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Lathe question from someone who has no clue...lol

kd4avp

Gold $$ Contributor
If a person wanted to purchase a lathe and learn the craft of doing your own barrel etc...what would you suggest?
I have a small amount of knowledge on using a lathe.
No intention of doing this as a business, just for my son and I.
He is into restorations and has need of lathe work from time to time.
I want to learn to do my own barrels.
Call it my upcoming retirement adventure into my 3rd or 4th childhood...least according my bride.
 
Think and learn as you go. I have made as many one off parts and dies as I have chambered barrels. A mill and a lathe will get a lot of work done with no wait time. Start with delrin and move up to aluminum. Both are relatively cheap to learn on and both machine pretty darn well.

I would never talk you out of a lathe or a mill. Its quite an entertainment package and keeps the mind working. Go for it!

Community college possibly or just find someone with some experience to get the basics. Be careful as machines that size are very unforgiving on body parts but otherwise play and go slow and learn.
 
We did our own path for me & interested family. Purchased a PM-1228VF-LB lathe & we made our outboard spiders, with inboard PM high speed D1-4 scroll 3 jaw chuck. Unfortunately only 120v/60Hz power available in our small 1/2 garage (mom owned the other 1/2 & unyielding ;-)). Performed several several barrel caliber chambers with excellent success. Just have to pay attention to details.
 
I mentored briefly with a smith when I started- one with decades of experience including making some parts for a major manufacturer- but I realized some months into it that this isn't "rocket science"...
Barrel and receiver work consists of simple/basic machining operations but they need to be done to exacting tolerances. YouTube videos (do a search, this has been discussed many times) and forums such as this where we're all willing to share/discuss/debate are invaluable.

If you can find machining classes, I'm sure it'll speed up the learning curve.
A manual mill is nice toy to have- and when you need it, you need it- but other than modifying certain parts, D&T on receivers, and other odds 'n ends they're not used for barrel work, it's all lathe.

What was most important to me, is that the results of your labor are immediately and precisely quantifiable.
Indicators, thread mikes, calipers, micrometers etc. don't lie- you either hit your numbers, or you didn't (and then there's the fun of starting over). In that regard, a barrel fitted by someone with 30 years doing it isn't necessarily better than one done by a yearling assuming all the tolerances have been met.

If buying used machines- and there are great deals to be had- best to have someone knowledgeable check it out with you if possible.

BE AWARE- the tooling investment will be significant. Not everything is needed at once- but you should expect to spend many thousands of $$ on what's needed. This is where a used machine in decent condition- can be a smoking deal when significant tooling comes with it.

You'll want at least 36" between centers if you might want to chamber between centers (used to do it that way), if you're only going to work through the headstock you can get by with less-make sure your spindle ID is at least 1-3/8" more is better- but it's still nice to have the bed length in case you want to do contouring or anything else requiring the barrel to be between centers.

Good luck.
 
