![]() |
If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#31
|
|||
|
|||
![]()
On Jul 7, 9:28*am, BJConner wrote:
On Jul 6, 12:07*pm, MajorOz wrote: On Jul 6, 6:15*am, riverman wrote: On Jul 6, 5:18*am, MajorOz wrote: On Jul 5, 7:36*pm, riverman wrote: On Jul 5, 3:27*pm, rw wrote: On 7/5/10 7:08 AM, rw wrote: On 7/5/10 5:12 AM, riverman wrote: I'm not convinced that heat expands the radius of the hole, as in a photographic enlargement. Objects expand around their physical mass. There is a classic physics demonstration with a steel ring and a steel ball where you heat the ring and find that the ball will not fit through the ring. So, just as the hole in a rising donut (or bagel is more like it) gets smaller, I would expect the hole to get smaller if you heated the female section. But countereffecting that would be that the circumference of the torus would also increase. Maybe there is some sort of ratio of circumference to torus thickness where the hole actually does not change....I don't know. But the action of the female end of a ferrule is a very thought-provoking thing. http://physics.bu.edu/~duffy/py105/Temperature.html BTW, I think you're misremembering the ring and ball experiment.. It actually demonstrates just what I (and others) have been saying about thermal expansion of a hole. -- Cut "to the chase" for my email address. You're right. I just saw this on youTubehttp://www.youtube.com/watch?v=V0ETKRz2UCA So OK, *the hole gets bigger when the female end is heated, however the male end gets bigger also. Which gets bigger faster? Read my post. *It explains what and why. oz Err, which one, Oz? The one where it says "can't guarantee anything, but that is the theory" or the one that says "disregard my response"? :-) --riverman They are both sincere (in context), but the one I had in mind was that the metal will expand or contract with temperature change based on the original (pick your starting point) temp. However, they all will change at percentage of the starting size (assuming identical composition). To wit: if expansion is X %, a three inch circle will expand to 3 in + *X% of three inches, while the little bit less than three inches will expand to LBLT3in. + X% of LBLT3in, resulting in an ever widening gap as temp increases. In sum: the gap between inside and outside widens with increasing temperature. Ideally, of course, fill the (hopefully) hollow inside one with water, freeze the whole mess, then zap the outside QUICKLY with heat and slip them apart. Kinda like baked Alaska. Works only with metal. *Obviously not with graphite. In a sever case in the past of irretrievably stuck graphite ferrules, I just wound up with a rod five inches shorter. ( Solution left as an exercise -- hint: it involved a jeweler's saw ) cheers oz- Hide quoted text - - Show quoted text - "In sum: the gap between inside and outside widens with increasing temperature. " Maby it does in the Russian navy but not anywhere else in the world. Although I have been aboard Russian (actually Soviet) ships, my engineering degrees are from US schools. Maby (sic) your experience is different ? cheers oz |
#32
|
|||
|
|||
![]()
On Jul 7, 9:57*am, MajorOz wrote:
On Jul 7, 9:28*am, BJConner wrote: On Jul 6, 12:07*pm, MajorOz wrote: On Jul 6, 6:15*am, riverman wrote: On Jul 6, 5:18*am, MajorOz wrote: On Jul 5, 7:36*pm, riverman wrote: On Jul 5, 3:27*pm, rw wrote: On 7/5/10 7:08 AM, rw wrote: On 7/5/10 5:12 AM, riverman wrote: I'm not convinced that heat expands the radius of the hole, as in a photographic enlargement. Objects expand around their physical mass. There is a classic physics demonstration with a steel ring and a steel ball where you heat the ring and find that the ball will not fit through the ring. So, just as the hole in a rising donut (or bagel is more like it) gets smaller, I would expect the hole to get smaller if you heated the female section. But countereffecting that would be that the circumference of the torus would also increase. Maybe there is some sort of ratio of circumference to torus thickness where the hole actually does not change....I don't know. But the action of the female end of a ferrule is a very thought-provoking thing. http://physics.bu.edu/~duffy/py105/Temperature.html BTW, I think you're misremembering the ring and ball experiment. It actually demonstrates just what I (and others) have been saying about thermal expansion of a hole. -- Cut "to the chase" for my email address. You're right. I just saw this on youTubehttp://www.youtube.com/watch?v=V0ETKRz2UCA So OK, *the hole gets bigger when the female end is heated, however the male end gets bigger also. Which gets bigger faster? Read my post. *It explains what and why. oz Err, which one, Oz? The one where it says "can't guarantee anything, but that is the theory" or the one