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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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#41
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The best invention ever.....
On Fri, 03 Dec 2010 22:09:27 -0600, Don Foreman
wrote: On Fri, 03 Dec 2010 14:50:55 -0800, Larry Jaques wrote: On Fri, 03 Dec 2010 12:55:49 -0600, Don Foreman wrote: On Fri, 03 Dec 2010 07:27:37 -0800, Larry Jaques wrote: I'll betcha a dollar to a doughnut that you didn't warm the silly stuff first. I'd like a chocolate eclair, please. Shop is always around 68 deg F. Aha! Confirmation that he didn't warm it first! 68 is warm in MN. Propane has plenty of vapor pressure at 68F. I was thinking goo-melting, not vapor pressure. Warmer rattle contents are much easier to spray than unmixed solids in the bottom. Viscosity matters in mixing, ah reckon. -- "Human nature itself is evermore an advocate for liberty. There is also in human nature a resentment of injury, and indignation against wrong. A love of truth and a veneration of virtue. These amiable passions, are the latent spark. If the people are capable of understanding, seeing and feeling the differences between true and false, right and wrong, virtue and vice, to what better principle can the friends of mankind apply than to the sense of this difference?" --John Adams |
#42
Posted to rec.crafts.metalworking
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The best invention ever.....
Larry Jaques wrote:
On Fri, 03 Dec 2010 22:09:27 -0600, Don Foreman wrote: On Fri, 03 Dec 2010 14:50:55 -0800, Larry Jaques wrote: On Fri, 03 Dec 2010 12:55:49 -0600, Don Foreman wrote: On Fri, 03 Dec 2010 07:27:37 -0800, Larry Jaques wrote: I'll betcha a dollar to a doughnut that you didn't warm the silly stuff first. I'd like a chocolate eclair, please. Shop is always around 68 deg F. Aha! Confirmation that he didn't warm it first! 68 is warm in MN. Propane has plenty of vapor pressure at 68F. I was thinking goo-melting, not vapor pressure. Warmer rattle contents are much easier to spray than unmixed solids in the bottom. Viscosity matters in mixing, ah reckon. My new experiment is to store the aerosol cans upside down. I figure the unmixed solids will crowd to the top of the can and any valve leakage will expel replaceable gas and not cloggy paint. Haven't lost a can yet. So far, so good. --Winston |
#43
Posted to rec.crafts.metalworking
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The best invention ever.....
On Thu, 02 Dec 2010 23:24:49 -0800, Winston
wrote: Gerald Miller wrote: (...) I never throw away a spray nozzle, I toss it in a jar of brake fluid and every so often I fish them out and blow them clean then store them in a plastic bottle till I need to spray something. Me too! That's saved my bacon on many occasions. I won't buy spray paint if it has an irreplaceable nozzle. Do you save the little red straws from lubricant cans as well? --Winston I have an unlimited collection of those, I just haven't been able to find them for years - they gotta be around somewhere! Seriously, whenever I get a can with one, I fold a soda straw in half and tape it to the can as a storage place. Gerry :-)} London, Canada |
#44
Posted to rec.crafts.metalworking
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The best invention ever.....
Winston wrote:
My new experiment is to store the aerosol cans upside down. I figure the unmixed solids will crowd to the top of the can and any valve leakage will expel replaceable gas and not cloggy paint. Haven't lost a can yet. So far, so good. I was going to do that, but I use so little rattle-can paint and don't really lose many cans, coupled with the uncertainty of how well the solids would re-mix in the top dome .... Bob |
#45
Posted to rec.crafts.metalworking
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The best invention ever.....
