continuous action solder sucker
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From: rush14 on 1 Jul 2010 10:40 On Jun 29, 11:05 am, rush14 <rus...(a)columbus.rr.com> wrote: > I'm attempting to fabricate a continuous action solder sucker along > the lines of those used at work > > when repairing circuit boards. They were fast, clean, easy to use and > prevented damage to the circuit boards from excessive prolonged heat. > > Unfortunately I'm now retired and the factory work has all been > outsourced overseas. There's nobody left now from work who would know > about this. > > As I recall they consisted of a vacuum source (unknown to me), a > flexible hose connected to a small cylinder with a tuft of steel wool > inside to trap solder and a teflon sucking tip at the other end of > the cylinder. > > Apparently there is more to vacuum technology than I imagined because > all my attempts have so far failed miserably. When I adapt a short > (~3 foot) flexible hose to my vacuum source the suction at the end of > the hose is almost non-existent. > > My first attempt was using the air intake of a 12V automotive tire > inflator, an idea I got from extensive Google searching, although not > intended for that purpose. There seemed to be plenty of suction at the > air intake itself but almost no suction at the end of the flexible > hose. > > I then decided to go to extremes and adapted the hose to the vacuum > port of a powerful shop vac. I actually expected the hose to collapse > from excessive vacuum but instead there was again almost no suction at > the end of the hose. I then added a secondary intake port to > alleviate what I thought might be excessive load on the shop vac then > tried using the shop vac exhaust port to create a vacuum. Neither > attempt worked. > > I would normally give up but I know the theory behind it works from my > experience at the factory. I'm apparently ignorant in the physics of > vacuum. > > I'm also familiar with other desoldering tools including plunger and > squeeze bulb solder suckers, solder wick and built in suckers on > soldering irons. I've found them all lacking in one way or another > compared to the gizmo I'm trying to imitate from the factory. > > Any ideas from you guys about the error of my ways will be greatly > appreciated. > > Thanks a bunch, > Rush I appreciate the 5 responses I received and all your advice is well taken. I admit to being obsessed with this challenge. I'm retired from industrial electronics and now consider myself only a hobbyist so the commercial equivalents of what I'm trying to do are just not feasible. I still don't understand why the small pumps used in commercial desoldering equipment far outperform the shop vac I had tried. The shop vac experiment was only an overkill step in an attempt to begin fine tuning the solder sucker idea. Thanks again for your input, Rush
From: GregS on 1 Jul 2010 10:58 In article <732fbe89-97bd-499f-ad18-99066ece2603(a)d37g2000yqm.googlegroups.com>, rush14 <rush14(a)columbus.rr.com> wrote: >On Jun 29, 11:05=A0am, rush14 <rus...(a)columbus.rr.com> wrote: >> I'm attempting to fabricate a continuous action solder sucker along >> the lines of those used at work >> >> when repairing circuit boards. =A0They were fast, clean, easy to use and >> prevented damage to the circuit boards from excessive prolonged heat. >> >> Unfortunately I'm now retired and the factory work has all been >> outsourced overseas. =A0There's nobody left now from work who would know >> about this. >> >> As I recall they consisted of a vacuum source (unknown to me), a >> flexible hose connected to a small cylinder with a tuft of steel wool >> inside to trap solder and a =A0teflon sucking tip at the other end of >> the cylinder. >> >> Apparently there is more to vacuum technology than I imagined because >> all my attempts have so far failed miserably. =A0When I adapt a short >> (~3 foot) flexible hose to my vacuum source the suction at the end of >> the hose is almost non-existent. >> >> My first attempt was using the air intake of a 12V automotive tire >> inflator, an idea I got from extensive Google searching, although not >> intended for that purpose. There seemed to be plenty of suction at the >> air intake itself but almost no suction at the end of the flexible >> hose. >> >> I then decided to go to extremes and adapted the hose to the vacuum >> port of a powerful shop vac. =A0I actually expected the hose to collapse >> from excessive vacuum