that says "disregard my response"? :-) --riverman They are both sincere (in context), but the one I had in mind was that the metal will expand or contract with temperature change based on the original (pick your starting point) temp. However, they all will change at percentage of the starting size (assuming identical composition). To wit: if expansion is X %, a three inch circle will expand to 3 in + *X% of three inches, while the little bit less than three inches will expand to LBLT3in. + X% of LBLT3in, resulting in an ever widening gap as temp increases. In sum: the gap between inside and outside widens with increasing temperature. Ideally, of course, fill the (hopefully) hollow inside one with water, freeze the whole mess, then zap the outside QUICKLY with heat and slip them apart. Kinda like baked Alaska. Works only with metal. *Obviously not with graphite. In a sever case in the past of irretrievably stuck graphite ferrules, I just wound up with a rod five inches shorter. ( Solution left as an exercise -- hint: it involved a jeweler's saw ) cheers oz- Hide quoted text - - Show quoted text - "In sum: the gap between inside and outside widens with increasing temperature. " Maby it does in the Russian navy but not anywhere else in the world. Although I have been aboard Russian (actually Soviet) ships, my engineering degrees are from US schools. Maby (sic) your experience is different ? cheers oz- Hide quoted text - - Show quoted text - Your right. I was thinking about trigger guard assemblies or something. I had to go back and thing about a sections of RR track- one 100' long and one 101' . The units of change are in/in/degree IF you bend them into circles the circumference of the bigger circle grows more and the radius becomes greater. .. |
#33
|
|||
|
|||
![]()
On Jul 7, 11:44*pm, BJ Conner wrote:
I had to go back and thing about a sections of RR track- one 100' long and one 101' . * *The units of change are in/in/degree IF you bend them into circles the circumference of the bigger circle grows more and the radius becomes greater. Is this so that you can have parallel tracks in a turn with the end of each rail in alignment? And if the ends abut the next set of rails, then the expansion on each track is such that they remain an equal distance apart (the width of the train wheels)? --riverman |
#34
|
|||
|
|||
![]()
On Jul 7, 4:07*pm, riverman wrote:
On Jul 7, 11:44*pm, BJ Conner wrote: I had to go back and thing about a sections of RR track- one 100' long and one 101' . * *The units of change are in/in/degree IF you bend them into circles the circumference of the bigger circle grows more and the radius becomes greater. Is this so that you can have parallel tracks in a turn with the end of each rail in alignment? And if the ends abut the next set of rails, then the expansion on each track is such that they remain an equal distance apart (the width of the train wheels)? --riverman Spikes, ties and fishplates take care of that. |
#35
|
|||
|
|||
![]()
On Jul 7, 4:44*pm, BJ Conner wrote:
On Jul 7, 9:57*am, MajorOz wrote: On Jul 7, 9:28*am, BJConner wrote: On Jul 6, 12:07*pm, MajorOz wrote: On Jul 6, 6:15*am, riverman wrote: On Jul 6, 5:18*am, MajorOz wrote: On Jul 5, 7:36*pm, riverman wrote: On Jul 5, 3:27*pm, rw wrote: On 7/5/10 7:08 AM, rw wrote: On 7/5/10 5:12 AM, riverman wrote: I'm not convinced that heat expands the radius of the hole, as in a photographic enlargement. Objects expand around their physical mass. There is a classic physics demonstration with a steel ring and a steel ball where you heat the ring and find that the ball will not fit through the ring. So, just as the hole in a rising donut (or bagel is more like it) gets smaller, I would expect the hole to get smaller if you heated the female section. But countereffecting that would be that the circumference of the torus would also increase. Maybe there is some sort of ratio of circumference to torus thickness where the hole actually does not change....I don't know. But the action of the female end of a ferrule is a very thought-provoking thing. http://physics.bu.edu/~duffy/py105/Temperature.html BTW, I think you're misremembering the ring and ball experiment. It actually demonstrates just what I (and others) have been saying about thermal expansion of a hole. -- Cut "to the chase" for my email address. You're right. I just saw this on youTubehttp://www.youtube.com/watch?v=V0ETKRz2UCA So OK, *the hole gets bigger when the female end is heated, however the male end gets bigger also. Which gets bigger faster? Read my post. *It explains what and why. oz Err, which one, Oz? The one where it says "can't guarantee anything, but that is the theory" or the one that says "disregard my response"? :-) --riverman They are both sincere (in context), but the one I had in mind was