If a person wanted to purchase a lathe and learn the craft of doing your own barrel etc...what would you suggest?
I have a small amount of knowledge on using a lathe.
No intention of doing this as a business, just for my son and I.
He is into restorations and has need of lathe work from time to time.
I want to learn to do my own barrels.
Call it my upcoming retirement adventure into my 3rd or 4th childhood...least according my bride.
I know many say they have done so with something like a 10x20, 10x24 lathe etc
In my personal opinion
I would not want to struggle, figure out how to make work anything smaller than a 12x36
When I first became a machinist many years ago and later went on to become head machinist of a small company of 120 employess
I had a 12x36 Jet and a Bridgeport Mill, among other various little cool machines. like an Orbital Welder
I learned on a Jet that had some play and some slop,, but a guy can get used to the slack and take up in the screws.
I still was able to hold .001" tol. because I got to know the lathe well
machining on it 40 hrs a day for years
I kept requesting a new lathe from Upper Mngt.
it never got approved because I kept holding the Engineers requested tolerances
on everything from SS to Teflon.
---
Now I use a 13x40
That to me is the perfect home hobbyist size lathe
BTW the bigger the lathe the larger the through hole on the Spindle - 1.5" min needed.
My Lathe uses beefier BXA size holders vs slightly smaller AXA size of a 12x36
I have used slightly larger lathes such as 16x42 lathe and can say the bigger the lathe
Does not hamper or hurt at ALL even though it may appear intimidating by looks
A larger lathe only serves to provide more rigidity in your work
----
What you want for gunsmith quality is
---
1) no wear or saddleback in the bed ways, flat all the way lengthwise
2) no play in the Headstock bearings
---If there is ANY play, it will show up in your work and in your finish
With my current 13x40 I can sneak up in .0001" increments with no deviation in the surface finish because the headstock bearings are that tight (no play)
Such as if you wish to re-profile your barrel, you want it done right the first time rather than having to touch up, sand, grind, smooth the finish to cover up shoddy work.
It depends on how intricate, and fine, and totes awesome bad ass you wanna be with your work
Turning and facing and crowning etc, well...
Lets just say, you CAN use a worn out lathe
But you WANT a lathe thats tight, straight, flat, etc
3) you want your tailstock to be able to get damn close to be in alignment of your headstock centerline
Like within .003" (Learn how to check this.)
You got a lot of learning ahead of you, but it aint rocket science its more math, trig, and geometry.
and whole buttload of common sense.
---
Other than that, you will get all sorts of other recommendations that may or may not mean much
Such as Gear head vs belt driven etc. (who cares)
---
I will also say, I like the D1-4 type attachent for the chuck vs a screw on chuck
I have another 12x36 that uses a screw on chuck
that if you operate in reverse (And you will)
the chuck sometimes can unscrew, (NOT FUN)
the camlock D1-4 (or D1-5 etc) I believe is a more solid lock up and CANNOT come loose
(If you tightened it down correctly)
---
One thing about having as much bedway length as possible is if you ever turn between centers
(And you will)
you WILL WANT and WILL USE - all that room
you may not need
but you will WANT - all that room
Theres nothing worse than you want a new 28 inch krieger but the its 6 months wait
but hey Brunos has a 34 inch in stock right now!!!!
But guess what? You cannot turn it because you settled for a 10x24
---
Be sure your lathe comes with a 4 jaw chuck, pay for a good one
dont even think about doing quality work with a 3 jaw
if a guy does not know how to use and setup in a 4 jaw, I would not pay him $100 to do anything
if you have to ask why? I'd suggest you instead get a book and do some homework
---
Make sure you get a Steady rest, (A follow rest is not the same and will collect dust)
---
Aloris(Dorian) vs China tool holders
there is a reason Aloris cost more
Aloris = no flex in the holder = the holders are so hard you cannot scratch them with a file
The china copies can easily be scratched with a file
Sometimes you want that extra rigidity, such as for boring, so get a few Aloris holders
for other operations the china/Ebay toolholders are fine, you will learn which is what and when
---
The tooling, indicators, mag base holders etc will cost you as much as the lathe,
so if you buy used, hopefully your lathe comes with
a Quickchange wedge type toolpost and some nice tool holders
---
learn how to set up your lathe on a solid foundation (Concrete) and level it in all 3 directions
learn how to make a test cut to ensure this
---
When you get more serious
(And you will)
You will wish you held out and spent more money on quality,
vs just getting a good deal for now
I once came across a 12x36 lathe on CL for $1000
I thought for $1k why not
the guy asked what I was gonna use the lathe for
I answered for working on my own guns
He upfront stated -"you would not want to use this lathe for guns, its pretty worn"
dont be in a hurry and settle for less just like getting married, it will bite you.
get what you really "NEED" to actually be happy with and be proud of your work
doing shoddy work, is nothing to brag about at the range
Soooo many people want to puff their chest out and be able to say
"I did it MYSELF!!"
Well, guess what, people are going to judge your work byy it's look and its finish
and if it doesnt look good, you will not want to say "I did it my SELF!!!" :)
---
Lastly, many lathes you cannot find parts for, be sure your lathe is complete, doesnt need any gears etc to work right
cuz some dude will sell you a POS for cheap that you think is a good deal that you can never use for anything just to get it out of his garage for scrap price and you did the hauling for him.
---
Lastly - you DO NOT NEED 3 Phase (220v single phase dryer outlet will do everything you need)
---
A newer less worn out Jet, is better than an old worn out Leblonde, lodge and shipley, Southbend etc.
If you find, and they are out there, a Hardinge 12x36 or bigger, GET IT
be sure it has a tailstock
I ran a couple Hardgine lathes and they are smoooooth and very well thought out lathes
---
I don't mean to sound shall I say "Elitist" but you want to give yourself room to grow
don't limit yourself or the operations you will want to be able to perform later
Listen to whatever
Jackie Schmidt, Butch Lambert, Dave Tooley offer to tell you. (theres a few others here too
but those 3 have tons of experience in this game.)
 