but instead there was again almost no suction at >> the end of the hose. =A0I then added a secondary intake port to >> alleviate what I thought might be excessive load on the shop vac then >> tried using the shop vac exhaust port to create a vacuum. =A0Neither >> attempt worked. >> >> I would normally give up but I know the theory behind it works from my >> experience at the factory. =A0I'm apparently ignorant in the physics of >> vacuum. >> >> I'm also familiar with other desoldering tools including plunger and >> squeeze bulb solder suckers, solder wick and built in suckers on >> soldering irons. =A0I've found them all lacking in one way or another >> compared to the gizmo I'm trying to imitate from the factory. >> >> Any ideas from you guys about the error of my ways will be greatly >> appreciated. >> >> Thanks a bunch, >> Rush > >I appreciate the 5 responses I received and all your advice is well >taken. I admit to being obsessed with this challenge. I'm retired >from industrial electronics and now consider myself only a hobbyist so >the commercial equivalents of what I'm trying to do are just not >feasible. > >I still don't understand why the small pumps used in commercial >desoldering equipment far outperform the shop vac I had tried. The >shop vac experiment was only an overkill step in an attempt to begin >fine tuning the solder sucker idea. > High volume is not necessarily high vacuum. You will have to measure the vacuum. My little 170 cfm radon fan will suck two inches of water. greg
From: Jim Yanik on 1 Jul 2010 20:04 zekfrivo(a)zekfrivolous.com (GregS) wrote in news:i0iabg$r25$3(a)usenet01.srv.cis.pitt.edu: > In article > <732fbe89-97bd-499f-ad18-99066ece2603(a)d37g2000yqm.googlegroups.com>, > rush14 <rush14(a)columbus.rr.com> wrote: >>On Jun 29, 11:05=A0am, rush14 <rus...(a)columbus.rr.com> wrote: >>> I'm attempting to fabricate a continuous action solder sucker along >>> the lines of those used at work >>> >>> when repairing circuit boards. =A0They were fast, clean, easy to use >>> and prevented damage to the circuit boards from excessive prolonged >>> heat. >>> >>> Unfortunately I'm now retired and the factory work has all been >>> outsourced overseas. =A0There's nobody left now from work who would >>> know about this. >>> >>> As I recall they consisted of a vacuum source (unknown to me), a >>> flexible hose connected to a small cylinder with a tuft of steel >>> wool inside to trap solder and a =A0teflon sucking tip at the other >>> end of the cylinder. >>> >>> Apparently there is more to vacuum technology than I imagined >>> because all my attempts have so far failed miserably. =A0When I >>> adapt a short (~3 foot) flexible hose to my vacuum source the >>> suction at the end of the hose is almost non-existent. >>> >>> My first attempt was using the air intake of a 12V automotive tire >>> inflator, an idea I got from extensive Google searching, although >>> not intended for that purpose. There seemed to be plenty of suction >>> at the air intake itself but almost no suction at the end of the >>> flexible hose. >>> >>> I then decided to go to extremes and adapted the hose to the vacuum >>> port of a powerful shop vac. =A0I actually expected the hose to >>> collapse from excessive vacuum but instead there was again almost no >>> suction at the end of the hose. =A0I then added a secondary intake >>> port to alleviate what I thought might be excessive load on the shop >>> vac then tried using the shop vac exhaust port to create a vacuum. >>> =A0Neither attempt worked. >>> >>> I would normally give up but I know the theory behind it works from >>> my experience at the factory. =A0I'm apparently ignorant in the >>> physics of vacuum. >>> >>> I'm also familiar with other desoldering tools including plunger and >>> squeeze bulb solder suckers, solder wick and built in suckers on >>> soldering irons. =A0I've found them all lacking in one way or >>> another compared to the gizmo I'm trying to imitate from the >>> factory. >>> >>> Any ideas from you guys about the error of my ways will be greatly >>> appreciated. >>> >>> Thanks a bunch, >>> Rush >> >>I appreciate the 5 responses I received and all your advice is well >>taken. I admit to being obsessed with this challenge. I'm retired >>from industrial electronics and now consider myself only a hobbyist so >>the commercial equivalents of what I'm trying to do are just not >>feasible. >> >>I still don't understand why the small pumps used in commercial >>desoldering equipment far outperform the shop vac I had tried. The >>shop vac experiment was only an overkill step in an attempt to begin >>fine tuning the solder sucker idea. >> > > High volume is not necessarily high vacuum. You will have to measure > the vacuum. My little 170 cfm radon fan will suck two inches of water. > > greg > you can buy a venturi vacuum generator from Harbor Freight at very low cost,they make one for evacuation auto air conditioning systems. It needs a compressed air line. it will work continuously,off a small compressor. -- Jim Yanik jyanik at localnet dot com