that the metal will expand or contract with temperature change based on the original (pick your starting point) temp. However, they all will change at percentage of the starting size (assuming identical composition). To wit: if expansion is X %, a three inch circle will expand to 3 in + *X% of three inches, while the little bit less than three inches will expand to LBLT3in. + X% of LBLT3in, resulting in an ever widening gap as temp increases. In sum: the gap between inside and outside widens with increasing temperature. Ideally, of course, fill the (hopefully) hollow inside one with water, freeze the whole mess, then zap the outside QUICKLY with heat and slip them apart. Kinda like baked Alaska. Works only with metal. *Obviously not with graphite. In a sever case in the past of irretrievably stuck graphite ferrules, I just wound up with a rod five inches shorter. ( Solution left as an exercise -- hint: it involved a jeweler's saw ) cheers oz- Hide quoted text - - Show quoted text - "In sum: the gap between inside and outside widens with increasing temperature. " Maby it does in the Russian navy but not anywhere else in the world. Although I have been aboard Russian (actually Soviet) ships, my engineering degrees are from US schools. Maby (sic) your experience is different ? cheers oz- Hide quoted text - - Show quoted text - Your right. *I was thinking about trigger guard assemblies or something. I had to go back and thing about a sections of RR track- one 100' long and one 101' . * *The units of change are in/in/degree IF you bend them into circles the circumference of the bigger circle grows more and the radius becomes greater. . There is the old chestnut about a metal strap around a barrel. Cut the strap and insert a piece 10 ft long and then re-make it into a circle. Lay it down, so that the barrel is centered in the "hoop". Distance between barrel and hoop is a bit over 19 inches. Now put a metal strap around the earth. Increase, as above, the length by 10 feet. How "high" above the ground will it then be ? As before, about 19 inches. Around a marble? 19 inches. Irritating, but that's the way it is. cheers oz |
#36
|
|||
|
|||
![]()
On Jul 8, 6:04*am, MajorOz wrote:
On Jul 7, 4:44*pm, BJ Conner wrote: On Jul 7, 9:57*am, MajorOz wrote: On Jul 7, 9:28*am, BJConner wrote: On Jul 6, 12:07*pm, MajorOz wrote: On Jul 6, 6:15*am, riverman wrote: On Jul 6, 5:18*am, MajorOz wrote: On Jul 5, 7:36*pm, riverman wrote: On Jul 5, 3:27*pm, rw wrote: On 7/5/10 7:08 AM, rw wrote: On 7/5/10 5:12 AM, riverman wrote: I'm not convinced that heat expands the radius of the hole, as in a photographic enlargement. Objects expand around their physical mass. There is a classic physics demonstration with a steel ring and a steel ball where you heat the ring and find that the ball will not fit through the ring. So, just as the hole in a rising donut (or bagel is more like it) gets smaller, I would expect the hole to get smaller if you heated the female section. But countereffecting that would be that the circumference of the torus would also increase. Maybe there is some sort of ratio of circumference to torus thickness where the hole actually does not change....I don't know. But the action of the female end of a ferrule is a very thought-provoking thing. http://physics.bu.edu/~duffy/py105/Temperature.html BTW, I think you're misremembering the ring and ball experiment. It actually demonstrates just what I (and others) have been saying about thermal expansion of a hole. -- Cut "to the chase" for my email address. You're right. I just saw this on youTubehttp://www.youtube.com/watch?v=V0ETKRz2UCA So OK, *the hole gets bigger when the female end is heated, however the male end gets bigger also. Which gets bigger faster? Read my post. *It explains what and why. oz Err, which one, Oz? The one where it says "can't guarantee anything, but that is the theory" or the one that says "disregard my response"? :-) --riverman They are both sincere (in context), but the one I had in mind was that the metal will expand or contract with temperature change based on the original (pick your starting point) temp. However, they all will change at percentage of the starting size (assuming identical composition). To wit: if expansion is X %, a three inch circle will expand to 3 in + *X% of three inches, while the little bit less than three inches will expand to LBLT3in. + X% of LBLT3in, resulting in an ever widening gap as temp increases. In sum: the gap between inside and outside widens with increasing temperature. Ideally, of course, fill the (hopefully) hollow inside one with water, freeze the whole mess, then zap the outside QUICKLY with heat and slip them apart. Kinda like baked Alaska. Works only with metal. *Obviously not with graphite. In a sever case in the past of irretrievably