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One more thing I might add about ridigty and a tight machine
You will at some point if not from the start want to use Carbide
there are different types C2, C5, C6 etc being the main 3 used.
Regardless of that
a machine that vibrates or is compromised in the ridity of the setup etc
Will contribute to chipping your carbide tooling
Carbide being so much more brittle requires stable machining conditions
---
I dont know how many Tenon and muzzle threads I have cut on just 1 side of this cutter without having to rotate it.
But I tell you what, regardless of how expensive nice carbide tooling is, saving your tooling from breakage is not the issue...
The main point is :
---you do not want this chipping in the middle of single point threading a barrel.
(and not realize a microchip happened on just one side)
I use this type of tool so I can thread close to the shoulder of the Tenon
Pic 3 ; What a correct thread should look like through the Optical Comparator
Pic 4 ; what threads from some guys hand ground HSS tooling looks like or if your carbide chips
Pic 4 was done by a "Gunsmith" that a customer wanted me to copy from for a new barrel
I could not even gauge the thread, I could not tell if it was some weird 46 TPI???
or some metric thread (I had to research online what that make of firearm used for thread TPI, and there were 2 to choose from near that fine) it was ... (lets just say not worth my time)
In Pic 5 ; you cannot see the thread profile with your naked eye, but when you enlarge it to find out why someone wants you to thread it instead of the last guy because for some reason it wont screw all the way into his gun, it becomes apparent, it looks like he turned his TOOLPOST to 29 degrees
instead of his Compound, I can have compassion for guys learning and even making mistakes while learning
but
Ya don't wanna be ......."That Guy" right?
Understand we are all trying to help you prevent that :)
 

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Find a mentor, a kind person on another forum showed me his process and just as importantly why he chose it.
After you get an idea of the process and your needs the information on YT is better digested or rejected.
Then get some cheap barrels or dead barrels and go for it.
I had rudimentary at best machinist skills when I started doing my own barrels.



My first barrel was an expensive bartlein 338 barrel!
Lol!
It’s not difficult but it’s easy to mess up.

Don’t get too small of lathe, the lathe I use has a fairly small spindle bore and that brings its own challenges.

It’s really rewarding to smack a target at a mile or more with your own handy work.

C8844639-8162-425D-83EA-D7327829ECCA.jpeg15AAE5D6-C970-495F-91E2-3B971E0CE228.jpeg
 
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If possible, find a community college with a machinist course. You’ll get to learn on someone else’s equipment, and might very well have a great time doing it.
I did this at 46, and it was incredibly rewarding.
I totally agree Doug.
Did check with my local community college and all their classes are tied to an automotive program.
Will keep looking to see what may pop up.
We have another college in the next county that may have a program.
I do have contacts with a machine shop that does work for me at my job.
Trick is finding time to go there and if they are willing to let me watch and learn.
I do have an engineering background so dealing with measurements and tools is not a problem.
Just never had a tremendous exposure to actually running the lathe.
I learn so much better hands on.
 
I will add, there are no intentions of contouring a barrel. Only threads and chambering.
So maybe not need a lathe with long bed. Do have some space constraints plus definitely want a 220 volt machine. No sense in fighting with a machine lacking the power to turn the material properly.
 
