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#1
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Spring loaded cutter
I'm looking for a spring loaded cutter to put on a cnc gantry machine. I
could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? |
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#2
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"kdoney" wrote in message . com... I'm looking for a spring loaded cutter to put on a cnc gantry machine. I could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? I'm sure this can be done. But, one question: WHY? |
#3
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"kdoney" wrote in message . com... I'm looking for a spring loaded cutter to put on a cnc gantry machine. I could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? You're describing what we called in the 70's, an odd shaped glass cutting machine. My brother designed and used one for years making duplicate lamp pieces. A stylus followed an engraved pattern in plexi, and the cuttter, using a pantograph system, scored the glass. I don't remember the PSI we used, but it worked on a very small compressor. I believe they are still being old. Google it. -- JK Sinrod Sinrod Stained Glass Studios www.sinrodstudios.com Coney Island Memories www.sinrodstudios.com/coneymemories |
#4
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Well for me it is a way to avoid using pneumatics in order to apply a,
mainly constant, pressure (15lbs) in the Z axis. Pneumatics are noisy. I would have thought a spring loaded cutter would be available for beginners to apply the right amount of pressure to the mainstream of glass without the experience to "know" how much pressure to apply. "Moonraker" wrote in message .. . "kdoney" wrote in message . com... I'm looking for a spring loaded cutter to put on a cnc gantry machine. I could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? I'm sure this can be done. But, one question: WHY? |
#5
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"kdoney" wrote in message . com... Well for me it is a way to avoid using pneumatics in order to apply a, mainly constant, pressure (15lbs) in the Z axis. Pneumatics are noisy. I would have thought a spring loaded cutter would be available for beginners to apply the right amount of pressure to the mainstream of glass without the experience to "know" how much pressure to apply. "Moonraker" wrote in message .. . "kdoney" wrote in message . com... I'm looking for a spring loaded cutter to put on a cnc gantry machine. I could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? I'm sure this can be done. But, one question: WHY? I think you missed the point of my "WHY"..... What are you trying to accomplish that takes a CNC machine to cut the glass with? If you are trying to cut lots of repetitive pieces, the fact that you have scored them with a machine still hasn't gotten the parts broken out of the big sheet, which has to be done by hand anyway. Secondly, given the "grain" of the glass and the color patterns and artistic considerations of where to put the pattern onto the glass sheet, the idea of mechanically cutting the glass is counterproductive from where I sit, both from an artistic and expense point. If you are trying to cut intricate parts, you probably won't be able to break them out of the glass anyway, unless you make relief scores on the inside curves. And if you have tight outside curves, the glass is likely to run off your score...right across another part the machine has scored. If you are planning on putting small pieces of glass in the CNC machine and mechanically holding them in place for the machne to score the glass.....I promise you any competent SG worker can keep pace with the machine with a lot less waste. If you are interested in cutting out many multiples of the same part, as in mass producing lamp shades, you need to be looking at water-jet cutting, If you are interested in making lots of "square" pieces out of one big sheet of plate glass....look in the CRLaurence catalog for the automated cutters. They have machines that will take a stock sheet and make lots of smaller pieces, minimizing waste. |
#6
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kdoney wrote:
Well for me it is a way to avoid using pneumatics in order to apply a, mainly constant, pressure (15lbs) in the Z axis. Pneumatics are noisy. I would have thought a spring loaded cutter would be available for beginners to apply the right amount of pressure to the mainstream of glass without the experience to "know" how much pressure to apply. They make machines that have a weight above the cutter to apply the pressure. I doubt it's as high as 15 lbs. Jack http://photos.yahoo.com/bc/xmissionbobo/ |
#7
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I thank you for all of the good information. It sounds challenging. I will