stuck graphite ferrules, I just wound up with a rod five inches shorter. ( Solution left as an exercise -- hint: it involved a jeweler's saw ) cheers oz- Hide quoted text - - Show quoted text - "In sum: the gap between inside and outside widens with increasing temperature. " Maby it does in the Russian navy but not anywhere else in the world.. Although I have been aboard Russian (actually Soviet) ships, my engineering degrees are from US schools. Maby (sic) your experience is different ? cheers oz- Hide quoted text - - Show quoted text - Your right. *I was thinking about trigger guard assemblies or something. I had to go back and thing about a sections of RR track- one 100' long and one 101' . * *The units of change are in/in/degree IF you bend them into circles the circumference of the bigger circle grows more and the radius becomes greater. . There is the old chestnut about a metal strap around a barrel. *Cut the strap and insert a piece 10 ft long and then re-make it into a circle. *Lay it down, so that the barrel is centered in the "hoop". Distance between barrel and hoop is a bit over 19 inches. Now put a metal strap around the earth. *Increase, as above, the length by 10 feet. How "high" above the ground will it then be ? * * * * As before, about 19 inches. Around a marble? *19 inches. Irritating, but that's the way it is. cheers oz My favorite version of that goes the other way; how much do you have to add to a strap that surrounds the earth in order to raise it one inch off the ground? Turns out that its the same amount you have to add to your belt if you need to wrap it around a jacket that is one inch thick, or around the universe if it grows one inch in radius. --riverman |
#37
|
|||
|
|||
![]()
On Jul 8, 3:21*am, riverman wrote:
On Jul 8, 6:04*am, MajorOz wrote: On Jul 7, 4:44*pm, BJ Conner wrote: On Jul 7, 9:57*am, MajorOz wrote: On Jul 7, 9:28*am, BJConner wrote: On Jul 6, 12:07*pm, MajorOz wrote: On Jul 6, 6:15*am, riverman wrote: On Jul 6, 5:18*am, MajorOz wrote: On Jul 5, 7:36*pm, riverman wrote: On Jul 5, 3:27*pm, rw wrote: On 7/5/10 7:08 AM, rw wrote: On 7/5/10 5:12 AM, riverman wrote: I'm not convinced that heat expands the radius of the hole, as in a photographic enlargement. Objects expand around their physical mass. There is a classic physics demonstration with a steel ring and a steel ball where you heat the ring and find that the ball will not fit through the ring. So, just as the hole in a rising donut (or bagel is more like it) gets smaller, I would expect the hole to get smaller if you heated the female section. But countereffecting that would be that the circumference of the torus would also increase. Maybe there is some sort of ratio of circumference to torus thickness where the hole actually does not change....I don't know. But the action of the female end of a ferrule is a very thought-provoking thing. http://physics.bu.edu/~duffy/py105/Temperature.html BTW, I think you're misremembering the ring and ball experiment. It actually demonstrates just what I (and others) have been saying about thermal expansion of a hole. -- Cut "to the chase" for my email address. You're right. I just saw this on youTubehttp://www.youtube.com/watch?v=V0ETKRz2UCA So OK, *the hole gets bigger when the female end is heated, however the male end gets bigger also. Which gets bigger faster? Read my post. *It explains what and why. oz Err, which one, Oz? The one where it says "can't guarantee anything, but that is the theory" or the one that says "disregard my response"? :-) --riverman They are both sincere (in context), but the one I had in mind was that the metal will expand or contract with temperature change based on the original (pick your starting point) temp. However, they all will change at percentage of the starting size (assuming identical composition). To wit: if expansion is X %, a three inch circle will expand to 3 in + *X% of three inches, while the little bit less than three inches will expand to LBLT3in. + X% of LBLT3in, resulting in an ever widening gap as temp increases. In sum: the gap between inside and outside widens with increasing temperature. Ideally, of course, fill the (hopefully) hollow inside one with water, freeze the whole mess, then zap the outside QUICKLY with heat and slip them apart. Kinda like baked Alaska. Works only with metal. *Obviously not with graphite. In a sever case in the past of irretrievably stuck graphite ferrules, I just wound up with a rod five inches shorter. ( Solution left as an exercise -- hint: it involved a jeweler's saw ) cheers oz- Hide quoted text - - Show quoted text - "In sum: the gap between inside and outside widens with increasing temperature. " Maby it does in the Russian navy but not anywhere else in the world. Although I have been aboard Russian (actually