deformation than the bronze it and can take the pressure itll be fine.

indeed that's the way it was done, vertically for fine tuning

Time to tip over a lathe!

It'd likely give you a good whack but unless your hand got trapped against the tool holder you'd just bounce off

you have to remember most of that was sped up footage

but the job was done and it didn't

When turning a part on a lathe, that very thing is often a problem. Something like those trunnions, or a lathe dog, etc., when a gloved hand, a ring or necklace, Your damn long hair, etc. gets caught in it, it'll rip your arm off, scalp you if your lucky, turn your face into so much mush if your not. keep your hair short enough to not get caught, remove any jewelry, wearing gloves is generally a bad idea because a glove will get caught up before your hand feels it, then your hand gets drug in with the glove like a chinese yoyo! lol Machinists have to deal with this daily. Even a keyway that runs off the end of a shaft can grab yer shit and pull you in! The solution is to never ever make a stupid mistake, EVER, or you are a dead duck!

@@oldnick4707 Spinning tools + gloves is bad news.

exactly my thoughts

That would be best

HAHA "an exact duplicate of this one" yes lol.

And use the glitter from the mini canon to make an even smaller one!

Dan, I like your miniature idea, make to fire .22 short rounds!

I would agree that sleeving the bore is the best option but still think it is unnecessary given the pressures likely to be encountered with a black powder load in a bronze barrel. However safety must be the paramount consideration so ... sleeving it is.

ball? Cascobel

Good argument for respecting the safety protocols around cannons. STAND BACK THIS CANNON GOT A DEFECT!!!!

Whoa!

The Tripple charge doesn't do much of pressure over the doubled one. You simply add the next squeezed grains/grams of powder which is still intact while the first charge is close to being at its highest point of giving out the pressure. This is due to the very tiny gradient of hand handled arms. Yet still works better with than without. That is not a problem as far as a musket barrel is very long. You will have a value from a bigger charge, not much tho. A better way to obtain more of the energy with your projectile is giving it a bigger cal. That's why a .58 and bigger muzzleloading rifles were quite common.

MrKansai1 teghe the triple charge isn’t about throwing your projectile farther. It’s to do it from behind a berm to see if the barrel survives it. If it does, you can be reasonably certain that it won’t be blowing up with normal loads when you have your face right next to it. And yes, double or triple charges to proof cannon barrels was very much a thing.

Thats a perfect analogy, there could be other voids

@@alexandramarberry1023 Shine it must Work it might

Takes forever to get the smell of Brasso off your hands...!

I can see now why people were making fun at me while i spent some time in Cambridge... I was always mentioning Bulgaria, sometimes twice in a sentence! Anyways, the dude has some nice skills, i agree! Поздрави братле, и аз заедно с един приятел правим експерименти с леене на бронз, ама нямаме инструменти, всичко правим с бормашина, шмиргел и ъглошлайф...

4 englishlies I made a similar canon in HS weld shop when we had a substitute teacher. Shot all kinds of objects across campus. The sub kept coming out of his asking what was going on..... when the regular teacher came back, my buddy and I got expelled for two weeks 😎

Better than Sweating metallicly.

I know exactly what you mean.

I still remember my first MRI. No such warning, the next three days, my arms, face and chest look as if I fell in a fire ant hill. Red bumps, white centers with black dots in the middle. In my late teens and early 20's I worked as a gun polisher in a refinishing shop. The black dots where steel bits embedded in my skin. Luckily I wore safety glasses. Though, one time that I didn't, I caught a steel splinter in my right eye. I got it out with a rare earth magnet.

I had one of my MRIs after a couple months of cutting and hanging cast iron on a big job. I didn't think anything about it. When that machine kicked on , I could feel every pulse of the machine . Bump bump bump , my body would get hotter and hotter and hotter. Then the machine would pause , and I'd cool down. Head to pelvis scanning of my back was a long process. Afterwards I got out and was directed down the hall to x-ray. Tech positioned me in front of machine and I got super nausiated. So I sat down . Finally started feeling better so we tried again. As he told me to hold real still, I tried to raise my hand. I'm in pure darkness , listening to some really great music. "Wake up." Nah man , this is great music . "Wake up!" . Come on this is great music I opened my eyes to a horde of nurses, doctors and anyone else they could squeeze in this x-ray room all standing over me frantic . I had blacked out and fell chin first into a chair. And apparently I had sprung a nice leak in my face hitting the chair. Good times .