grant you that no machine process can duplicate the artistic element required for professional grade stained glass. I am a machinist, not an artist. I just want to be able to set my zero and let the machine give me the same part, over and over again. I do want to cut multiples of the same part and I want to nest cuts from the same sheet. I would go with a waterjet but these machines are extremely expensive. Are you saying that there is no algorithm which can be developed to decide how to cut a sheet of glass depending upon how the part is shaped? That would be depressing. "Moonraker" wrote in message ... "kdoney" wrote in message . com... Well for me it is a way to avoid using pneumatics in order to apply a, mainly constant, pressure (15lbs) in the Z axis. Pneumatics are noisy. I would have thought a spring loaded cutter would be available for beginners to apply the right amount of pressure to the mainstream of glass without the experience to "know" how much pressure to apply. "Moonraker" wrote in message .. . "kdoney" wrote in message . com... I'm looking for a spring loaded cutter to put on a cnc gantry machine. I could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? I'm sure this can be done. But, one question: WHY? I think you missed the point of my "WHY"..... What are you trying to accomplish that takes a CNC machine to cut the glass with? If you are trying to cut lots of repetitive pieces, the fact that you have scored them with a machine still hasn't gotten the parts broken out of the big sheet, which has to be done by hand anyway. Secondly, given the "grain" of the glass and the color patterns and artistic considerations of where to put the pattern onto the glass sheet, the idea of mechanically cutting the glass is counterproductive from where I sit, both from an artistic and expense point. If you are trying to cut intricate parts, you probably won't be able to break them out of the glass anyway, unless you make relief scores on the inside curves. And if you have tight outside curves, the glass is likely to run off your score...right across another part the machine has scored. If you are planning on putting small pieces of glass in the CNC machine and mechanically holding them in place for the machne to score the glass.....I promise you any competent SG worker can keep pace with the machine with a lot less waste. If you are interested in cutting out many multiples of the same part, as in mass producing lamp shades, you need to be looking at water-jet cutting, If you are interested in making lots of "square" pieces out of one big sheet of plate glass....look in the CRLaurence catalog for the automated cutters. They have machines that will take a stock sheet and make lots of smaller pieces, minimizing waste. |
#8
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"kdoney" wrote in message news I thank you for all of the good information. It sounds challenging. I will grant you that no machine process can duplicate the artistic element required for professional grade stained glass. I am a machinist, not an artist. I just want to be able to set my zero and let the machine give me the same part, over and over again. I do want to cut multiples of the same part and I want to nest cuts from the same sheet. I would go with a waterjet but these machines are extremely expensive. Are you saying that there is no algorithm which can be developed to decide how to cut a sheet of glass depending upon how the part is shaped? That would be depressing. I have no idea if such an algorithm exists. But I wouldn't hold my breath...... If you were planning on making "identical" parts from the same sheet, you could put them side by side, then have the machine make a dividing score between the rows, and then score another set, side-by-side. I suppose you could also have the machine do a dividing score between the parts, so that you could break apart the little rectangles and then weed out the scrap that surrounds the part. How big is the table for this machine? You'll likely have to cushion the table with some carpet between the glass and the table. "Moonraker" wrote in message ... "kdoney" wrote in message . com... Well for me it is a way to avoid using pneumatics in order to apply a, mainly constant, pressure (15lbs) in the Z axis. Pneumatics are noisy. I would have thought a spring loaded cutter would be available for beginners to apply the right amount of pressure to the mainstream of glass without the experience to "know" how much pressure to apply. "Moonraker" wrote in message .. . "kdoney" wrote in message . com... I'm looking for a spring loaded cutter to put on a cnc gantry machine. I could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? I'm sure this can be done. But, one question: WHY? I think you missed the point of my "WHY"..... What are you trying to accomplish that takes a CNC machine to cut the glass with? If you are trying to cut lots of repetitive pieces, the fact that you have scored them with a machine still hasn't gotten the parts broken out of the big sheet, which has to be done by hand anyway. Secondly, given the "grain" of the glass and the color patterns and artistic considerations of where to put the pattern onto the glass sheet, the idea of mechanically cutting the glass is counterproductive from where I sit, both from an artistic and expense point. If you are trying to cut intricate parts, you probably won't be able to break them out of the glass anyway, unless you make relief scores on the inside curves. And if you have tight outside curves, the glass is likely to run off your score...right across another part the machine has scored. If you are planning on putting small pieces of glass in the CNC machine and mechanically holding them in place for the machne to score the glass.....I promise you any competent SG worker can keep pace with the machine with a lot less waste. If you are interested in cutting out many multiples of the same part, a s in mass producing lamp shades, you need to be looking at water-jet cutting, If you are interested in making lots of "square" pieces out of one big sheet of plate glass....look in the CRLaurence catalog for the automated cutters. They have machines that will take a stock sheet and make lots of smaller pieces, minimizing waste. |