Soviet) ships, my engineering degrees are from US schools. Maby (sic) your experience is different ? cheers oz- Hide quoted text - - Show quoted text - Your right. *I was thinking about trigger guard assemblies or something. I had to go back and thing about a sections of RR track- one 100' long and one 101' . * *The units of change are in/in/degree IF you bend them into circles the circumference of the bigger circle grows more and the radius becomes greater. . There is the old chestnut about a metal strap around a barrel. *Cut the strap and insert a piece 10 ft long and then re-make it into a circle. *Lay it down, so that the barrel is centered in the "hoop". Distance between barrel and hoop is a bit over 19 inches. Now put a metal strap around the earth. *Increase, as above, the length by 10 feet. How "high" above the ground will it then be ? * * * * As before, about 19 inches. Around a marble? *19 inches. Irritating, but that's the way it is. cheers oz My favorite version of that goes the other way; how much do you have to add to a strap that surrounds the earth in order to raise it one inch off the ground? Turns out that its the same amount you have to add to your belt if you need to wrap it around a jacket that is one inch thick, or around the universe if it grows one inch in radius. --riverman Brings to mind an interesting illustration I encountered recently in a book, a compendium of mathematical oddities, puzzles, trivia, etc. Evidently there is a highway that circles greater London. Don't remember exactly how long it is but I think it's 85 kilometers or thereabouts. In any case, as posited in the problem, there are two lanes in each direction. The question is how much distance (and thus how much time) can be saved by driving the entire cicuit in the inside lane as opposed to the outside lane, assuming the the lanes are each x feet (or whatever other unit of measurement one prefers) in width. Counterintuitively, the answer turns out to be something minuscule.....pi times the difference in radius, the latter value being something on the order of 5 or 6 yards. Surprising to those of us (the vast majority) who don't spend our lives immersed in mathematics to the exclusion of a world full of vastly more important and intersting stuff, but not hard to grasp for those of us (a minority, if personal experience is any guide) familar with the rudiments of euclidian geometry. The bottom line is that it obviously isn't worth the bother to stay in the inside lane. However..... The shortest path between two points is a straight line.....nevermind astrophysics, non-euclidian spaces, Eisteinian relativity and all that.....we're talking about getting from here to there on the surface of good old terra firma via automobile here. Of course much more often than not there is no straight line from here to there over any appreciable distance. The question that arises is whether or not it's worth the bother to pursue the closest approximation to a straight line that is possible on a given route. That is to say, over the course of, say, a thousand mile cross-country trip, is there a substantial savings in mileage and time to be gained by taking the inside lane in each curve, switching lanes as necessary and taking the shortest, straightest path possible between successive curves? Don't know. On the face of it, it appears that no simple equation (as in the original problem) is going to answer the question. Too much appears to depend on the number, shape, radii and length of the curves, as well as their spacing, which is to say, the lengths of the straight stretches between them. Personally, I've always felt that where consistent with safe driving it can't hurt to try, and have made an occasional practice of it, although I've never conducted anything approaching a rigorous experiment. giles |
#38
|
|||
|
|||
![]()
On Jul 8, 11:17*am, Giles wrote:
...the answer turns out to be something minuscule.....pi times the difference in radius.... Hm..... I guess that should be pi times the difference in diameter, eh? g. who notes that passing familiarity does not always imply infallible rectitude. |
#39
|
|||
|
|||
![]()
On Jul 8, 6:17*pm, Giles wrote:
