![]() |
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 |
|
#1
|
|||
|
|||
![]()
Frog's Fanny is, imho, a great boon to the flat water fly fisher ( not so
flat, too ), but it is pricey. I oscillate between wanting to support whoever is packaging it, because they have improved my fishing and deserve support .... and wanting to find the same stuff cheaper I vaguely remember ( about the only type of remember I experience at my age ) seeing something, somewhere, about the same material packaged for a different market .... I'm not the least sure it was on ROFF, but if you know of a different way to obtain this cool stuff ...let me know, please ..... and thank you, in advance |
#2
|
|||
|
|||
![]() "Larry L" schrieb im Newsbeitrag ... Frog's Fanny is, imho, a great boon to the flat water fly fisher ( not so flat, too ), but it is pricey. I oscillate between wanting to support whoever is packaging it, because they have improved my fishing and deserve support .... and wanting to find the same stuff cheaper I vaguely remember ( about the only type of remember I experience at my age ) seeing something, somewhere, about the same material packaged for a different market .... I'm not the least sure it was on ROFF, but if you know of a different way to obtain this cool stuff ...let me know, please ..... and thank you, in advance This is basically a powdered desiccant. The following might be of help to you; Silica gel is an amorphous form of silicon dioxide, which is synthetically produced in the form of hard irregular granules (having the appearance of crystals) or hard irregular beads. A microporous structure of interlocking cavities gives a very high surface area (800 square meters per gram). It is this structure that makes silica gel a high capacity desiccant. Water molecules adhere to the gels surface because it exhibits a lower vapour pressure than the surrounding air. When an equilibrium of equal pressure is reached, no more adsorption occurs. Thus the higher the humidity of the surrounding air, the greater the amount of water that is adsorbed before equilibrium is reached. It is in these higher humidity conditions (above 50% Relative Humidity) that stored or in-transit items are susceptible to damage. The beauty of silica gel is the physical adsorption of water vapour into its internal pores. There is no chemical reaction, no by-products or side effects. Even when saturated with water vapour, silica gel still has the appearance of a dry product, its shape unchanged. Advantages of silica gel as a desiccant. Silica gel has many other properties that recommend it as a desiccant. - It will adsorb up to one third of its own weight in water vapour. This adsorption efficiency is approximately 35% greater that typical desiccant clays, making silica gel the preferred choice where weight or efficiency are important factors. - It has an almost indefinite shelf life if stored in airtight conditions. - It can be regenerated and reused if required. Gently heating silica gel will drive off the adsorbed moisture and leave it ready for reuse. - It is a very inert material, it will not normally attack or corrode other materials and with the exception of strong alkalis and hydrofluoric acid is itself resistant to attack. - It is non-toxic and non-flammable. - It is most frequently and conveniently used packed in a breathable sachet or bag. These are available in a wide range of sizes suitable for use with a wide range of applications. Standard white silica gel is referred to as being non-indicating. As it adsorbs moisture it remains physically unchanged. Non-indicating silica gel is both cheap and effective, available loose in bulk packs or packed in sachets. Self-indicating silica gels are coloured gels whose colour changes as they adsorb moisture. Silica gel, is often used in the packing of electronic equipment and similar to prevent damage by condensation. It is usually in small paper sachets in the packing boxes. If you ask at an electrical goods store or similar they may be able to give you a whole load of it, as they just throw it away. Silica gel is in the form of small spheres usually, to use this as a fly drying medium, just grind these up in a coffee grinder or similar, you can also crush it with a hammer, and put in an airtight container such as a 35mm film can. To dry your fly, just dip it in the powder and shake, the fly is dry almost immediately. It is not a good idea to use silica gel in fly-boxes, because the gel will adsorb water from the surroundings, and may have the reverse effect to the one desired, holding moisture in your box. The best policy is to ensure your flies are perfectly dry before putting them back in the box. The best way to do this is to get a small plastic film canister with a snap on lid. Drill a series of holes with a small drill around the base, and around the upper rim. Drill a hole in the lid, pass a cord through it and knot it, and attach the other end to your vest or whatever. Used flies placed in this box dry perfectly, and relatively quickly. You cannot lose the flies ( flies tend to fall out of "drying-patches" and the like, especially barbless ones ! ), and your drying box may be emptied at the end of the day and the dry flies returned to the main box. This is the best way to dry flies I have yet discovered. Goose grease, bacon