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Hi
I want to meet Mexican users of 7 x 12 mini-lathe.
I live in M¨¦xico City, however,I don't speak Spanish. ;)
First of all I need info where to go to get metal.
/johannes
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Even in American that can be hard to to find.
I would look at Amazon and Walmart.
Back in 1960's you could goto scrap yards but now machine shops buy 6" bar stock too.?
Dave?
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I'm in a very rural part of the US.? Not much in the way of scrap yards or metal purchases that aren't an hour+ drive.
I tend to scrounge from other sources.? For example, if you find an old rear end/differential, you can get some nice slices out of the axle tube and the axles, plus the flanges.? Some of the stuff is heat treated so that can be an issue machining.? If you don't mind medicore material, exercise weight plates can give some cast iron slugs.? Some items at places like Harbor Freight are cheap enough to be worth buying and then just using for metal sources.
Aluminum, at least for me, tends to be hard to find as it gets scrapped so readily and for that reason, brass and copper is really difficult to find.? Sometimes I just buy brass fittings that are close enough to machine down even though it's an expensive approach.? I've got a local hardware store that still has a lot of brass fittings.
On Tuesday, February 27th, 2024 at 11:04 AM, davesmith1800 <davesmith1@...> wrote:
Even in American that can be hard to to find.
I would look at Amazon and Walmart.
Back in 1960's you could goto scrap yards but now machine shops buy 6" bar stock too.?
Dave?
|
When you are in some town that has a machine shop, or two, or more, consider just going in and asking if they have some small scraps they might give you.? Or maybe even say you can pay.? (If paying, know what metal is nominally worth before you pay anything.)
You can say something like this, "I do small hobby machining projects at home and am looking for small scrap metal pieces."? If they are still listening, you can then say, "...like aluminum, brass, bronze, steel, round, hex, square shapes, anything."
If they so no, you haven't lost anything. If they say yes, there is a good chance you might get some for free.? It is possible they may want some payment.? And if they don't, you still might give them a few bucks "for your petty cash fund or Christmas party fund or something."
If they can't or won't help, you can ask if they know of anybody else around that might be able to help.? Always try and get leads.
Charles E. "Chuck" Kinzer
On Tuesday, February 27, 2024 at 08:04:34 AM PST, davesmith1800 <davesmith1@...> wrote:
Even in American that can be hard to to find.
I would look at Amazon and Walmart.
Back in 1960's you could goto scrap yards but now machine shops buy 6" bar stock too.?
Dave?
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Doesn't hurt to bring donuts or lunch or something along with the ask.
On Tuesday, February 27th, 2024 at 11:31 AM, Charles Kinzer <ckinzer@...> wrote:
When you are in some town that has a machine shop, or two, or more, consider just going in and asking if they have some small scraps they might give you.? Or maybe even say you can pay.? (If paying, know what metal is nominally worth before you pay anything.)
You can say something like this, "I do small hobby machining projects at home and am looking for small scrap metal pieces."? If they are still listening, you can then say, "...like aluminum, brass, bronze, steel, round, hex, square shapes, anything."
If they so no, you haven't lost anything. If they say yes, there is a good chance you might get some for free.? It is possible they may want some payment.? And if they don't, you still might give them a few bucks "for your petty cash fund or Christmas party fund or something."
If they can't or won't help, you can ask if they know of anybody else around that might be able to help.? Always try and get leads.
Charles E. "Chuck" Kinzer
On Tuesday, February 27, 2024 at 08:04:34 AM PST, davesmith1800 <davesmith1@...> wrote:
Even in American that can be hard to to find.
I would look at Amazon and Walmart.
Back in 1960's you could goto scrap yards but now machine shops buy 6" bar stock too.?
Dave?
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Back 1960's there a magazine where guy made his own bar stock for plumbing parts
It was a basic mold out of earth about 8" long I think.?
He had good brass bar stock to use.
Dave?
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Mexico, San Miguel de Allende, so nowhere close.
Look for "Metales la Paloma" for alum & brass. They do have minimums but not outrageous.
On Tue, Feb 27, 2024 at 9:19?AM Johannes < johannes@...> wrote: Hi
I want to meet Mexican users of 7 x 12 mini-lathe.
I live in M¨¦xico City, however,I don't speak Spanish. ;)
First of all I need info where to go to get metal.
/johannes
|
"If you don't mind mediocre material, exercise weight plates can give some cast iron slugs."??
You can get a lot of good metal from people throwing out barbell equipment (usually after the person in the family who bought it has moved out, given up bodybuilding, died, or whatever). So look around on garbage-collecting days. The bar itself is usually a five foot length of 1" 1018 mild steel or similar, and it's perfectly usable.