From: Michael A. Terrell on 2 Jul 2010 02:21
Jim Yanik wrote: > > zekfrivo(a)zekfrivolous.com (GregS) wrote in > news:i0iabg$r25$3(a)usenet01.srv.cis.pitt.edu: > > > In article > > <732fbe89-97bd-499f-ad18-99066ece2603(a)d37g2000yqm.googlegroups.com>, > > rush14 <rush14(a)columbus.rr.com> wrote: > >>On Jun 29, 11:05=A0am, rush14 <rus...(a)columbus.rr.com> wrote: > >>> I'm attempting to fabricate a continuous action solder sucker along > >>> the lines of those used at work > >>> > >>> when repairing circuit boards. =A0They were fast, clean, easy to use > >>> and prevented damage to the circuit boards from excessive prolonged > >>> heat. > >>> > >>> Unfortunately I'm now retired and the factory work has all been > >>> outsourced overseas. =A0There's nobody left now from work who would > >>> know about this. > >>> > >>> As I recall they consisted of a vacuum source (unknown to me), a > >>> flexible hose connected to a small cylinder with a tuft of steel > >>> wool inside to trap solder and a =A0teflon sucking tip at the other > >>> end of the cylinder. > >>> > >>> Apparently there is more to vacuum technology than I imagined > >>> because all my attempts have so far failed miserably. =A0When I > >>> adapt a short (~3 foot) flexible hose to my vacuum source the > >>> suction at the end of the hose is almost non-existent. > >>> > >>> My first attempt was using the air intake of a 12V automotive tire > >>> inflator, an idea I got from extensive Google searching, although > >>> not intended for that purpose. There seemed to be plenty of suction > >>> at the air intake itself but almost no suction at the end of the > >>> flexible hose. > >>> > >>> I then decided to go to extremes and adapted the hose to the vacuum > >>> port of a powerful shop vac. =A0I actually expected the hose to > >>> collapse from excessive vacuum but instead there was again almost no > >>> suction at the end of the hose. =A0I then added a secondary intake > >>> port to alleviate what I thought might be excessive load on the shop > >>> vac then tried using the shop vac exhaust port to create a vacuum. > >>> =A0Neither attempt worked. > >>> > >>> I would normally give up but I know the theory behind it works from > >>> my experience at the factory. =A0I'm apparently ignorant in the > >>> physics of vacuum. > >>> > >>> I'm also familiar with other desoldering tools including plunger and > >>> squeeze bulb solder suckers, solder wick and built in suckers on > >>> soldering irons. =A0I've found them all lacking in one way or > >>> another compared to the gizmo I'm trying to imitate from the > >>> factory. > >>> > >>> Any ideas from you guys about the error of my ways will be greatly > >>> appreciated. > >>> > >>> Thanks a bunch, > >>> Rush > >> > >>I appreciate the 5 responses I received and all your advice is well > >>taken. I admit to being obsessed with this challenge. I'm retired > >>from industrial electronics and now consider myself only a hobbyist so > >>the commercial equivalents of what I'm trying to do are just not > >>feasible. > >> > >>I still don't understand why the small pumps used in commercial > >>desoldering equipment far outperform the shop vac I had tried. The > >>shop vac experiment was only an overkill step in an attempt to begin > >>fine tuning the solder sucker idea. > >> > > > > High volume is not necessarily high vacuum. You will have to measure > > the vacuum. My little 170 cfm radon fan will suck two inches of water. > > > > greg > > > > you can buy a venturi vacuum generator from Harbor Freight at very low > cost,they make one for evacuation auto air conditioning systems. > It needs a compressed air line. it will work continuously,off a small > compressor. They also have 2.5 & 3.5 CFM electric vacuum pumps. -- Anyone wanting to run for any political office in the US should have to have a DD214, and a honorable discharge. |