[Public-List] thru hull fittings
Greenhouse, Matthew A. (GSFC-665.0)[EMERITUS]
matt.greenhouse at nasa.gov
Sat Mar 2 11:32:38 PST 2024
Gordon -- When you replace the through hull fittings, be sure to use a straight-to-tapered thread adapter between the fitting and the ball valve. Don't put the valve directly on the through hull fitting.
Matt Greenhouse
Friendship 295
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======================================================
Today's Topics:
1. A confession... (Gordon Laco)
2. Re: A confession... (gdinwiddie at alberg30.org)
3. Re: A confession... (Gordon Laco)
4. Re: A confession... (gdinwiddie at alberg30.org)
----------------------------------------------------------------------
Message: 1
Date: Sat, 2 Mar 2024 11:23:00 -0500
From: Gordon Laco <mainstay at csolve.net>
To: Alberg 30 Public List -- open to all
<public-list at lists.alberg30.org>
Subject: [Public-List] A confession...
Message-ID: <AC6ADE4C-80EF-4A0B-B41A-2BDACEE3D3F1 at csolve.net>
Content-Type: text/plain; charset=utf-8
Hello,
Well, big day today. I did something on the boat I?ve been wanting/meaning/needing to do for over twenty-five years.
Whitby Boatworks had among other bad habits, the habit of jury rigging their own through hull fittings. They?d take a piece of brass pipe, thread one end and push that through a hole made in the hull. outside, they?d put a large brass washer over the pipe, then with the nut on the threads inside, pound a mandrel into the open end of the brass pipe outside the boat, making a slight flare on the pipe against which the pipe pulls when the inside nut is tightened.
That?s not really a through hull fitting, partly due to the issue of the soft brass pipe eventually wanting to squeeze the flare out of itself, and partly due to the issue of the pipe wanting to turn against the washer when one is trying to snug the inside nut up hard tight to prevent leaks. And of course there is the danger of catastrophic failure if the thin walled pipe gives up resistance and gets pulled in through the outside washer. Boats sink when that happens. The hole would hard to get at to plug, and being so far down a lot of flooding can happen before one knows? putting the hole under the rising bilge water surface and impossible to find? oh what a nightmare.
So, all Alberg 30 owners are ?encouraged? to replace those jury-rigged through hull fittings. When I bought the boat in ?99 I replaced all of them but for the one serving the engine?s cooling water intake. I thought I couldn?t get the bronze strainer which covers the outside of the fitting off the boat. People had told me they?re bolted on and I couldn?t find the inside nuts of the bolts? and the outside of the thing was completely coated in 50 years of bottom paint. Intimidated, I put the job off year after year.
Today I went to the boat determined to chip away the paint and find the heads of the bolts, then murder them all by drilling their heads off and prying the strainer off the headless corpses of the bolts. I was then going to grind off the stumps of the bolts, and when I came to put the strainer back on after fitting a proper through hull fitting, rotate it a few degrees so as to miss the carcasses of the old bolts. I planned to drill new fastener holes, tap threads in them and drive in new #8 size machine screws.
I scraped off the old paint and found the slot heads of the fasteners?imagine my surprise when touched the first one with my drill bit, and it basically spun and fell out. The other three also came out too easily with only a few turns of my screw driver. They aren?t bolts? they?re very short self tapping screws in holes that were too large for them. Imagine that.
So the strainer came off. There, finally visible in clear daylight was the evil thin brass pipe through-hull fitting with the washer? the last one in the boat to be replaced. I?m going to do that next.
Onwards.
G
Gordon Laco
http://www.gordonlaco.com/ <http://www.gordonlaco.com/>
705-527-9612
Gordon Laco
http://www.gordonlaco.com/
705-527-9612
------------------------------
Message: 2
Date: Sat, 2 Mar 2024 12:30:11 -0500
From: gdinwiddie at alberg30.org
To: public-list at lists.alberg30.org
Subject: Re: [Public-List] A confession...
Message-ID: <aab827c8-74d5-4e9b-a947-d6f6f3657e00 at alberg30.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
Oh my goodness, Gord!
When we first hauled Calypso, I went to remove the gate valve on the engine intake, and the brass pipe fell off from the weight of the wrench. Gail was in the process of removing the strainer on the outside and asked "What's this washer?"