fat, lard ( rendered beef fat), suet, ( rendered kidney fat), and a host of other things will work as floatants. Palm oil ( cocoanut oil), which is sold in solid white blocks for cooking purposes, is also an excellent natural floatant. One old guy I used to know in Yorkshire dipped his dry flies in hot bacon fat, patted them dry on a soft cloth, and used them quite successfully. Preen gland oil from ducks ( although it has never been quite clear to me how this is obtained) is an excellent floatant. ( Perhaps there are whole tribes of "duck-milkers" wandering around? ). Some newer chemical treatments actually repel water. Silica gel, and some other drying crystals work well without floatants of any kind. Nowadays, one has even more problems with floatant, as it is unlikely that you will find a river anywhere which is not contaminated with detergent. This causes even tenacious floatants to be washed off very quickly indeed. There are several principles involved here. The main aim of the exercise is to prevent the flies getting wet. This may be achieved in several ways. The most common one is to coat the fly with a substance which is immiscible with water. But without clogging the hackles etc. Many oils work, but wash off too quickly. Some thicker oils clog the hackles. As soon as the hackle tips get wet, they start to penetrate the surface film, and this accelerates the wetting process further, and eventually the fly goes under. As we have quite a few fairly new subscribers here, it is perhaps just as well to repeat another point. There is no point applying floatant to a wet fly. It will sink. The fly is already wet, and applying "floatant" to it will avail you nothing. Your only recourse is to dry it carefully, and then re-apply floatant. There is no floatant extant which will provide a fly with positive buoyancy. If you read advertising blurb about floatant which says "Your flies float like corks", then this is pure hyperbole, They are physically incapable of doing anything of the sort, irrespective of whatever is plastered on them. The only flies which float like corks, are made of cork, or similar material, and in this case do not require floatant anyway. One of the main reasons that top quality dry fly hackles were prized by anglers, is the fact that these will stay afloat for quite a while without any treatment at all. Hardly anybody tries this nowadays, but it works exceedingly well. It requires a little more false casting to keep the hackles dry, and a well slimed fly ( fish slime is probably one of the best "sinkants" available), needs to be washed and dried before re-use. But it works very well. Quite a few people used thinned down varnish. This also stiffens hackles somewhat, but can cause a terrible mess. The first person to invent an intrinsically waterproof hackle will make a fortune. It surprises me that firms like Hoffman etc, have not apparently done much research in this area. It ought to be possible to breed a bird whose hackles are more waterproof. Adding scent to flies is not difficult. All sorts of things are now available which would allow one to do this, and I have no doubt that some people already do it. It rather defeats the object of fly-fishing though, which is to fool a fish by presenting him with a lifelike visual copy of whatever he happens to be feeding on. Adding scent to flies, brings in new dimensions, which many will not agree with. It may well be that a fish would take even a completely incorrect copy of a fly, simply because it smelled good. This again, defeats much of the objective for many. TL MC |
#3
|
|||
|
|||
![]() "Larry L" schrieb im Newsbeitrag ... Frog's Fanny is, imho, a great boon to the flat water fly fisher ( not so flat, too ), but it is pricey. I oscillate between wanting to support whoever is packaging it, because they have improved my fishing and deserve support .... and wanting to find the same stuff cheaper I vaguely remember ( about the only type of remember I experience at my age ) seeing something, somewhere, about the same material packaged for a different market .... I'm not the least sure it was on ROFF, but if you know of a different way to obtain this cool stuff ...let me know, please ..... and thank you, in advance Silica gel is an amorphous form of silicon dioxide, which is synthetically produced in the form of hard irregular granules (having the appearance of crystals) or hard irregular beads. A microporous structure of interlocking cavities gives a very high surface area (800 square meters per gram). It is this structure that makes silica gel a high capacity desiccant. Water molecules adhere to the gels surface because it exhibits a lower vapour pressure than the surrounding air. When an equilibrium of equal pressure is reached, no more adsorption occurs. Thus the higher the humidity of the surrounding air, the greater the amount of water that is adsorbed before equilibrium is reached. It is in these higher humidity conditions (above 50% Relative Humidity) that stored or in-transit items are susceptible to damage. The beauty of silica gel is the physical adsorption of water vapour into its internal pores. There is no chemical reaction, no by products or side effects. Even when saturated with water vapour, silica gel still has the appearance of a dry product, its shape unchanged. Advantages