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Go Back   SailNet Community > On Board > Gear & Maintenance > Galvanized Anchor Refinishing
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Thread: Galvanized Anchor Refinishing Reply to Thread
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Topic Review (Newest First)
10-21-2011 06:55 PM
skygazer
Quote:
Originally Posted by JimsCAL View Post
Three year old thread. I think the Baha cruise/race is over.
Quote:
Originally Posted by JimsCAL View Post
OK. But better to start a new thread focused on the question at hand rather than force us to read old an old thread that may gone off topic a bit (like this one did).
I suppose it depends on whether you consider the thread to be about a particular race, which seems a side issue, or about hot dipping rusty anchors. I read the thread with interest, I have 4 or 5 anchors and chains that are rusty. I do agree anchor size is off topic, but that is not related to the newer posts.

I find it educational that hot dipping zinc is charged by the pound. Chain has a much greater surface area to cover per pound than an anchor, will use a lot more material and it will be harder to remove excess.

Given the poundage, I could buy a lot of cans of cold galvanizing compound and recoat the anchors many times for the price. Looking at it as sacrificial zinc, I'm not sure which way is better. The chain, I'd let them do it!


Here is the original title:

Galvanized Anchor Refinishing

Here is the original post:
Quote:
Originally Posted by Vitesse473 View Post
Is it possible to grind a galvanized anchor down to its bare metal and refinish it? If so, what do you refinish it with to protect from rust?
I also found this to be educational:

Quote:
Originally Posted by pistoljr View Post
Thermal spray with Zinc/Alum is a better process for refinishing an anchor. It is sand blasted to remove rust and then sprayed with with hot liquid Zn/Al
using a metalizing gun. The coating will last longer than galvanizing, and longer than a new anchor.

Regalvanizing uses a hot dip process that can melt the lead out of some anchors, not so with Metalizing now referred to as Thermal Spray.

Thermal Spray doesn't require minimum weight as most galvanizing shops do.

Chuck
Both of these recent educational posts are on topic. These new posts are the ones you seem to object to.

I accept that there may even be rules requiring new posts, but I fail to see the logic of spreading the useful information all over the place. I applaud the people who put the pricing and alternatives in a thread about re-galvanizing anchors and chain. Very helpful.
10-21-2011 02:49 PM
JimsCAL
Quote:
Originally Posted by skygazer View Post
Anchors and galvanizing are still of current interest.
OK. But better to start a new thread focused on the question at hand rather than force us to read old an old thread that may gone off topic a bit (like this one did).
10-21-2011 10:24 AM
skygazer
Quote:
Originally Posted by JimsCAL View Post
Three year old thread. I think the Baha cruise/race is over.
Anchors and galvanizing are still of current interest.
10-21-2011 09:52 AM
JimsCAL Three year old thread. I think the Baha cruise/race is over.
10-20-2011 09:46 PM
GaryHLucas I got my anchor re-galvanized for free a while back. That's because everything I design at my job gets galvanized! So they threw my anchor on the truck and I had it back in 3 days. My anchor was REALLY rusty. I beat the heavy rust off with the claw from a claw hammer. When they galvanize they first dip it in hot caustic, which strips all the oil, grease and organics like mold and slime. Then it goes in hot acid, which removes all the rust and prepares the surface. Finally it gets dipped in 800 degree molten zinc. IT came out very nice, I expect to use it for another 15 years or so.
You usually pay by the pound maybe 30 to 50 cents a pound, but most galvanizers havea minimum job that is quite a bit more. Find a user like us and get them to throw your anchor in with their load, and buy the guy a six pack.

Gary H. Lucas
10-20-2011 05:03 PM
pistoljr
Re-galvanize anchor versus Metalizing

Quote:
Originally Posted by Vitesse473 View Post
Is it possible to grind a galvanized anchor down to its bare metal and refinish it? If so, what do you refinish it with to protect from rust?
Thermal spray with Zinc/Alum is a better process for refinishing an anchor. It is sand blasted to remove rust and then sprayed with with hot liquid Zn/Al
using a metalizing gun. The coating will last longer than galvanizing, and longer than a new anchor.

Regalvanizing uses a hot dip process that can melt the lead out of some anchors, not so with Metalizing now refered to as Thermal Spray.

Thermal Spray doesn't require minimum weight as most galvanizing shops do.

Chuck
06-27-2008 01:29 PM
jrd22 Re-galvanizing costs here in Seattle area are 40-60 cents/lb. At least they were two months ago when I had the chain done. If having a chain done you need to find a galvanizer that has a centrifuge, and the cost will be at the upper end. Very common to have anchors re-done around here. PM me for names if interested.

I want to put a Rocna 33 on the new boat but I find the shank is much longer than the 45 CQR that was on it and I don't have enough room between the roller and the chain stopper. Guess I'll have to modify the roller somehow.

John
06-27-2008 01:07 PM
camaraderie Vitesse...everhything is comparative...alongside my old Irwin44CC you would be low profile!!
06-27-2008 10:33 AM
Vitesse473 [QUOTE=camaraderie;334212]Vitesse...the Bene's are fairly light and low profileQUOTE]


Light, yes, low profile, no. the 473's have very high freeboard. Higher than any other Bene I've ever seen. That's what gives it the go fast sleek look over the 46 of old.

I'll do some more research on both the Rocna and the Delta, and will look for some options on Craig's list and elsewhere. 55lbs sounds more palatable than 73. With all that chain rode, there is a lot of weight on the bow already (though I am not one to skimp on such a critical item).
06-27-2008 09:26 AM
camaraderie Vitesse...the Bene's are fairly light and low profile. I would think the 55 will be plenty for your plans...especially given the increased holding power of the new designs. I used a 55 Delta cruising on a 25k lb. high windage 44 footer in all kinds of conditions and the new designs are an improvement over the Delta I think.
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