Home |
Search |
Today's Posts |
|
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. |
Reply |
|
LinkBack | Thread Tools | Display Modes |
#1
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
A $2 item at a garage sale, looks to be in decent shape and little used.
http://www.kengrunke.frih.net/forumimages/gastorch.jpg But I've never used one of this before. The pump doesn't pump. (no compression) I don't have an oxy-acetylene rig, only a Prestolite acetylene bottle jeweler's torch plus a standard propane bottle torch. Will this heat a 3/4" steel shaft to red heat for bending, for example? Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. Thanks for any sensible comments. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#2
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
Ken Grunke wrote:
A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg But I've never used one of this before. The pump doesn't pump. (no compression) I don't have an oxy-acetylene rig, only a Prestolite acetylene bottle jeweler's torch plus a standard propane bottle torch. Will this heat a 3/4" steel shaft to red heat for bending, for example? Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. Thanks for any sensible comments. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- Safe enough, providing that it seals and does not weep liquid fuel. They are as safe as a camp stove or lantern, and work on similar principles. Lighting one is a bit unnerving at first, as the tray is supposed to be part filled with fuel, which is lit to preheat the generator (the coil inside the torch head). Once the generator is hot, cracking the valve should result in it getting hotter, as the flame gets going. Some guys use a propane torch to preheat the gen. Some use a mixture of gasoline and kerosene. Slightly less volatile and more heat, apparently. You should be able to do as you wish. Use a couple firebricks stacked up to make an "oven" for the bar if it does not heat enough from direct application of the torch. The pump is likely a leather washer type and should respond well to a little oil and a stretching towards a flatter shape. The other thing that can go wrong is the check valve going TU. Cheers Trevor Jones |
#3
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
On Fri, 20 Jul 2007 20:33:21 -0500, Ken Grunke
wrote: A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. I'm not familiar with this particular torch, but in general, gas refers to Coleman fuel / Naptha / white gas. You want something without additives to gunk up the nozzle. See if you can get the pump apart. Often they used a leather washer and if you just soak them in oil they'll work fine - at least that's what you do with old Coleman lanterns. People over at the Coleman lantern and pressure lamp / Petromax groups at Yahoo have overlapping experience with these and can give you more informed advice. After you pump it up, put a little soapy water around the connections to make sure you don't have any leaks or dunk it in a bucket and look for bubbles. I've lit and run one 35 or so years ago when I was young and fearless. The process was to pump up the tank, put some alcohol or gas in the well underneath the torch body and light it. Crack the valve when fuel in the well is getting low and just about to go out. Open the valve more once the small flame begins to burn more consistently. But go ask the guys over in the Yahoo groups who play with these things regularly. RWL |
#4
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
On Jul 20, 7:33 pm, Ken Grunke wrote:
A $2 item at a garage sale, looks to be in decent shape and little used.http://www.kengrunke.frih.net/forumimages/gastorch.jpg But I've never used one of this before. The pump doesn't pump. (no compression) I don't have an oxy-acetylene rig, only a Prestolite acetylene bottle jeweler's torch plus a standard propane bottle torch. Will this heat a 3/4" steel shaft to red heat for bending, for example? Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. Thanks for any sensible comments. In addition to the other comments, best operated outside. White gas will work, current unleaded should work, Coleman is safe to store and will work. The packing around the needle valve at the rear might need either repacking or tightening, you can check that once you get the pump operating again. Just put a little gas in it and pump it up with the needle valve shut, if you get a dribble out at the rear, the packing needs attention. Do this BEFORE lighting it off. If it leaks while running, you could get a good imitation of the Towering Inferno. Usually a wet rag will allow cranking the needle valve home to kill it but you have to get right on it and not panic. As to your heat requirements, I can't tell. A larger, similar burner will heat the bottom of a cast iron lead pot red hot in a matter of minutes. Haven't needed to use any petrol-burning stuff since I got the O/A rosebud. Chances are you're going to have a bunch of scale on your workpiece if you don't take precautions. Stan |
#5
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
