Re: [bolger] FastBrick Rudder Blade
Fwiw, the listing does not specify an alloy, though some of the other
auctions are 6061. 6061 is certainly more corrosion resistant than bare
steel, but not great. I made a toilet flush handle shaped and painted
like a clown fish for my wife's day care and used 6061 for the linkage
because it's what I had. A year later it has 1/2" thick white and black
corrosion all around.
5052 would be a suitable, and cheaper, alloy, at least H32 hard, but is
about 20% less rigid than 5086 of the same hardness.
Bruce Hallman wrote:
auctions are 6061. 6061 is certainly more corrosion resistant than bare
steel, but not great. I made a toilet flush handle shaped and painted
like a clown fish for my wife's day care and used 6061 for the linkage
because it's what I had. A year later it has 1/2" thick white and black
corrosion all around.
5052 would be a suitable, and cheaper, alloy, at least H32 hard, but is
about 20% less rigid than 5086 of the same hardness.
Bruce Hallman wrote:
>I buy my aluminum plate on ebay
>
>This piece might work for you...
>
>http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7538219901
>
>
>
>
>> Does anybody have a source for this material elsewhere, or other ideas
>>
>>
>
>
>
>Bolger rules!!!
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Unless you're going to keep the boat in the water full time, it seems
unlikely that corrosion will be a problem. You could protect against
it by painting the rudder blade, over an epoxt coating if you thought
it worth the trouble.
Howard
unlikely that corrosion will be a problem. You could protect against
it by painting the rudder blade, over an epoxt coating if you thought
it worth the trouble.
Howard
I don't know another source for small quantities, but I can say that 21"
x 9" x 0.25" aluminum weighs about 4.6 lbs. Wholesale (sheet) cost
where I live would be *no more than* $3/lb. Retail is $4-$5/lb. Mandel
Metals, http://mandelmetals.com, has been good to me, but they charge
substantially more by weight unless you buy over 250 lbs. It's possible
they would sell you a scrap. If not, finding a suitable piece for less
than the $35/lb. you've been quoted should be possible.
adventures_in_astrophotography wrote:
x 9" x 0.25" aluminum weighs about 4.6 lbs. Wholesale (sheet) cost
where I live would be *no more than* $3/lb. Retail is $4-$5/lb. Mandel
Metals, http://mandelmetals.com, has been good to me, but they charge
substantially more by weight unless you buy over 250 lbs. It's possible
they would sell you a scrap. If not, finding a suitable piece for less
than the $35/lb. you've been quoted should be possible.
adventures_in_astrophotography wrote:
>The FastBrick building key calls for the 21" x 9" pivoting rudder blade
>to be made from 1/4" aluminum plate "of a seawater resistant alloy like
>5086." My local machine shop, friends who give me cut-rate deals on
>small parts for my astrophotography addiction, just quoted me $165 for
>the material alone! Ouch. No doubt part of the problem is due to my
>location in Colorado, far from any seawater.
>
>Does anybody have a source for this material elsewhere, or other ideas
>for a suitable substitute? I don't want to make the blade from
>plywood, since it will then need a big wingnut to hold it down, besides
>being flimsy in this thickness. Nevertheless, all suggestions are
>welcome.
>
>Jon Kolb
>
>
>
>
>Bolger rules!!!
>- no cursing, flaming, trolling, spamming, or flogging dead horses
>- stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
>- Pls add your comments at the TOP, SIGN your posts, and snip away
>- Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax: (978) 282-1349
>- Unsubscribe: bolger-unsubscribe@yahoogroups.com
>- Open discussion: bolger_coffee_lounge-subscribe@yahoogroups.com
>Yahoo! Groups Links
>
>
>
>
>
>
>
>
>
>
6061 T-6 is common and corrosion resistant. It is usually available locally
in cities but if not can be had fromhttp://www.onlinemetals.com12" * 24"
* .25" 6061 T-6 is $60.85 plus shipping.
Mark
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BALOGH SAIL DESIGNS (434) 735-8262
SAIL RIGS AND OUTRIGGERS
FOR KAYAKS AND CANOES
FOR RECREATION OR EXPEDITION
http://baloghsaildesigns.com
From: "adventures_in_astrophotography" <jon@...>
Reply-To:bolger@yahoogroups.com
Date: Fri, 12 Aug 2005 18:10:53 -0000
To:bolger@yahoogroups.com
Subject: [bolger] FastBrick Rudder Blade
The FastBrick building key calls for the 21" x 9" pivoting rudder blade
to be made from 1/4" aluminum plate "of a seawater resistant alloy like
Does anybody have a source for this material elsewhere, or other ideas
Jon Kolb
[Non-text portions of this message have been removed]
in cities but if not can be had fromhttp://www.onlinemetals.com12" * 24"
* .25" 6061 T-6 is $60.85 plus shipping.