of silica gel as a desiccant. Silica gel has many other properties that recommend it as a desiccant. - It will adsorb up to one third of its own weight in water vapour. This adsorption efficiency is approximately 35% greater that typical desiccant clays, making silica gel the preferred choice where weight or efficiency are important factors. - It has an almost indefinite shelf life if stored in airtight conditions. - It can be regenerated and reused if required. Gently heating silica gel will drive off the adsorbed moisture and leave it ready for reuse. - It is a very inert material, it will not normally attack or corrode other materials and with the exception of strong alkalis and hydrofluoric acid is itself resistant to attack. - It is non-toxic and non-flammable. - It is most frequently and conveniently used packed in a breathable sachet or bag. These are available in a wide range of sizes suitable for use with a wide range of applications. Standard white silica gel is referred to as being non-indicating. As it adsorbs moisture it remains physically unchanged. Non-indicating silica gel is both cheap and effective, available loose in bulk packs or packed in sachets. Self-indicating silica gels are coloured gels whose colour changes as they adsorb moisture. The best and cheapest desiccant is Silica gel, this is often used for packing electronic equipment and similar to prevent damage by condensation. It is usually in small paper sachets in the packing boxes. If you ask at an electrical goods store or similar they may be able to give you a whole load of it, as they just throw it away. Silica gel is in the form of small spheres usually, to use this as a fly drying medium, just grind these up in a coffee grinder or similar, you can also crush it with a hammer, and put in an airtight container such as a 35mm film can. To dry your fly, just dip it in the powder and shake, the fly is dry almost immediately. It is not a good idea to use silica gel in fly-boxes, because the gel will adsorb water from the surroundings, and may have the reverse effect to the one desired, holding moisture in your box. The best policy is to ensure your flies are perfectly dry before putting them back in the box. The best way to do this is to get a small plastic film canister with a snap on lid. Drill a series of holes with a small drill around the base, and around the upper rim. Drill a hole in the lid, pass a cord through it and knot it, and attach the other end to your vest or whatever. Used flies placed in this box dry perfectly, and relatively quickly. You cannot lose the flies ( flies tend to fall out of "drying-patches" and the like, especially barbless ones ! ), and your drying box may be emptied at the end of the day and the dry flies returned to the main box. This is the best way to dry flies I have yet discovered. Goose grease, bacon fat, lard ( rendered beef fat), suet, ( rendered kidney fat), and a host of other things will work as floatants. Palm oil ( cocoanut oil), which is sold in solid white blocks for cooking purposes, is also an excellent natural floatant. One old guy I used to know in Yorkshire dipped his dry flies in hot bacon fat, patted them dry on a soft cloth, and used them quite successfully. Preen gland oil from ducks ( although it has never been quite clear to me how this is obtained) is an excellent floatant. ( Perhaps there are whole tribes of "duck-milkers" wandering around? ). Some newer chemical treatments actually repel water. Silica gel, and some other drying crystals work well without floatants of any kind. Nowadays, one has even more problems with floatant, as it is unlikely that you will find a river anywhere which is not contaminated with detergent. This causes even tenacious floatants to be washed off very quickly indeed. There are several principles involved here. The main aim of the exercise is to prevent the flies getting wet. This may be achieved in several ways. The most common one is to coat the fly with a substance which is immiscible with water. But without clogging the hackles etc. Many oils work, but wash off too quickly. Some thicker oils clog the hackles. As soon as the hackle tips get wet, they start to penetrate the surface film, and this accelerates the wetting process further, and eventually the fly goes under. As we have quite a few fairly new subscribers here, it is perhaps just as well to repeat another point. There is no point applying floatant to a wet fly. It will sink. The fly is already wet, and applying "floatant" to it will avail you nothing. Your only recourse is to dry it carefully, and then re-apply floatant. There is no floatant extant which will provide a fly with positive buoyancy. If you read advertising blurb about floatant which says "Your flies float like corks", then this is pure hyperbole, They are physically incapable of doing anything of the sort, irrespective of whatever is plastered on them. The only flies which float like corks, are made of cork, or similar material, and in this case do not require floatant anyway. One of the main reasons that top quality dry fly hackles were prized by anglers, is the fact that these will stay afloat for quite a while without any treatment at all. Hardly anybody tries this nowadays, but it works exceedingly well. It requires a little more false casting to keep the