Please, EVERYONE, check your 1/2" intakes!
https://alberg30.org/maintenance/Plumbing/WhitbyThroughHull.html
- George
On 3/2/24 11:23 AM, Gordon Laco via Public-List wrote:
>
> Hello,
>
> Well, big day today. I did something on the boat I?ve been wanting/meaning/needing to do for over twenty-five years.
>
> Whitby Boatworks had among other bad habits, the habit of jury rigging their own through hull fittings. They?d take a piece of brass pipe, thread one end and push that through a hole made in the hull. outside, they?d put a large brass washer over the pipe, then with the nut on the threads inside, pound a mandrel into the open end of the brass pipe outside the boat, making a slight flare on the pipe against which the pipe pulls when the inside nut is tightened.
>
> That?s not really a through hull fitting, partly due to the issue of the soft brass pipe eventually wanting to squeeze the flare out of itself, and partly due to the issue of the pipe wanting to turn against the washer when one is trying to snug the inside nut up hard tight to prevent leaks. And of course there is the danger of catastrophic failure if the thin walled pipe gives up resistance and gets pulled in through the outside washer. Boats sink when that happens. The hole would hard to get at to plug, and being so far down a lot of flooding can happen before one knows? putting the hole under the rising bilge water surface and impossible to find? oh what a nightmare.
>
> So, all Alberg 30 owners are ?encouraged? to replace those jury-rigged through hull fittings. When I bought the boat in ?99 I replaced all of them but for the one serving the engine?s cooling water intake. I thought I couldn?t get the bronze strainer which covers the outside of the fitting off the boat. People had told me they?re bolted on and I couldn?t find the inside nuts of the bolts? and the outside of the thing was completely coated in 50 years of bottom paint. Intimidated, I put the job off year after year.
>
> Today I went to the boat determined to chip away the paint and find the heads of the bolts, then murder them all by drilling their heads off and prying the strainer off the headless corpses of the bolts. I was then going to grind off the stumps of the bolts, and when I came to put the strainer back on after fitting a proper through hull fitting, rotate it a few degrees so as to miss the carcasses of the old bolts. I planned to drill new fastener holes, tap threads in them and drive in new #8 size machine screws.
>
> I scraped off the old paint and found the slot heads of the fasteners?imagine my surprise when touched the first one with my drill bit, and it basically spun and fell out. The other three also came out too easily with only a few turns of my screw driver. They aren?t bolts? they?re very short self tapping screws in holes that were too large for them. Imagine that.
>
> So the strainer came off. There, finally visible in clear daylight was the evil thin brass pipe through-hull fitting with the washer? the last one in the boat to be replaced. I?m going to do that next.
>
> Onwards.
>
> G
>
>
> Gordon Laco
> http://www.g/
> ordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d576ab3
> 1e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C6
> 38449977750225645%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoi
> V2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=MlJ1kk6V%2Bd
> 3HddmMswhBN%2BIRoGShLe6yXasgH2dzGX8%3D&reserved=0
> <http://www/.
> gordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d576ab
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> 2URG2uoXtpujCCUEwY%2FoWBA9Ux%2B3M8Mk%3D&reserved=0>
> 705-527-9612
>
>
> Gordon Laco
> http://www.g/
> ordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d576ab3
> 1e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C6
> 38449977750232889%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoi
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> wa19uRJ0i3HcftdqFukSAyZ2E5pJTr8%3D&reserved=0
> 705-527-9612
>
>
>
> _______________________________________________
> These businesses support your Association:
> http://www.a/
> lberg30.org%2Fstore%2FA30supporters.html&data=05%7C02%7Cmatt.greenhous
> e%40nasa.gov%7Cf2d576ab31e949e9af5908dc3adf4144%7C7005d45845be48ae8140
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> ved=0
> Please support them.
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--
----------------------------------------------------------------------
When I remember bygone days George Dinwiddie
I think how evening follows morn; gdinwiddie at alberg30.org
So many I loved were not yet dead, http://www.alberg30.org/
So many I love were not yet born. also see:
'The Middle' by Ogden Nash http://idiacomputing.com/
----------------------------------------------------------------------
------------------------------
Message: 3
Date: Sat, 2 Mar 2024 12:31:43 -0500
From: Gordon Laco <mainstay at csolve.net>
To: Alberg 30 Public List -- open to all
<public-list at lists.alberg30.org>
Cc: gdinwiddie at alberg30.org
Subject: Re: [Public-List] A confession...