#9
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The table has a 2' X 3' travel and I imagined having a 1/2" felt table with
a vacuum underneath. How about just routing the whole thing? "Moonraker" wrote in message . .. "kdoney" wrote in message news I thank you for all of the good information. It sounds challenging. I will grant you that no machine process can duplicate the artistic element required for professional grade stained glass. I am a machinist, not an artist. I just want to be able to set my zero and let the machine give me the same part, over and over again. I do want to cut multiples of the same part and I want to nest cuts from the same sheet. I would go with a waterjet but these machines are extremely expensive. Are you saying that there is no algorithm which can be developed to decide how to cut a sheet of glass depending upon how the part is shaped? That would be depressing. I have no idea if such an algorithm exists. But I wouldn't hold my breath...... If you were planning on making "identical" parts from the same sheet, you could put them side by side, then have the machine make a dividing score between the rows, and then score another set, side-by-side. I suppose you could also have the machine do a dividing score between the parts, so that you could break apart the little rectangles and then weed out the scrap that surrounds the part. How big is the table for this machine? You'll likely have to cushion the table with some carpet between the glass and the table. "Moonraker" wrote in message ... "kdoney" wrote in message . com... Well for me it is a way to avoid using pneumatics in order to apply a, mainly constant, pressure (15lbs) in the Z axis. Pneumatics are noisy. I would have thought a spring loaded cutter would be available for beginners to apply the right amount of pressure to the mainstream of glass without the experience to "know" how much pressure to apply. "Moonraker" wrote in message .. . "kdoney" wrote in message . com... I'm looking for a spring loaded cutter to put on a cnc gantry machine. I could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? I'm sure this can be done. But, one question: WHY? I think you missed the point of my "WHY"..... What are you trying to accomplish that takes a CNC machine to cut the glass with? If you are trying to cut lots of repetitive pieces, the fact that you have scored them with a machine still hasn't gotten the parts broken out of the big sheet, which has to be done by hand anyway. Secondly, given the "grain" of the glass and the color patterns and artistic considerations of where to put the pattern onto the glass sheet, the idea of mechanically cutting the glass is counterproductive from where I sit, both from an artistic and expense point. If you are trying to cut intricate parts, you probably won't be able to break them out of the glass anyway, unless you make relief scores on the inside curves. And if you have tight outside curves, the glass is likely to run off your score...right across another part the machine has scored. If you are planning on putting small pieces of glass in the CNC machine and mechanically holding them in place for the machne to score the glass.....I promise you any competent SG worker can keep pace with the machine with a lot less waste. If you are interested in cutting out many multiples of the same part, a s in mass producing lamp shades, you need to be looking at water-jet cutting, If you are interested in making lots of "square" pieces out of one big sheet of plate glass....look in the CRLaurence catalog for the automated cutters. They have machines that will take a stock sheet and make lots of smaller pieces, minimizing waste. |
#10
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"jk" wrote in message . net... "kdoney" wrote in message . com... I'm looking for a spring loaded cutter to put on a cnc gantry machine. I could use a pneumatic actuator to apply the correct pressure but I'm looking for simple. Is 15 psig the correct pressure for most stained glass? Also, can I use my engraving head to cause the fissures by just cutting too deep? You're describing what we called in the 70's, an odd shaped glass cutting machine. My brother designed and used one for years making duplicate lamp pieces. A stylus followed an engraved pattern in plexi, and the cuttter, using a pantograph system, scored the glass. I don't remember the PSI we used, but it worked on a very small compressor. I believe they are still being old. Google it. -- JK Sinrod Sinrod Stained Glass Studios www.sinrodstudios.com Coney Island Memories www.sinrodstudios.com/coneymemories BillCo machinery?? |
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