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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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I have a couple of hundred lbs of lead in sheet and block form that I
would like to turn into shot. I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Thanks in advance for any suggestions. Bill |
#2
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On Mar 7, 4:55*am, Bill Dobbins
wrote: I have a couple of hundred lbs of lead in sheet and block form that I would like to turn into shot. *I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. *I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Thanks in advance for any suggestions. Bill CAN be done, there have been several gadgets built commercially over the years to make shot. Pure lead will make poor shot, best thing to do, like the last time this came up, is to swap your pure lead scrap off to somebody with a whole bunch of lead wheel weights. Last show I saw pure lead at, several years back, it was going for around $1 for a small Lee-sized ingot. The muzzleloaders will thank you. Mixed lead alloys are pretty common, pure lead scrap is not. And it's all going to get tougher to find cheap. As far as the gadget, one I saw was nothing more than a chunk of angle iron, cut to a point and welded onto a thin rod that was welded to a heavy base. The pointy end angled down. To use, you put a bucket of water under the thing, park it above the bucket at a distance to be determined experimentally and heated with a healthy propane torch. Your lead alloy needs to be cast into thin-ish sticks first(more angle iron). These are applied to the hot angle iron, the melted lead runs down to the point and off into the bucket where the streams breaks up and forms small spheres(or not) while cooling fast. You then get the fun of drying the product, sieving it for size and running it over a jump gap to catch the out-of round stuff for another trip, a LOT of messing. Generally, arsenic was added to the commercial alloy to encourage spherical shot, you'll probably not be able to do that unless you've got a lot of once-used shot. This is why used shot is pretty useless for bullet casting, the arsenic content messes up mold fill-out. Not as bad as zinc contamination from the newer wheel weights, but bad enough. One small zinc stick-on will contaminate several hundred pounds of alloy to the point where it can't be used for bullets, sort your scrap carefully. There was a fancier sort that was electrically heated, had a pocket for the lead that had several interchangeable nozzles to sort of size the streams, worked exactly the same with the bucket of water. Cost a lot more and really didn't work much better than the angle iron. Haven't seen an ad for that for a decade or better. There was a review of these things done 15 years or more back, the guy ended up with some usable shot, but it took a lot of messing. Best to make the acquaintance of the local trap club, most will mine their fields periodically for the spent shot and sell it, either to members or to a scrap company for making more shot. Also saw an article about the same time about reusing fired shot, mixed small sizes patterned pretty well, good enough for trap practice. If it's buckshot you're after, you can get Lee gang molds for several sizes or adapt a split-shot sinker mold so that the balls aren't split. Stan |
#3
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![]() "Bill Dobbins" wrote in message ... I have a couple of hundred lbs of lead in sheet and block form that I would like to turn into shot. I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Thanks in advance for any suggestions. Bill In the good ole days shot towers were used, molten lead was poured from a calculated height and the shot was formed by the time it hit the water at the bottom of the tower. |
#4
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On Fri, 8 Mar 2013 12:02:02 +1000, "Why are people so cruel"
wrote: "Bill Dobbins" wrote in message ... I have a couple of hundred lbs of lead in sheet and block form that I would like to turn into shot. I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Thanks in advance for any suggestions. Bill In the good ole days shot towers were used, molten lead was poured from a calculated height and the shot was formed by the time it hit the water at the bottom of the tower. The shot was formed and hardened before it hit the water. The water was there mostly to keep the shot from pounding against itself and winding up misshapen. Also to cool it, of course, but not to solidify it. There was a shot tower in Mass., near the NH border, where one of my relatives used to work before WWII. I was a little kid when I saw it but it was a lot higher than 20 feet, or whatever was mentioned in this thread. It was a brick tower that looked like the industrial smokestacks in the old Mass. industrial areas. It wasn't run continuously. They only fired it up a couple of days each week. I also watched my grandfather make cut shot when I was a little kid. That's pretty foul stuff, but that's what a lot of people used when money was tight. It dates back to the early days of flintlock fowling pieces. -- Ed Huntress |
#5
