Hello Chris, thank you for this great video of machining brass or bronze parts, this yellow color is magnificent, on the other hand for the small chips that fly everywhere on the machine it's misery to pick up, have a nice weekend.
In the past few months I've dealt with 10 bronze castings, some C86300 (Manganese) and some C95800 (nickel aluminum). Only one piece didn't have some degree of porosity and it was the smallest of the bunch. Remains to be seen what will happen with the rest. Hopefully they get UTed to check if they are any good before scrapping or welding them.
We ordered certified 3 each 2 3/4 dia 7075T7 10' long and all of them had the same issue. Truned out that the supplier order from a different mill than he usually did because he got it cheeper but sold it to us at the regular price. After that we used a different supplier.
Lol , the time it would take me to make the profile template to do that rad in a manual lathe , you already have the part finished in the cnc ! Nice one . 👍👍👍
Looks like some type of nickel aluminium bronze, maybe? Great video thanks for showing the program helps train the next generation of young lads and thanks for sharing 👍
Today the customer learns the definition of "garbage in, garbage out." To think they probably could have had that piece of material melted and re-cast for not a lot of money and had a flawless part, but nooooo...
I’ve had this in the past, but ours is a much smaller lathe usually used for higher batch work but the customer wanted a 20 off, 2 had issues with the castings after machining, then he thinks we have time to wait around a couple of days until he can get some more to us, expecting our machine to sit and wait and set back up again just for his job, how do you go about it? Do you ring the customer and say you’ll continue machining the material they provide and just charge them anyway? Or give them an option to stop the job until they provide adequate material but charge them for both the set up times for the faulty batch and the good batch?
If its customer provided in every time ive seen it we run what they brung,of course we let them know and make the decision but if they want to make us wait they will pay extra
@@BloopTube I know what you mean, but I just don’t know if being directly honest with the customer and letting them know as soon as it happens and letting them give the decision will help with further relations and potential more work in the future, difficult one I suppose
@@willyharris4199 Direct honesty has worked 100% of the time, if theres an issue with the material you document it and show them then let them make the call. that way no blame can be rested on you and yours. Building trust is absolutely key in this industry
What a bad casting! 🤦♂️ Casting brass or bronze is so easy, these metals almost flow by themselves. There is just a bit of borax needed for brass. How did they get such big pockets of air in??? 🤭🤷♂️ The only thing I had done differently doing it, at least for the finish cut, had been the use of some kind of liquid (alcohol, WD-40, anything). But this casting? No, no, no! 🤦♂️
Well Chris, I'm watching you run your lathe, while I run my lathe. Life is good.
We need to find a new hobby 😅
@@ChrisMaj Yeah, like that Kurtis guy from CEE Aussie who watches, after work... No, wait. : )
Shawn, get back to work and quit playing and watching videos! Lol!!😬
Hello Chris, thank you for this great video of machining brass or bronze parts, this yellow color is magnificent, on the other hand for the small chips that fly everywhere on the machine it's misery to pick up, have a nice weekend.
In the past few months I've dealt with 10 bronze castings, some C86300 (Manganese) and some C95800 (nickel aluminum). Only one piece didn't have some degree of porosity and it was the smallest of the bunch. Remains to be seen what will happen with the rest. Hopefully they get UTed to check if they are any good before scrapping or welding them.
Good quality bronze casting are hard to get.
We ordered certified 3 each 2 3/4 dia 7075T7 10' long and all of them had the same issue. Truned out that the supplier order from a different mill than he usually did because he got it cheeper but sold it to us at the regular price. After that we used a different supplier.
The stock must have come from that guy who could "Get it for less than that price!". You'll always get what you pay for.
Lol , the time it would take me to make the profile template to do that rad in a manual lathe , you already have the part finished in the cnc ! Nice one . 👍👍👍
Looks like some type of nickel aluminium bronze, maybe? Great video thanks for showing the program helps train the next generation of young lads and thanks for sharing 👍
The thing is, young lads don't want to go into that trade.
@@ChrisMajthere are a few of us!
It's always the customer supplied material
Nothing like working with customer supplied materials!
Almost as bad as repairing a customers repairs!
There's always that one customer who insists on using their own material.
In the entirety of watching this channel, I've never seen you drill with the tailstock lol.
I don't really do much drilling on my lathe. If it's just one piece, I'll go by hand if more, I'll use my toolpost attachment.
Nice results in spite of the substandard material.
Well done Chris.
Well, it looks like crap with all that porosity, but thanks 😅
Czyste złoto👍
Same dziury.
1:56 PROOF machinists can G-code faster with one index finger ☝then a teen can text with two thumbs!!👍👍
I don't know about that 😅
you should see me type probing cycles haha
Great video Chris, shame about the material. all the best Mark.
The customer has no one to blame, but themselves 😅
"Material provided by customer" That's usually not a good thing.
I agree
From this customer, it never fucken is.😅
Very good 👍👍
Would it be possible to gouge out the ugliness, and then braze (really brass weld) in some clean material, and re-turn?
The customer said he'll use it as is. Maybe next time he won't be that cheap.
Im sure this is a dumb question but could the hole and other defects be welded up and remachined? Have very little experience with brass
If the customer provides the material they provide payment for the job upfront.
I just work here, so I don't really know how they quote jobs.
Dear customer ! Can't be worrie about the big holes, you'll be take more grease between two parts.
No need for grease grooves 😅
Picked a pc out of the scrap bin and said this’ll do
Yeah, looks like it.
Today the customer learns the definition of "garbage in, garbage out." To think they probably could have had that piece of material melted and re-cast for not a lot of money and had a flawless part, but nooooo...
They wanted to go the easy route 😅
did you adjust run out with 4 jaw only or also utilize adjust tru feature of 3 jaw?
I only use my 4-jaw chuck
I’ve had this in the past, but ours is a much smaller lathe usually used for higher batch work but the customer wanted a 20 off, 2 had issues with the castings after machining, then he thinks we have time to wait around a couple of days until he can get some more to us, expecting our machine to sit and wait and set back up again just for his job, how do you go about it? Do you ring the customer and say you’ll continue machining the material they provide and just charge them anyway? Or give them an option to stop the job until they provide adequate material but charge them for both the set up times for the faulty batch and the good batch?
If its customer provided in every time ive seen it we run what they brung,of course we let them know and make the decision but if they want to make us wait they will pay extra
@@BloopTube I know what you mean, but I just don’t know if being directly honest with the customer and letting them know as soon as it happens and letting them give the decision will help with further relations and potential more work in the future, difficult one I suppose
@@willyharris4199 Direct honesty has worked 100% of the time, if theres an issue with the material you document it and show them then let them make the call. that way no blame can be rested on you and yours. Building trust is absolutely key in this industry
请问下你们这个铜 是铸造铝青铜吧？
No w rzeczy samej, troszku bucówka... : )
Brasil! 🇧🇷
Worlds slowest machinist
I think you hurt my feelings.
bad carsting .. gas or dirt
What a bad casting! 🤦♂️ Casting brass or bronze is so easy, these metals almost flow by themselves. There is just a bit of borax needed for brass. How did they get such big pockets of air in??? 🤭🤷♂️
The only thing I had done differently doing it, at least for the finish cut, had been the use of some kind of liquid (alcohol, WD-40, anything). But this casting? No, no, no! 🤦♂️
That's a sad modified casting 😢
Saving some money 😅