GeoLane at PTD dot NET wrote in message ... On Fri, 20 Jul 2007 20:33:21 -0500, Ken Grunke wrote: A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. I'm not familiar with this particular torch, but in general, gas refers to Coleman fuel / Naptha / white gas. You want something without additives to gunk up the nozzle. See if you can get the pump apart. Often they used a leather washer and if you just soak them in oil they'll work fine - at least that's what you do with old Coleman lanterns. People over at the Coleman lantern and pressure lamp / Petromax groups at Yahoo have overlapping experience with these and can give you more informed advice. After you pump it up, put a little soapy water around the connections to make sure you don't have any leaks or dunk it in a bucket and look for bubbles. I've lit and run one 35 or so years ago when I was young and fearless. The process was to pump up the tank, put some alcohol or gas in the well underneath the torch body and light it. ^^^^^^^^^^^^^^^ The simple method I remember is to pump it up, as you say, and then open the valve while holding card or anything flat across the mouth of the burner. Liquid gas will come up against the card and run down into the well. When you think you have enough, close the valve and light the gas in the well. The first time you dop this, have a garden hose nearby, and it would be good to have another person with you as well. The worst thing you can do is have gasoline spray on your hands and clothing from a leak, and then catch fire. DO NOT loosen the filler cap while you're trying to light the torch. |
#6
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
On Fri, 20 Jul 2007 20:33:21 -0500, Ken Grunke
wrote: A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg Am I risking life and limb by thinking of using it? Like the other replies said, have a helper with some fire extinguishing gear handy the first time. Maybe wear welding leathers and gloves too. Gasoline isn't a toy. Dave |
#7
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
The first time you dop this, have a garden hose nearby, and it would be good to have another person with you as well. The worst thing you can do is have gasoline spray on your hands and clothing from a leak, and then catch fire. One of my first memories as a child was seeing this happen to my dad while he was using one of these gas blow torches to strip paint off the siding of our house. He jumped off the scafold and rolled on the ground to put the fire out. Years later, when he later told me what to do if my clothes caught fire, "stop, drop, and roll", I took him at his word having seen it demonstrated. Carl Boyd |
#8
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
On Fri, 20 Jul 2007 20:33:21 -0500, Ken Grunke wrote:
A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg ... Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. Thanks for all the helpful advice, I now feel better qualified to keep from blowing myself to smithereens. If that thing can heat up a 3/4" shaft for bending, then it will be worth a little trouble to get it fired up. Ken http://www.token.crwoodturner.com/ ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#9
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
On Sat, 21 Jul 2007 07:13:34 GMT, "Leo Lichtman"
wrote: GeoLane at PTD dot NET wrote in message .. . On Fri, 20 Jul 2007 20:33:21 -0500, Ken Grunke wrote: A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. I'm not familiar with this particular torch, but in general, gas refers to Coleman fuel / Naptha / white gas. You want something without additives to gunk up the nozzle. See if you can get the pump apart. Often they used a leather washer and if you just soak them in oil they'll work fine - at least that's what you do with old Coleman lanterns. People over at the Coleman lantern and pressure lamp / Petromax groups at Yahoo have overlapping experience with these and can give you more informed advice. After you pump it up, put a little soapy water around the connections to make sure you don't have any leaks or dunk it in a bucket and look for bubbles. I've lit and run one 35 or so years ago when I was young and fearless. The process was to pump up the tank, put some alcohol or gas in the well underneath the torch body and light it. ^^^^^^^^^^^^^^^ The simple method I remember is to pump it up, as you say, and then open the valve while holding card or anything flat across the mouth of the burner. Liquid gas will come up against the card and run down into the well. When you think you have enough, close the valve and light the gas in the well. First: I have never used one of these - by the time I needed something like this, propane torches on disposable bottles were available. Grandfather bought and used one, sometimes as a makeshift forge, some sixty years ago. The only way he ever filled the pre-heat pan was to cover the mouth of the burner with his bare hand then wipe his hand on his back pocket, wait for any gas left on his hand to evaporate, then with is other hand, light the pre-heat. I DO NOT recommend this procedure in any way. The first time you dop this, have a garden hose nearby, and it would be good to have another person with you as well. The worst thing you can do is have gasoline spray on your hands and clothing from a leak, and then catch fire. DO NOT loosen the filler cap while you're trying to light the torch. Gerry :-)} London, Canada |
#10
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
"Ken Grunke" wrote in message news A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg But I've never used one of this before. The pump doesn't pump. (no compression) I don't have an oxy-acetylene rig, only a Prestolite acetylene bottle jeweler's torch plus a standard propane bottle torch. Will this heat a 3/4" steel shaft to red heat for bending, for example? Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. Thanks for any sensible comments. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- I have been using my late fathers old (now) Lambert blow torch since about 1955. No problems, just maintain it, and keep it in good condition. After some practice, it's possible to do silver soldering on quite small objects, despite the size of the flame. I still use the old Lambert occasionaly, even though a propane turbo torch, and an oxy propane rig are on hand. Steve R. |
#11
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