hackles dry, and a well slimed fly ( fish slime is probably one of the best "sinkants" available), needs to be washed and dried before re-use. But it works very well. Quite a few people used thinned down varnish. This also stiffens hackles somewhat, but can cause a terrible mess. The first person to invent an intrinsically waterproof hackle will make a fortune. It surprises me that firms like Hoffman etc, have not apparently done much research in this area. It ought to be possible to breed a bird whose hackles are more waterproof. Adding scent to flies is not difficult. All sorts of things are now available which would allow one to do this, and I have no doubt that some people already do it. It rather defeats the object of fly-fishing though, which is to fool a fish by presenting him with a lifelike visual copy of whatever he happens to be feeding on. Adding scent to flies, brings in new dimensions, which many will not agree with. It may well be that a fish would take even a completely incorrect copy of a fly, simply because it smelled good. This again, defeats much of the objective for many. TL MC |
#4
|
|||
|
|||
![]() "Mike Connor" wrote Preen gland oil from ducks ( although it has never been quite clear to me how this is obtained) is an excellent floatant. ( Perhaps there are whole tribes of "duck-milkers" wandering around? ). well crap, here comes another another sleepless night, trying to visualize duck milking on a large scale Hehe, I HAVE picked my own CDC off of wild birds, but I draw the line at duck butt milking |
#5
|
|||
|
|||
![]() Larry L wrote: Frog's Fanny is, imho, a great boon to the flat water fly fisher ( not so flat, too ), but it is pricey. I oscillate between wanting to support whoever is packaging it, because they have improved my fishing and deserve support .... and wanting to find the same stuff cheaper I vaguely remember ( about the only type of remember I experience at my age ) seeing something, somewhere, about the same material packaged for a different market .... I'm not the least sure it was on ROFF, but if you know of a different way to obtain this cool stuff ...let me know, please ..... and thank you, in advance I share your feelings on this. But I'm a cheap SOB and found Frog's Fanny pricey because I do go through alot. I bought a large bag (probably enough to fill 100s of containers) for $20 at a local fly shop. They told me it was toner. Snoop however, says that it is an agent they use in fiberglass construction. He used to build custom airplanes and had used it in the past. Hopefully he'll comment on this. It is definitely NOT silica gel No matter where you get it, it is great stuff. Has anyone tried the trick of using it on nymphs or wets? I keep meaning to try it during some caddis activity, but always forget. Willi |
#6
|
|||
|
|||
![]()
Willi wrote in news:401582f7$0$70305$75868355
@news.frii.net: I bought a large bag (probably enough to fill 100s of containers) for $20 at a local fly shop. They told me it was toner. Snoop however, says that it is an agent they use in fiberglass construction. He used to build custom airplanes and had used it in the past. Hopefully he'll comment on this. It is definitely NOT silica gel It would seem like the company would have to provide an MSDS to anyone who stocked the product. Has anyone asked for one?? Scott |
#7
|
|||
|
|||
![]()
I haven't tried Fanny on nymphs, but have used a different
dessicant/floatant combo whose name escapes me ... with good results My only use was with a Bird's Nest, shaken in the stuff, and then sunk via split shot on the Truckee River .... I caught fish .... which ones wouldn't have eaten just the Bird's Nest untreated, or how many pointed and laughed at the treated fly and let it drift on by, I don't know G |
#8
|
|||
|
|||
![]() "Willi" wrote I bought a large bag (probably enough to fill 100s of containers) for $20 at a local fly shop. They told me it was toner. Snoop however, says that it is an agent they use in fiberglass construction. He used to build custom airplanes and had used it in the past. Hopefully he'll comment on this. It is definitely NOT silica gel did you mean hobby shop? was there a brand name, product name, that I can ask for? |
#9
|
|||
|
|||
![]()
On Mon, 26 Jan 2004 21:29:26 GMT, "Larry L"
wrote: "Willi" wrote I bought a large bag (probably enough to fill 100s of containers) for $20 at a local fly shop. They told me it was toner. Snoop however, says that it is an agent they use in fiberglass construction. He used to build custom airplanes and had used it in the past. Hopefully he'll comment on this. It is definitely NOT silica gel did you mean hobby shop? was there a brand name, product name, that I can ask for? I wonder if it was "micro-balloons"... |
#10
|
|||
|
|||
![]()
Willi writes:
Has anyone tried the trick of using it on nymphs or wets? I keep meaning to try it during some caddis activity, but always forget. Yes! If the nymph is the "buggy" kind it works well. If the nymph has got plastic ribbing AND peacock herl, I put it on the herl, but it works best on buggy type nymphs. Dave http://hometown.aol.com/davplac/myhomepage/index.html |
Thread Tools | |
Display Modes | |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
REQ: Pitfall Trap plan (for frog) | canoe | General Discussion | 0 | September 23rd, 2003 12:44 PM |