You must be tired!:eek:;)
haha, i enjoyed every day of it
many repetetive jobs bore me, for some reason i was able to stand in front of a lathe for hours on end and not get bored,
didnt hve anyone looking over my shoulder, and they gave me all week to accomplish what needed to be done to meet produc schedule by friday.
i learned a lot of how to do things in an assemply line manufacturing type order from it.
---
Some guys will do things way out of order
like face one end of a part to square it up, then turn it around and face the other end square
then turn it back around and start machining
---
instead of just facing one end then turn it around and go to machining their part.
 
I totally agree Doug.
Did check with my local community college and all their classes are tied to an automotive program.
Will keep looking to see what may pop up.
We have another college in the next county that may have a program.
I do have contacts with a machine shop that does work for me at my job.
Trick is finding time to go there and if they are willing to let me watch and learn.
I do have an engineering background so dealing with measurements and tools is not a problem.
Just never had a tremendous exposure to actually running the lathe.
I learn so much better hands on.
The problem with many college courses today is they have gone the way of the machining industries.
Everything is CNC. They produce Machine Operators, not Machinist.

I have been a Machinist for 60+ years. Most know I own a very successful Machine Shop that specializes in Marine Work.
I have taught quite a few young men the trade. It is good if they start out with basic knowledge. However, a Shop like ours has specific ways we do things and job requirements that can go beyond simply making shavings.

The single best advice I can give anybody who wants to follow the trade or just do what the OP wishes, is no matter who is teaching you or what you are doing, gain a thorough knowledge as to WHY things are done a certain way.

That goes a long way in removing a lot of the mystery.
 
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Start watching youtube. There are some great manual machining channels out there. I've learned a ton from them. It's a whole different set of problem solving skills. Having 10 years of youtube university under my belt really made getting started easy.

You can always do an in person 1:1 with speedy or gordy
 
The problem with many college courses today is they have gone the way of the machining industries.
Everything is CNC. They produce Machine Operators, not Machinist.

I have been a Machinist for 60+ years. Most know I own a very successful Machine Shop that specializes in Marine Work.
I have taught quite a few young men the trade. It is good if they start out with basic knowledge. However, a Shop like ours has specific ways we do things and job requirements that can go beyond simply making shavings.

The single best advice I can give anybody who wants to follow the trade or just do what the OP wishes, is know matter who is teaching you or what you are doing, gain a thorough knowledge as to WHY things are done a certain way.

That goes a long way in removing a lot of the mystery.
The bit I highlighted in red from Jackies input applies to a lot of mechanical trades and one that applies to auto is "How"
You have to know "why" and "how" to do things so "you" can make the right choice when your mentor isn't present
 
Does not have to be a community college. Check any high school that has
a machine shop night course. You can also look up any machinists union
member to point you in a direction. Because our area was heavy industry to
tool and die, our schools always had openings. Sad to say most are going
away or already gone. CNC has since dominated everything.
 
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Haven't heard about a manual machining course in many years...
As said, it's all CNC nowadays.
Being a manual machine dinosaur, I gotta wonder whether this makes sense.
Doesn't it take longer to write the code for some one-off jobs than to chuck up some stock and do it manually? Or, is AI writing code now as I've read?
 
Haven't heard about a manual machining course in many years...
As said, it's all CNC nowadays.
Being a manual machine dinosaur, I gotta wonder whether this makes sense.
Doesn't it take longer to write the code for some one-off jobs than to chuck up some stock and do it manually? Or, is AI writing code now as I've read?

We don't fix things any longer. We throw them away and buy new. So there aren't many manual job needs out there. However... I bumped into a friend of a friend who runs a speed shop / mechanic and his eyes lit up when I said I can run a lathe/mill. Guys like him are desperate for job shop stuff.
 
Doesn't it take longer to write the code for some one-off jobs than to chuck up some stock and do it manually? Or, is AI writing code now as I've read?
Once you get good at it the conversational programming (no entering code, the machine generates it) can be really fast. The touch screens have made it even faster. But yeah for a part or two it's probably still faster in the manual machine.
 

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