@@texasdeeslinglead2401 The Techs & Nurses freak out when doing MRI's & CAT scans on me. I go into a meditative state, and a quarter way through the scans, they will stop and ask me repeatedly if I am alright. They cannot believe that a person can remain so perfectly still for so long and not be dead. Even had a tech doing a head scan on me, as part of a hearing test, asking me for more information on the practice of ZEN, after the test was completed. I've been a disciple of the art for over 40 years now.

What you said about guys in the U.S. is what we in the U.S. think about guys in Australia. It's like "You made that and you didn't even get put in prison or anything??" 🤣

nerdanderthal IDontLikeGooglePlus Take it over to Acorn to Arabella in Connecticut! ;P

@@skydronaut5359 I have this distinct image of Doug in an eyepatch, sailing down a river in Oklahoma, shooting this off the top of the pilot house at things on the bank....

That is not a shipboard cannon design - wrong type of carriage.

@@buggsy5 it has no carriage at this point, and there's no reason it couldn't be used for a swivel mount. It's to small for a carriage gun on a ship

@@skydronaut5359 That one is a Chinese Junk.

Ultrasonic testing (UT) would be much, much cheaper. And safer.

jockellis never priced it out but I did do radiography as a job for a few years. X-ray is definitely safe to do if but I don’t know the cost difference.

@@jmoss10403 I know next to nothing about X raying or Ultrasonic but is the X ray problem that to X ray through that thickness of bronze you need high intensity X rays, safe enough if you far enough away, but not standard intensity sounds expensive. As mentioned this is total guesswork on my part.

@@Cloudman572 doing the xray work himself is not really an option. His best bet would be to outsource the work to a local company. That would be the most cost effective way to do it because the ultrasound equipment isn't cheap and the knowledge of what your looking at when it comes to performing the ultrasound takes time to learn. X-ray is a good way to visually see any defects small or large in the part. The part thickness if a maximum of 2 inches is easy to xray and shooting a part like his would be really easy to do if you placed the source inside the bore.

@@jmoss10403 Ok, but who suggested he do the work himself, certainly not me.

@@TugIronChief Machinist here as well. I am welding a lot. Welds may look nice, but be absolute garbage inside.

Did they really make those cannons shine like that back in the day? Don't know....but the've must have bored them dead accurate.

…and it didn't disappoint! Man, those spinning murder pins in the middle of the barrel while on the lathe were _scary_ as hell!

Yep. A little intimidating!

@@darkxxhimxxlight I will certainly check them out!

@Kathleen Shaw wouldn't that crack the metal from the rapid cool/heat? Id only do one or the other just to be on the safe side.

@@TrevorMoore_ Cannon would have more thermal mass, and the sleeve is cold. The rate of heat transfer wouldn't likely be an issue for steel as long as it isn't cast or like 50 hrc

I was going to go with melt some brass and pour it in so it fills those holes, then re-machine. Same thing really

@@seanfernandez7759 melt glitter in place?

@@seanfernandez7759 " Same thing really" no its completely different story... tin have low melting temperature so you can easly melt it inside something made out of brass and have perfect melt with no deffects and not do any damage to your brass object...

@@Bialy_1 Once you have the brass melted and poured into the barrel it is the same thing. Granted you would also have to heat up the inside of the barrel help with the bonding. The challenge with using tin is that if you intend to fire the cannon, it is a place of weakness. But hey, each to their own right.

There's an accident waiting to happen. Sooner or later that patch will peel off like a scab on a healed wound. 1.) if its a live firing, it will jam up the cannon ball and the tube will blow. 2.) if blank firing, your blank now has a projectile. It will be like the Song of Hiawatha, who knows where it will land.

Love that you named him after the snake from Indiana Jones!

I'll be where I'm at!!! In my man/snake cave!!😆

The powder will break yhem apart before they leave the bore

@@knightworld3019 Oh, shame...

@@NUKE-W.E.F. ?

@@slendeer_games8731 sorry posted to wrong person

@@NUKE-W.E.F. Oh, ok!

Extort but they so cool