Message-ID: <726CA369-8436-41F1-9F48-A451736750FD at csolve.net>
Content-Type: text/plain; charset=utf-8
Yup, I know? that?s why I called the message below ?confession?. I certainly knew better. Well finally I?m dealing with it as I did with all the others.
G
Gordon Laco
http://www.gordonlaco.com/
705-527-9612
> On Mar 2, 2024, at 12:30 PM, George Dinwiddie via Public-List <public-list at lists.alberg30.org> wrote:
>
> Oh my goodness, Gord!
>
> When we first hauled Calypso, I went to remove the gate valve on the engine intake, and the brass pipe fell off from the weight of the wrench. Gail was in the process of removing the strainer on the outside and asked "What's this washer?"
>
> Please, EVERYONE, check your 1/2" intakes!
> https://albe/
> rg30.org%2Fmaintenance%2FPlumbing%2FWhitbyThroughHull.html&data=05%7C0
> 2%7Cmatt.greenhouse%40nasa.gov%7Cf2d576ab31e949e9af5908dc3adf4144%7C70
> 05d45845be48ae8140d43da96dd17b%7C0%7C0%7C638449977750253968%7CUnknown%
> 7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJX
> VCI6Mn0%3D%7C0%7C%7C%7C&sdata=rv21OlFbDA7%2B6gaFdf5dN45twheYFVXrbLbrEE
> h9zlw%3D&reserved=0
>
> - George
>
> On 3/2/24 11:23 AM, Gordon Laco via Public-List wrote:
>> Hello,
>> Well, big day today. I did something on the boat I?ve been wanting/meaning/needing to do for over twenty-five years.
>> Whitby Boatworks had among other bad habits, the habit of jury rigging their own through hull fittings. They?d take a piece of brass pipe, thread one end and push that through a hole made in the hull. outside, they?d put a large brass washer over the pipe, then with the nut on the threads inside, pound a mandrel into the open end of the brass pipe outside the boat, making a slight flare on the pipe against which the pipe pulls when the inside nut is tightened.
>> That?s not really a through hull fitting, partly due to the issue of the soft brass pipe eventually wanting to squeeze the flare out of itself, and partly due to the issue of the pipe wanting to turn against the washer when one is trying to snug the inside nut up hard tight to prevent leaks. And of course there is the danger of catastrophic failure if the thin walled pipe gives up resistance and gets pulled in through the outside washer. Boats sink when that happens. The hole would hard to get at to plug, and being so far down a lot of flooding can happen before one knows? putting the hole under the rising bilge water surface and impossible to find? oh what a nightmare.
>> So, all Alberg 30 owners are ?encouraged? to replace those jury-rigged through hull fittings. When I bought the boat in ?99 I replaced all of them but for the one serving the engine?s cooling water intake. I thought I couldn?t get the bronze strainer which covers the outside of the fitting off the boat. People had told me they?re bolted on and I couldn?t find the inside nuts of the bolts? and the outside of the thing was completely coated in 50 years of bottom paint. Intimidated, I put the job off year after year.
>> Today I went to the boat determined to chip away the paint and find the heads of the bolts, then murder them all by drilling their heads off and prying the strainer off the headless corpses of the bolts. I was then going to grind off the stumps of the bolts, and when I came to put the strainer back on after fitting a proper through hull fitting, rotate it a few degrees so as to miss the carcasses of the old bolts. I planned to drill new fastener holes, tap threads in them and drive in new #8 size machine screws.
>> I scraped off the old paint and found the slot heads of the fasteners?imagine my surprise when touched the first one with my drill bit, and it basically spun and fell out. The other three also came out too easily with only a few turns of my screw driver. They aren?t bolts? they?re very short self tapping screws in holes that were too large for them. Imagine that.
>> So the strainer came off. There, finally visible in clear daylight was the evil thin brass pipe through-hull fitting with the washer? the last one in the boat to be replaced. I?m going to do that next.
>> Onwards.
>> G
>> Gordon Laco
>> http://www/.
>> gordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d576a
>> b31e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%
>> 7C638449977750257396%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQ
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>> Rbm5UC8aOHRPiCQIWG2elPvtvM1VXtD1Oc2o%3D&reserved=0
>> <http://www/
>> .gordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d576
>> ab31e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0
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>> vHDTCIkFz37hBNBCL71MN4V7JEnOa8eC%2BcuTc%3D&reserved=0>
>> 705-527-9612
>> Gordon Laco
>> http://www/.
>> gordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d576a
>> b31e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%
>> 7C638449977750264276%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQ
>> IjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=dFhD4SW
>> M6EToj3LjarFhd4NRuRIZbn3ZcF7HbXv3xfw%3D&reserved=0
>> 705-527-9612
>> _______________________________________________
>> These businesses support your Association:
>> http://www/.
>> alberg30.org%2Fstore%2FA30supporters.html&data=05%7C02%7Cmatt.greenho
>> use%40nasa.gov%7Cf2d576ab31e949e9af5908dc3adf4144%7C7005d45845be48ae8
>> 140d43da96dd17b%7C0%7C0%7C638449977750267710%7CUnknown%7CTWFpbGZsb3d8
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>> erved=0
>> Please support them.
>> _______________________________________________
>> Public-List mailing list
>> Public-List at lists.alberg30.org
>> http://list/
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>> %7Cmatt.greenhouse%40nasa.gov%7Cf2d576ab31e949e9af5908dc3adf4144%7C70
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>> %2Fcu%2Fu0mM%3D&reserved=0
>
> --
> ----------------------------------------------------------------------
> When I remember bygone days George Dinwiddie
> I think how evening follows morn; gdinwiddie at alberg30.org
> So many I loved were not yet dead, http://www.alberg30.org/
> So many I love were not yet born. also see:
> 'The Middle' by Ogden Nash http://idiacomputing.com/
> ----------------------------------------------------------------------
>
>
>
> _______________________________________________
> These businesses support your Association:
> http://www.a/
> lberg30.org%2Fstore%2FA30supporters.html&data=05%7C02%7Cmatt.greenhous
> e%40nasa.gov%7Cf2d576ab31e949e9af5908dc3adf4144%7C7005d45845be48ae8140
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> 7C%7C&sdata=YeLX9IA0rqUwbMq160%2ByIzXNyIDfYKDwzBRUEc8I8IY%3D&reserved=
> 0
> Please support them.
> _______________________________________________
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> %3D&reserved=0
------------------------------
Message: 4
Date: Sat, 2 Mar 2024 12:34:43 -0500
From: gdinwiddie at alberg30.org
To: Gordon Laco via Public-List <public-list at lists.alberg30.org>
Subject: Re: [Public-List] A confession...
Message-ID: <27c54178-7ef0-477f-82d5-8a21574a651e at alberg30.org>
Content-Type: text/plain; charset=UTF-8; format=flowed
I understand. I'm just very glad it didn't decide to remove itself at some inopportune time.
hugs,
George
On 3/2/24 12:31 PM, Gordon Laco via Public-List wrote:
> Yup, I know? that?s why I called the message below ?confession?. I certainly knew better. Well finally I?m dealing with it as I did with all the others.
>
> G
>
> Gordon Laco
> http://www.g/
> ordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d576ab3
> 1e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C6
> 38449977750288867%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoi
> V2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=zUEo78V3%2FI
> Vbq9UpvQglBDw8YM6LLpmyitNhg4Zo0Jw%3D&reserved=0
> 705-527-9612
>
>
>
>> On Mar 2, 2024, at 12:30 PM, George Dinwiddie via Public-List <public-list at lists.alberg30.org> wrote:
>>
>> Oh my goodness, Gord!
>>
>> When we first hauled Calypso, I went to remove the gate valve on the engine intake, and the brass pipe fell off from the weight of the wrench. Gail was in the process of removing the strainer on the outside and asked "What's this washer?"
>>
>> Please, EVERYONE, check your 1/2" intakes!
>> https://alb/
>> erg30.org%2Fmaintenance%2FPlumbing%2FWhitbyThroughHull.html&data=05%7
>> C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d576ab31e949e9af5908dc3adf4144%7
>> C7005d45845be48ae8140d43da96dd17b%7C0%7C0%7C638449977750292298%7CUnkn
>> own%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWw
>> iLCJXVCI6Mn0%3D%7C0%7C%7C%7C&sdata=WCZivRgZmvWhvXZdsHe6TCbzjftFLRqIpa
>> kEAzuQU7Q%3D&reserved=0
>>
>> - George
>>
>> On 3/2/24 11:23 AM, Gordon Laco via Public-List wrote:
>>> Hello,
>>> Well, big day today. I did something on the boat I?ve been wanting/meaning/needing to do for over twenty-five years.