The question that arises is whether or not it's worth the bother to pursue the closest approximation to a straight line that is possible on a given route. *That is to say, over the course of, say, a thousand mile cross-country trip, is there a substantial savings in mileage and time to be gained by taking the inside lane in each curve, switching lanes as necessary and taking the shortest, straightest path possible between successive curves? Don't know. * In a similar vein, the old Rand McNally Road Atlas used to have (maybe still does...) a great page in the back where it showed a few hundred cities as dots, and had little red lines connecting them, approximating the road networks. The lines were labeled with the distance and time required to travel between these adjacent cities. In my younger days I used to drive all over the place...a very similar pattern to my older life it appears....and relied on this page a lot for determining my route. I discovered that it was impossible to determine the best route from LA to Boston, as there were only short segments, but I assumed that if point C lay somewhere between point A and point B, then the shortest distance from A to C, then C to B, would be the shortest distance from A to C. Then, of course, add point D between A and C, and point E between A and D, etc.....and strangely enough...I soon found that the shortest distance from A to C worked itself out from the details. Seems obvious (and was later proven with mathematical studies of Hamiltonian Paths and Euler Circuits and Dijkstra's Algorithm) but you'd be suprised how many people will take the long (time and distance) route around town on a highway rather than the short (time and distance) route through town just because they are in love with feeling motion. Travelling 60mph for a half hour seems like its 'faster' than travelling 30 mph for 25 minutes, yet people do it. I think most people don't really think, let alone analyze, when they are doing stuff. Its refreshing to hear stories of people who do. You'd truly enjoy the opening chapter of "Beyond Numeracy' by John Allen Paulos. --riverman |
#40
|
|||
|
|||
![]()
On Jul 8, 2:46*pm, riverman wrote:
On Jul 8, 6:17*pm, Giles wrote: The question that arises is whether or not it's worth the bother to pursue the closest approximation to a straight line that is possible on a given route. *That is to say, over the course of, say, a thousand mile cross-country trip, is there a substantial savings in mileage and time to be gained by taking the inside lane in each curve, switching lanes as necessary and taking the shortest, straightest path possible between successive curves? Don't know. * In a similar vein, the old Rand McNally Road Atlas used to have (maybe still does...) a great page in the back where it showed a few hundred cities as dots, and had little red lines connecting them, approximating the road networks. The lines were labeled with the distance and time required to travel between these adjacent cities. In my younger days I used to drive all over the place...a very similar pattern to my older life it appears....and relied on this page a lot for determining my route. I discovered that it was impossible to determine the best route from LA to Boston, as there were only short segments, but I assumed that if point C lay somewhere between point A and point B, then the shortest distance from A to C, then C to B, would be the shortest distance from A to C. Then, of course, add point D between A and C, and point E between A and D, etc.....and strangely enough...I soon found that the shortest distance from A to C worked itself out from the details. Seems obvious (and was later proven with mathematical studies of Hamiltonian Paths and Euler Circuits and Dijkstra's Algorithm) but you'd be suprised how many people will take the long (time and distance) route around town on a highway rather than the short (time and distance) route through town just because they are in love with feeling motion. Travelling 60mph for a half hour seems like its 'faster' than travelling 30 mph for 25 minutes, yet people do it. I think most people don't really think, let alone analyze, when they are doing stuff. Its refreshing to hear stories of people who do. You'd truly enjoy the opening chapter of "Beyond Numeracy' by John Allen Paulos. --riverman I have always considered the best route to be neither the shortest nor the quickest, but that which resulted in the least hassle. That is the reason I won't, for instance, go straight through a large city, with its stoplights, emergency vehicles, etc, and prefer, usually, the beltways. However, for the same reason, I don't cross Wyoming on I-80, unless I am in a hurry. I prefer US 30. It is more peaceful, scenery is better, and there are fewer 18-wheelers (except in snow, when I-80 is closed and ALL THE TRUCKS clog up US 30) Enjoy the blue highways (Wm. Leastheat Moon) oz |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
Graphite ferrule repair question | Danl[_3_] | Fly Fishing | 7 | March 25th, 2008 11:12 PM |
Female Hendrickson Comparadun | bigduhon[_2_] | Fly Fishing Tying | 20 | March 21st, 2008 03:04 PM |
Female Hendrickson Comparadun | dcabarle[_20_] | Fly Fishing Tying | 1 | March 19th, 2008 04:43 PM |
internal ferrule problem | BeetleBaley | Fly Fishing | 43 | December 27th, 2004 12:24 PM |
VERY stuck ferrule | Bill Mason | Fly Fishing | 20 | October 18th, 2003 06:42 PM |