On 12/3/2010 00:18, Don Foreman wrote:
On Thu, 02 Dec 2010 15:09:27 -0800, Jim wrote: On Thu, 02 Dec 2010 15:21:04 -0500, wrote: I have got to get me one of these. Watch the video, the guy has a good sense of humor too. Ebay item 310206425972 or www.mixkwik.com I'm tired of cans that clog up and stop spraying. Think this will fix them. Just wish I thought of it. Thank You, Randy Remove 333 from email address to reply. I was a judge at this years "National Hardware Show" in Las Vegas and judged this tool. None of the judges, including me, thought much of it. By the time you get the thing out and attach it to your recip saw, unless you have one to dedicate to this job, then attach the can to the tool, you could have just shaken the thing up yourself. I'm gonna make one for myself. Your time budget is incomplete. It works more like this: Grab old rattlecan, shake like hell for a minute and a half. Start spraying. It sprays great for 2 seconds and clogs. Pull nozzle, soak in lacquer thinner, blow out with compressed air, remount. Shake can another minute and a half. Commence spraying. It sprays for two seconds and clogs. Neighbor's sweet little boy of 3 years asks mommy, "what does 'rat****er*******sonofabitchstink****scurveyworthl esspieceof****' mean, mommy?" Mommy says, "Don sometimes talks in a foreign language we don't speak, dear. Eat your peas." Damn. I laughed my ass off. Soak nozzle in lacquer thinner, blow out with compressed air. Attach the shop-made "recharger nozzle" to a propane bottle, shoot some liquid propane into the can to raise the pressure and blow the gorp out of the tube inside. This I'd like to know how to make. -- Steve Walker (remove wallet to reply) |
#46
Posted to rec.crafts.metalworking
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The best invention ever.....
On Fri, 03 Dec 2010 21:36:01 -0800, Winston
wrote: Larry Jaques wrote: On Fri, 03 Dec 2010 22:09:27 -0600, Don Foreman wrote: On Fri, 03 Dec 2010 14:50:55 -0800, Larry Jaques wrote: On Fri, 03 Dec 2010 12:55:49 -0600, Don Foreman wrote: On Fri, 03 Dec 2010 07:27:37 -0800, Larry Jaques wrote: I'll betcha a dollar to a doughnut that you didn't warm the silly stuff first. I'd like a chocolate eclair, please. Shop is always around 68 deg F. Aha! Confirmation that he didn't warm it first! 68 is warm in MN. Propane has plenty of vapor pressure at 68F. I was thinking goo-melting, not vapor pressure. Warmer rattle contents are much easier to spray than unmixed solids in the bottom. Viscosity matters in mixing, ah reckon. My new experiment is to store the aerosol cans upside down. I figure the unmixed solids will crowd to the top of the can and any valve leakage will expel replaceable gas and not cloggy paint. Haven't lost a can yet. So far, so good. Excellent idear, Winsome. -- "Human nature itself is evermore an advocate for liberty. There is also in human nature a resentment of injury, and indignation against wrong. A love of truth and a veneration of virtue. These amiable passions, are the latent spark. If the people are capable of understanding, seeing and feeling the differences between true and false, right and wrong, virtue and vice, to what better principle can the friends of mankind apply than to the sense of this difference?" --John Adams |
#47
Posted to rec.crafts.metalworking
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The best invention ever.....
On Sat, 04 Dec 2010 09:01:24 -0500, Steve Walker
wrote: Soak nozzle in lacquer thinner, blow out with compressed air. Attach the shop-made "recharger nozzle" to a propane bottle, shoot some liquid propane into the can to raise the pressure and blow the gorp out of the tube inside. This I'd like to know how to make. It's a piece of brass turned to resemble a nozzle stem on one end (drilled thru, of course) and threaded on the other end to screw into an old Bernz-O-Matic torch body. |
#48
Posted to rec.crafts.metalworking
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The best invention ever.....
Don Foreman wrote:
On Sat, 04 Dec 2010 09:01:24 -0500, Steve Walker wrote: Soak nozzle in lacquer thinner, blow out with compressed air. Attach the shop-made "recharger nozzle" to a propane bottle, shoot some liquid propane into the can to raise the pressure and blow the gorp out of the tube inside. This I'd like to know how to make. It's a piece of brass turned to resemble a nozzle stem on one end (drilled thru, of course) and threaded on the other end to screw into an old Bernz-O-Matic torch body. My version: http://home.comcast.net/~bobengelhar...anAdapter2.jpg Bob |
#50
Posted to rec.crafts.metalworking
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The best invention ever.....
Bob Engelhardt wrote:
Winston wrote: (...) Haven't lost a can yet. So far, so good. I was going to do that, but I use so little rattle-can paint and don't really lose many cans, coupled with the uncertainty of how well the solids would re-mix in the top dome .... After a couple years of storing used aerosol paint cans upside down, none of them have clogged. When I need a can, I just shake it for the requisite minute after the ball starts rattling and use per instructions. The paint appears to perform as well as it did when the can was new. Now I actually *empty* my paint cans onto projects rather than throw them away, half full. I fully expect to see a "miracle antigravity paint saver base" in next year's Brook$tone catalog that is nothing more than a family of weighted replacement caps! --Winston |
#51
Posted to rec.crafts.metalworking
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The best invention ever.....