>>> Whitby Boatworks had among other bad habits, the habit of jury rigging their own through hull fittings. They?d take a piece of brass pipe, thread one end and push that through a hole made in the hull. outside, they?d put a large brass washer over the pipe, then with the nut on the threads inside, pound a mandrel into the open end of the brass pipe outside the boat, making a slight flare on the pipe against which the pipe pulls when the inside nut is tightened.
>>> That?s not really a through hull fitting, partly due to the issue of the soft brass pipe eventually wanting to squeeze the flare out of itself, and partly due to the issue of the pipe wanting to turn against the washer when one is trying to snug the inside nut up hard tight to prevent leaks. And of course there is the danger of catastrophic failure if the thin walled pipe gives up resistance and gets pulled in through the outside washer. Boats sink when that happens. The hole would hard to get at to plug, and being so far down a lot of flooding can happen before one knows? putting the hole under the rising bilge water surface and impossible to find? oh what a nightmare.
>>> So, all Alberg 30 owners are ?encouraged? to replace those jury-rigged through hull fittings. When I bought the boat in ?99 I replaced all of them but for the one serving the engine?s cooling water intake. I thought I couldn?t get the bronze strainer which covers the outside of the fitting off the boat. People had told me they?re bolted on and I couldn?t find the inside nuts of the bolts? and the outside of the thing was completely coated in 50 years of bottom paint. Intimidated, I put the job off year after year.
>>> Today I went to the boat determined to chip away the paint and find the heads of the bolts, then murder them all by drilling their heads off and prying the strainer off the headless corpses of the bolts. I was then going to grind off the stumps of the bolts, and when I came to put the strainer back on after fitting a proper through hull fitting, rotate it a few degrees so as to miss the carcasses of the old bolts. I planned to drill new fastener holes, tap threads in them and drive in new #8 size machine screws.
>>> I scraped off the old paint and found the slot heads of the fasteners?imagine my surprise when touched the first one with my drill bit, and it basically spun and fell out. The other three also came out too easily with only a few turns of my screw driver. They aren?t bolts? they?re very short self tapping screws in holes that were too large for them. Imagine that.
>>> So the strainer came off. There, finally visible in clear daylight was the evil thin brass pipe through-hull fitting with the washer? the last one in the boat to be replaced. I?m going to do that next.
>>> Onwards.
>>> G
>>> Gordon Laco
>>> http://www/
>>> .gordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d57
>>> 6ab31e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%7
>>> C0%7C638449977750295733%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAi
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>>> %2FM4AY62XZjY0cfEfmU5tu4b2df9TKWcsutad6by50%3D&reserved=0
>>> <http://ww/
>>> w.gordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d5
>>> 76ab31e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%
>>> 7C0%7C638449977750299252%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDA
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>>> pzLe2mcLuXxNFmz3Qzxrpdazh%2BpBCo0Q5oZSoaShkQ%3D&reserved=0>
>>> 705-527-9612
>>> Gordon Laco
>>> http://www/
>>> .gordonlaco.com%2F&data=05%7C02%7Cmatt.greenhouse%40nasa.gov%7Cf2d57
>>> 6ab31e949e9af5908dc3adf4144%7C7005d45845be48ae8140d43da96dd17b%7C0%7
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>>> 705-527-9612
>>> _______________________________________________
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>>
>> --
>> ----------------------------------------------------------------------
>> When I remember bygone days George Dinwiddie
>> I think how evening follows morn; gdinwiddie at alberg30.org
>> So many I loved were not yet dead, http://www.alberg30.org/
>> So many I love were not yet born. also see:
>> 'The Middle' by Ogden Nash http://idiacomputing.com/
>> ---------------------------------------------------------------------
>> -
>>
>>
>>
>> _______________________________________________
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>> 140d43da96dd17b%7C0%7C0%7C638449977750320122%7CUnknown%7CTWFpbGZsb3d8
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>
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--
----------------------------------------------------------------------
When I remember bygone days George Dinwiddie
I think how evening follows morn; gdinwiddie at alberg30.org
So many I loved were not yet dead, http://www.alberg30.org/
So many I love were not yet born. also see:
'The Middle' by Ogden Nash http://idiacomputing.com/
----------------------------------------------------------------------
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