Steve R. wrote:
"Ken Grunke" wrote in message news A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg But I've never used one of this before. The pump doesn't pump. (no compression) I don't have an oxy-acetylene rig, only a Prestolite acetylene bottle jeweler's torch plus a standard propane bottle torch. Will this heat a 3/4" steel shaft to red heat for bending, for example? Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. Thanks for any sensible comments. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- I have been using my late fathers old (now) Lambert blow torch since about 1955. No problems, just maintain it, and keep it in good condition. After some practice, it's possible to do silver soldering on quite small objects, despite the size of the flame. I still use the old Lambert occasionaly, even though a propane turbo torch, and an oxy propane rig are on hand. Steve R. Gas blow lamps as we call them here in the UK dont need a lot of pressure to get up and running, Kerosene ones do. these types of blow lamp were made to do primarily large soldering jobs. Such as sealing riveted brass or copper water tanks and brass to lead pipe work. Those lovely oval sweated pipejoints? If you want to heat up 3/4 in steel rod, there not the best tool. For heating steel to red hot youll need a minimum of propane and oxygen. Acetylene and oxygen is the fastest , and hottest. Despite the fact that acetylene hasa much lower calorific value than propane. Its to do with the flame rate. Propane is very slow. Acetylene is very fast, hopes this helps. |
#12
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
Ken, I am going to take a different tack than others here. I say shine it up, put it on a shelf in your shop and forget about it. Get a propane torch or some other modern gas torch to do your bending with. This thing can hurt you and why bother? LLB "Ken Grunke" wrote in message news A $2 item at a garage sale, looks to be in decent shape and little used. http://www.kengrunke.frih.net/forumimages/gastorch.jpg But I've never used one of this before. The pump doesn't pump. (no compression) I don't have an oxy-acetylene rig, only a Prestolite acetylene bottle jeweler's torch plus a standard propane bottle torch. Will this heat a 3/4" steel shaft to red heat for bending, for example? Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. Thanks for any sensible comments. ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#13
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
On Jul 20, 9:33 pm, Ken Grunke wrote:
A $2 item at a garage sale, looks to be in decent shape and little used.http://www.kengrunke.frih.net/forumimages/gastorch.jpg But I've never used one of this before. The pump doesn't pump. (no compression) I don't have an oxy-acetylene rig, only a Prestolite acetylene bottle jeweler's torch plus a standard propane bottle torch. Will this heat a 3/4" steel shaft to red heat for bending, for example? Am I risking life and limb by thinking of using it? Or is it a simple matter of getting new seals, and firing it up? Will it burn white gas? I have a gallon of that with nothing to use it in. Thanks for any sensible comments. I used to use one of these for melting small amounts of aluminum before I knew any better, gasoline torch aimed at the top and propane torch aimed at the bottom of an iron ladle containing aluminum bits. It put out a fair amount of heat, but seemed to have a tendency to clog easily. I would be cautious about using modern unleaded gas in one of them, since gasoline today contains a lot of additives that were not used back when these torches were designed. Coleman fuel would be a better choice, and also naphtha from a paint store will work, although it is somewhat more expensive. Mike |
#14
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
"KyMike" wrote in message oups.com... I used to use one of these for melting small amounts of aluminum before I knew any better, gasoline torch aimed at the top and propane torch aimed at the bottom of an iron ladle containing aluminum bits. It put out a fair amount of heat, but seemed to have a tendency to clog easily. I would be cautious about using modern unleaded gas in one of them, since gasoline today contains a lot of additives that were not used back when these torches were designed. Coleman fuel would be a better choice, and also naphtha from a paint store will work, although it is somewhat more expensive. I still have and still use one. About every two years, I make a new pump cup and needle valve gland. Other than that, it's dead reliable. Modern unleaded gas is just the ticket. Coleman fuel will work OK, too, but it's more expensive than automotive fuel. LLoyd |
#15
Posted to rec.crafts.metalworking
|
|||
|
|||
Gas blowtorch: safe, or not?
I still have and still use one. About every two years, I make a new pump cup and needle valve gland. Other than that, it's dead reliable. Modern unleaded gas is just the ticket. Coleman fuel will work OK, too, but it's more expensive than automotive fuel. LLoyd Humm, I still have mine too but the last time I used it was back before unleaded gas was generally available here, except at Amoco stations. I can't say for sure if modern gas would do any harm, but in this area they load it up with anti-pollution chemicals and it is not the same as the old fashioned fuel. I think the packing and leather cup on my torch may be due for replacement if I ever use it again. Nowdays I do my melting with a crucible furnace. Mike |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Forum | |||
Old Craftsman blowtorch | Metalworking | |||
Gas Blowtorch | UK diy | |||
Safe! | UK diy | |||
Where can I buy a blowtorch head that connects to a regular LP gas supply? i.e. not propane | UK diy |