Larry Jaques wrote:
On Fri, 03 Dec 2010 21:36:01 -0800, wrote: (...) My new experiment is to store the aerosol cans upside down. I figure the unmixed solids will crowd to the top of the can and any valve leakage will expel replaceable gas and not cloggy paint. Haven't lost a can yet. So far, so good. Excellent idear, Winsome. Thank you sir. --Winston |
#52
Posted to rec.crafts.metalworking
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The best invention ever.....
On Sat, 04 Dec 2010 11:40:21 -0500, Bob Engelhardt
wrote: Don Foreman wrote: On Sat, 04 Dec 2010 09:01:24 -0500, Steve Walker wrote: Soak nozzle in lacquer thinner, blow out with compressed air. Attach the shop-made "recharger nozzle" to a propane bottle, shoot some liquid propane into the can to raise the pressure and blow the gorp out of the tube inside. This I'd like to know how to make. It's a piece of brass turned to resemble a nozzle stem on one end (drilled thru, of course) and threaded on the other end to screw into an old Bernz-O-Matic torch body. My version: http://home.comcast.net/~bobengelhar...anAdapter2.jpg Bob Yay Bob! I knew someone here had posted a photo in the past. I thought it might have been Richard Kinch but I didn't find anything like this on his truetex website. Steve, that little slit on the end is necessary. It needn't be more than maybe .030 or so long, but it has to be there. I made mine with an .030" slitting saw in the mill. It could also be done with a jeweller's saw or a Dremel. Pull spray nozzle out of spray can, set can on firm bench on newspaper or other surface where paint spillage wouldn't matter. Put on safety glasses, full face shield if you might have a marketing meeting on Monday. I don't wear a tuxedo when doing this operation, nor do it in milady's parlor. I've also never lost more than a few drops of paint, but the potential definitely exists. Invert propane cylinder. Jam the nozzle into the rattlecan smartly. If you wimp out here, there is gonna be a mess. Probably won't hit the ceiling, though. Once jammed in, maintain downward pressure and open the propane valve. Liquid propane will flow into your rattlecan until pressures equalize. This could take a few seconds. Close valve, pull nozzle out of rattlecan briskly. If you do it right you'll just get a little "ffft" of propane and not lose a drop of paint. The can won't explode, or at least I've never had one explode and I've been doing this for two decades. They're made to safely withstand the vapor pressure of propane even at fairly high temps, and propane is, in fact, a fairly commonly-used propellant. |
#53
Posted to rec.crafts.metalworking
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The best invention ever.....
What about using butane fuel in the
convenient can? Propane is much less expensive? http://www.alliedelec.com/search/productdetail.aspx?SKU=8615277 http://en.wikipedia.org/wiki/Aerosol_spray#Propellant --Winston |
#54
Posted to rec.crafts.metalworking
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The best invention ever.....
Don Foreman wrote:
[how to recharge rattle can from propane torch cylinder] Listen to what he said about avoiding a mess. That happens really easily. I'd like to add that the propane won't transfer unless the pressure in the cylinder is greater than that in the rattle can (gravity won't do it). That means a difference of temperature - the cylinder has to be warmer than the rattle can. Warming the cylinder is easiest, but if that makes you nervous, you can chill the rattle can. Bob |
#55
Posted to rec.crafts.metalworking
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The best invention ever.....
On Sat, 04 Dec 2010 23:02:52 -0800, Winston
wrote: What about using butane fuel in the convenient can? Propane is much less expensive? http://www.alliedelec.com/search/productdetail.aspx?SKU=8615277 http://en.wikipedia.org/wiki/Aerosol_spray#Propellant --Winston Propane is cheaper, and it has higher vapor pressure. |
#56
Posted to rec.crafts.metalworking
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The best invention ever.....
Don Foreman wrote:
On Sat, 04 Dec 2010 23:02:52 -0800, wrote: What about using butane fuel in the convenient can? Propane is much less expensive? http://www.alliedelec.com/search/productdetail.aspx?SKU=8615277 http://en.wikipedia.org/wiki/Aerosol_spray#Propellant --Winston Propane is cheaper, and it has higher vapor pressure. OIC. Thanks. --Winston |
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