Mark
--
BALOGH SAIL DESIGNS (434) 735-8262
SAIL RIGS AND OUTRIGGERS
FOR KAYAKS AND CANOES
FOR RECREATION OR EXPEDITION
http://baloghsaildesigns.com
From: "adventures_in_astrophotography" <jon@...>
Reply-To:bolger@yahoogroups.com
Date: Fri, 12 Aug 2005 18:10:53 -0000
To:bolger@yahoogroups.com
Subject: [bolger] FastBrick Rudder Blade
The FastBrick building key calls for the 21" x 9" pivoting rudder blade
to be made from 1/4" aluminum plate "of a seawater resistant alloy like
Does anybody have a source for this material elsewhere, or other ideas
Jon Kolb
[Non-text portions of this message have been removed]
I buy my aluminum plate on ebay
This piece might work for you...
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7538219901
This piece might work for you...
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=7538219901
> Does anybody have a source for this material elsewhere, or other ideas
--- Inbolger@yahoogroups.com, "adventures_in_astrophotography"
<jon@k...> wrote:
www.onlinemetals.com
That's where I get my stainless, and they do carry aluminum plate,
although not the 5086. You could call them and ask about the
properties of the grades they carry. They custom cut to size, for a
fee of course.
<jon@k...> wrote:
> The FastBrick building key calls for the 21" x 9" pivoting rudder bladeTry
> to be made from 1/4" aluminum plate "of a seawater resistant alloy like
> 5086." My local machine shop, friends who give me cut-rate deals on
> small parts for my astrophotography addiction, just quoted me $165 for
> the material alone! Ouch. No doubt part of the problem is due to my
> location in Colorado, far from any seawater.
>
> Does anybody have a source for this material elsewhere, or other ideas
> for a suitable substitute? I don't want to make the blade from
> plywood, since it will then need a big wingnut to hold it down, besides
> being flimsy in this thickness. Nevertheless, all suggestions are
> welcome.
>
> Jon Kolb
www.onlinemetals.com
That's where I get my stainless, and they do carry aluminum plate,
although not the 5086. You could call them and ask about the
properties of the grades they carry. They custom cut to size, for a
fee of course.
1/8" or 3/16" galvanised steel maybe?
Bill
Bill
----- Original Message -----
From: adventures_in_astrophotography
To:bolger@yahoogroups.com
Sent: Friday, August 12, 2005 7:10 PM
Subject: [bolger] FastBrick Rudder Blade
The FastBrick building key calls for the 21" x 9" pivoting rudder blade
to be made from 1/4" aluminum plate "of a seawater resistant alloy like
5086." My local machine shop, friends who give me cut-rate deals on
small parts for my astrophotography addiction, just quoted me $165 for
the material alone! Ouch. No doubt part of the problem is due to my
location in Colorado, far from any seawater.
Does anybody have a source for this material elsewhere, or other ideas
for a suitable substitute? I don't want to make the blade from
plywood, since it will then need a big wingnut to hold it down, besides
being flimsy in this thickness. Nevertheless, all suggestions are
welcome.
Jon Kolb
Bolger rules!!!
- no cursing, flaming, trolling, spamming, or flogging dead horses
- stay on topic, stay on thread, punctuate, no 'Ed, thanks, Fred' posts
- Pls add your comments at the TOP, SIGN your posts, and snip away
- Plans: Mr. Philip C. Bolger, P.O. Box 1209, Gloucester, MA, 01930, Fax: (978) 282-1349
- Unsubscribe:bolger-unsubscribe@yahoogroups.com
- Open discussion:bolger_coffee_lounge-subscribe@yahoogroups.com
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The FastBrick building key calls for the 21" x 9" pivoting rudder blade
to be made from 1/4" aluminum plate "of a seawater resistant alloy like
5086." My local machine shop, friends who give me cut-rate deals on
small parts for my astrophotography addiction, just quoted me $165 for
the material alone! Ouch. No doubt part of the problem is due to my
location in Colorado, far from any seawater.
Does anybody have a source for this material elsewhere, or other ideas
for a suitable substitute? I don't want to make the blade from
plywood, since it will then need a big wingnut to hold it down, besides
being flimsy in this thickness. Nevertheless, all suggestions are
welcome.
Jon Kolb
to be made from 1/4" aluminum plate "of a seawater resistant alloy like
5086." My local machine shop, friends who give me cut-rate deals on
small parts for my astrophotography addiction, just quoted me $165 for
the material alone! Ouch. No doubt part of the problem is due to my
location in Colorado, far from any seawater.
Does anybody have a source for this material elsewhere, or other ideas
for a suitable substitute? I don't want to make the blade from
plywood, since it will then need a big wingnut to hold it down, besides
being flimsy in this thickness. Nevertheless, all suggestions are
welcome.
Jon Kolb