The plates are normally cast iron (but cheap ones are plastic-coated concrete. Leave those for the trash). There's a thick skin you have to get through when turning barbell plates, but after that the metal isn¡¯t so bad, in my opinion. I've? found you can get through much of the skin by sawing the outside off with a hacksaw or filing with a file that you don't much care about (because it's very abrasive).
I've made backplates for chucks out of barbell plates. You drill and tap the plate in areas that will be unused or cut off and bolt it to the lathe faceplate. Then you machine the center to fit the lathe spindle. You then attach the plate to the spindle by the center section you made and cut off the waste. Finally, you machine the other side to fit the back of the chuck.??
This is a good beginner's project in my opinion. If you screw it up cosmetically, no one's ever going to see it but you. And if you totally trash it, you've only ruined a barbell plate you found in the garage.
But beware: the standard minilathe motor doesn't have nearly enough power to turn a cast iron disk, because you have to turn it SLOWLY. So make a spindle crank or beef up the motor first.??
Mike Taglieri?
I'm in a very rural part of the US.? Not much in the way of scrap yards or metal purchases that aren't an hour+ drive.
I tend to scrounge from other sources.? For example, if you find an old rear end/differential, you can get some nice slices out of the axle tube and the axles, plus the flanges.? Some of the stuff is heat treated so that can be an issue machining.? If you don't mind medicore material, exercise weight plates can give some cast iron slugs.? Some items at places like Harbor Freight are cheap enough to be worth buying and then just using for metal sources.
Aluminum, at least for me, tends to be hard to find as it gets scrapped so readily and for that reason, brass and copper is really difficult to find.? Sometimes I just buy brass fittings that are close enough to machine down even though it's an expensive approach.? I've got a local hardware store that still has a lot of brass fittings.
On Tuesday, February 27th, 2024 at 11:04 AM, davesmith1800 < davesmith1@...> wrote:
Even in American that can be hard to to find.
I would look at Amazon and Walmart.
Back in 1960's you could goto scrap yards but now machine shops buy 6" bar stock too.?
Dave?
|
When I use barbell weights, I clamp one to a sawhorse (outside) & use an angle grinder to remove the skin before putting it on the lathe.
Roy
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Thanks Mario and the rest of your boys. I found in map this Lapaloma Metal not so far away from me. Let see they sell seizes shorter than 3 meters. Brass and aluminum is for the moment most interested. ? And my second question: Somebody knows I can find in Mexico a similar ¡°Little machine shop ?5100¡± lathe? ? /Johannes ? ? ? ?
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From: mario mohlSent: tysdag 27. februar 2024 11:44 To: [email protected]Subject: Re: [7x12MiniLathe] Mexican users of 7x12 lathe ? Mexico, San Miguel de Allende, so nowhere close. Look for "Metales la Paloma" for alum & brass. They do have minimums but not outrageous. ? On Tue, Feb 27, 2024 at 9:19?AM Johannes <johannes@...> wrote: Hi
I want to meet Mexican users of 7 x 12 mini-lathe.
I live in M¨¦xico City, however,I don't speak Spanish. ;)
First of all I need info where to go to get metal.
/johannes
|
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Show quoted text
On Tue, Feb 27, 2024 at 10:06?PM Johannes < johannes@...> wrote: Thanks Mario and the rest of your boys. I found in map this Lapaloma Metal not so far away from me. Let see they sell seizes shorter than 3 meters. Brass and aluminum is for the moment most interested. ? And my second question: Somebody knows I can find in Mexico a similar ¡°Little machine shop ?5100¡± lathe? ? /Johannes ? ? ? ? ? Mexico, San Miguel de Allende, so nowhere close. Look for "Metales la Paloma" for alum & brass. They do have minimums but not outrageous. ? On Tue, Feb 27, 2024 at 9:19?AM Johannes <johannes@...> wrote: Hi
I want to meet Mexican users of 7 x 12 mini-lathe.
I live in M¨¦xico City, however,I don't speak Spanish. ;)
First of all I need info where to go to get metal.
/johannes
|
Yes, an angle grinder is a great idea. (I think I've actually done it that way before, but I forgot to mention it!)
There are two real problems with using barbell plates. The skin is the worst one. The second problem is a barbell plate always has a hole?in the middle, obviously. That's fine for making chuck backplates and similar round, hollow things, but it's a drawback for many other projects.
Mike Taglieri?
When I use barbell weights, I clamp one to a sawhorse (outside) & use an angle grinder to remove the skin before putting it on the lathe.
Roy
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When I cutting cast iron I use lathe and cut outside.? The photo is casting in class 45? cast iron. It is a harder cast iron than most.? FYI? The first photo is finished part. The second photo same wheel be machined. I took the photo not in the photo.  
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Johannes
davesmith1800
chrisser