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![]() "Ed Huntress" wrote in message ... On Fri, 8 Mar 2013 12:02:02 +1000, "Why are people so cruel" wrote: "Bill Dobbins" wrote in message ... I have a couple of hundred lbs of lead in sheet and block form that I would like to turn into shot. I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Thanks in advance for any suggestions. Bill In the good ole days shot towers were used, molten lead was poured from a calculated height and the shot was formed by the time it hit the water at the bottom of the tower. The shot was formed and hardened before it hit the water. The water was there mostly to keep the shot from pounding against itself and winding up misshapen. Also to cool it, of course, but not to solidify it. There was a shot tower in Mass., near the NH border, where one of my relatives used to work before WWII. I was a little kid when I saw it but it was a lot higher than 20 feet, or whatever was mentioned in this thread. It was a brick tower that looked like the industrial smokestacks in the old Mass. industrial areas. It wasn't run continuously. They only fired it up a couple of days each week. I also watched my grandfather make cut shot when I was a little kid. That's pretty foul stuff, but that's what a lot of people used when money was tight. It dates back to the early days of flintlock fowling pieces. -- Ed Huntress There is an old method to make glass ball lenses where you start with a thin glass fiber and melt the end briefly with a torch. The molten glass forms into a nearly perfect glass sphere suspended by the unmelted fiber. The balls is then easily broken off. In the old days they would make the fiber by softening a rod and drawing it out in the middle. The size of the ball depends on how much of the fiber was melted. In any case, I wonder if a similar technique would work for lead. Line up a row of snippets of fine lead wire and pass a torch across the row. Probably not a quick way to process hundreds of pounds, though. If you search Youtube for "lead shot machine" there are several there in action to get ideas from. One sprays water on the molten droplets in mid air so they harden before impacting the surface of the water where they otherwise might flatten. Only a short drop is needed. Another seems to use foamy water. Maybe the foam cools the drop before it impacts the surface, or it just reduces the impact at the water surface. |
#6
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On Fri, 8 Mar 2013 00:35:08 -0800, "anorton"
wrote: "Ed Huntress" wrote in message .. . On Fri, 8 Mar 2013 12:02:02 +1000, "Why are people so cruel" wrote: "Bill Dobbins" wrote in message ... I have a couple of hundred lbs of lead in sheet and block form that I would like to turn into shot. I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Thanks in advance for any suggestions. Bill In the good ole days shot towers were used, molten lead was poured from a calculated height and the shot was formed by the time it hit the water at the bottom of the tower. The shot was formed and hardened before it hit the water. The water was there mostly to keep the shot from pounding against itself and winding up misshapen. Also to cool it, of course, but not to solidify it. There was a shot tower in Mass., near the NH border, where one of my relatives used to work before WWII. I was a little kid when I saw it but it was a lot higher than 20 feet, or whatever was mentioned in this thread. It was a brick tower that looked like the industrial smokestacks in the old Mass. industrial areas. It wasn't run continuously. They only fired it up a couple of days each week. I also watched my grandfather make cut shot when I was a little kid. That's pretty foul stuff, but that's what a lot of people used when money was tight. It dates back to the early days of flintlock fowling pieces. -- Ed Huntress There is an old method to make glass ball lenses where you start with a thin glass fiber and melt the end briefly with a torch. The molten glass forms into a nearly perfect glass sphere suspended by the unmelted fiber. The balls is then easily broken off. In the old days they would make the fiber by softening a rod and drawing it out in the middle. The size of the ball depends on how much of the fiber was melted. I have done this. Or I tried. g It was for a high school science project, making a van Leeuwenhoek microscope. I actually got some pretty good ones. In any case, I wonder if a similar technique would work for lead. Line up a row of snippets of fine lead wire and pass a torch across the row. Probably not a quick way to process hundreds of pounds, though. Maybe. Somewhere around here I have some fine lead wire, used for making weighted trout-fishing nymphs and streamers. If I think of it, I'll give it a try sometime. If you search Youtube for "lead shot machine" there are several there in action to get ideas from. One sprays water on the molten droplets in mid air so they harden before impacting the surface of the water where they otherwise might flatten. Only a short drop is needed. Another seems to use foamy water. Maybe the foam cools the drop before it impacts the surface, or it just reduces the impact at the water surface. Interesting. I remember the bucket and screens they used in that shot tower in Mass. The screen was a plate with holes punched or drilled in it, that rested or was bolted to the bottom of a big steel bucket. -- Ed Huntress |
#7
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On Mar 8, 6:54*am, Ed Huntress wrote:
On Fri, 8 Mar 2013 00:35:08 -0800, "anorton" wrote: "Ed Huntress" wrote in message .. . On Fri, 8 Mar 2013 12:02:02 +1000, "Why are people so cruel" wrote: "Bill Dobbins" wrote in message ... I have a couple of hundred lbs of lead in sheet and block form that I would like to turn into shot. *I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. *I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Thanks in advance for any suggestions. Bill In the good ole days shot towers were used, molten lead was poured from a calculated height and the shot was formed by the time it hit the water at the bottom of the tower. The shot was formed and hardened before it hit the water. The water was there mostly to keep the shot from pounding against itself and winding up misshapen. Also to cool it, of course, but not to solidify it. There was a shot tower in Mass., near the NH border, where one of my relatives used to work before WWII. I was a little kid when I saw it but it was a lot higher than 20 feet, or whatever was mentioned in this thread. It was a brick tower that looked like the industrial smokestacks in the old Mass. industrial areas. It wasn't run continuously. They only fired it up a couple of days each week. I also watched my grandfather make cut shot when I was a little kid. That's pretty foul stuff, but that's what a lot of people used when money was tight. It dates back to the early days of flintlock fowling pieces. -- Ed Huntress There is an old method to make glass ball lenses where you start with a thin glass fiber and melt the end briefly with a torch. The molten glass forms into a nearly perfect glass sphere suspended by the unmelted fiber. The balls is then easily broken off. *In the old days they would make the fiber by softening a rod and drawing it out in the middle. The size of the ball depends on how much of the fiber was melted. I have done this. Or I tried. g It was for a high school science project, making a van Leeuwenhoek microscope. I actually got some pretty good ones. In any case, I wonder if a similar technique would work for lead. Line up a row of *snippets of fine lead wire and pass a torch across the row. Probably not a quick way to process hundreds of pounds, though. Maybe. Somewhere around here I have some fine lead wire, used for making weighted trout-fishing nymphs and streamers. If I think of it, I'll give it a try sometime. If you search Youtube for "lead shot machine" there are several there in action to get ideas from. One sprays water on the molten droplets in mid air so they harden before impacting the surface of *the water where they otherwise might flatten. Only a short drop is needed. * Another seems to use foamy water. Maybe the foam cools the drop before it impacts the surface, or it just reduces the impact at the water surface. Interesting. I remember the bucket and screens they used in that shot tower in Mass. The screen was a plate with holes punched or drilled in it, that rested or was bolted to the bottom of a big steel bucket. -- Ed Huntress- Hide quoted text - - Show quoted text - The short drop into a bucket of water in the method I describe assures that the lead is still molten when it hits, forms spheres from surface tension as it hardens. Shot towers were typically 100 feet or more, depending on the size of shot wanted. Bigger shot. more drop. Now, most of the big stuff is swaged from extruded wire using a nail-header type of machine and there's a centrifugal gadget for throwing smaller sizes. Of course, if you've got a spare elevator shaft in a tall building, you can play around with the original methods. Stan |
#8
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On 2013-03-07, Bill Dobbins wrote:
I have a couple of hundred lbs of lead in sheet and block form that I would like to turn into shot. I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Thanks in advance for any suggestions. Ever hear of a shot tower? The molten lead is poured into a container with a bunch of holes in the bottom. The lead pours out in a shower of small particles. They fall some distance (perhaps 20-40 feet -- I don't know for sure. In the fall -- they drop and assume a spherical shape. Then they fall into a pool of water at the bottom which cools them quickly and locks in the spherical shape. I'm not sure how consistent the size is, nor how close to round they are -- but it might be a cheap way to do this, if you have a high balcony to work from. Enjoy, DoN. -- Remove oil spill source from e-mail Email: | Voice (all times): (703) 938-4564 (too) near Washington D.C. | http://www.d-and-d.com/dnichols/DoN.html --- Black Holes are where God is dividing by zero --- |
#9
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On Fri, 08 Mar 2013 03:19:03 +0000, DoN. Nichols wrote:
On 2013-03-07, Bill Dobbins ... wrote: I have a couple of hundred lbs of lead in sheet and block form that I would like to turn into shot. I'm looking for either a cheap commercially available device that will do this or something easy I could make myself that can do it. I have come across a few commercial devices, but so far price is too prohibitive (I was hoping to find something in the $50-100 range). Ever hear of a shot tower? The molten lead is poured into a container with a bunch of holes in the bottom. The lead pours out in a shower of small particles. They fall some distance (perhaps 20-40 feet -- I don't know for sure. In the Sparks Shot Tower in South Philadelphia, the fall is (or was) around 140 feet. The following webpage includes detailed plans: http://www.workshopoftheworld.com/south_phila/sparks.html (click on pictures about 2/3 thru the page). Plans are dated 1880; tower was built in 1808. I went inside it once on a trip to Philly, but the stairs up were closed off. In the fall -- they drop and assume a spherical shape. Then they fall into a pool of water at the bottom which cools them quickly and locks in the spherical shape. I'm not sure how consistent the size is, nor how close to round they are -- but it might be a cheap way to do this, if you have a high balcony to work from. .... -- jiw |
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