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Go Back   SailNet Community > On Board > Gear & Maintenance
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  #1  
Old 10-10-2007
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Soda Blasting

Longtime reader, first-time poster. Anybody out there had the bottom of their boat soda blasted to remove old layers of bottom paint? If so, what were the results and how much did it cost? I understand that the process, which utilizes baking soda instead of sand, removes the paint without any damage to the gelcoat. Thanks in advance!
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Old 10-10-2007
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SanderO is an unknown quantity at this point
I didn't but there were a few in the yard where I did Spring prep. The results looked good. I was thinking of it myself but the mechanic needs to line up a few yachts in order to get his rig down there.

I might do a chem peel. I think I can deal with that myself and it would be less expensive.

I'd like to hear from people who had it done... and how much it costs?

jef
sv shiva
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Old 10-10-2007
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never had a boat done. i am a fire restoration contractor and have used soda blasting many times in the past. WHAT A MESS. people will say that "it's only baking soda" but you will definitely cover every car, boat, house ....... for blocks around. almost received a county citation one time for air pollution. i must say that it is a very effective process for smoke removal on surfaces that would otherwise be damaged by sand but......
most people have now gone to ice blasting which utilizes dry ice in lieu of baking soda. results are very good and by products of the process are zero.
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Old 10-10-2007
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Dry ice? CO2? Global warming? Wadda we steppin' in here?
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just trying to make more wide open sailing areas. if we could just get rid of that polar ice cap.
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Oh, well ok ...
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You might look at Interlux products for chemical strip. I used it last year and found it to be the most cost effective (DIY) and did a very good job removing mutiple coats of bottom paint and not adversly affecting the existing barrier coat.

Cheers
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Here is an informative link http://www.sodablastboats.com/index1.html

I believe the marina near me tents and collects all the debris for proper disposal. Results look great. I don't know the cost.
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Old 10-10-2007
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sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
I had the bottom of my boat sodablasted this past spring and am very happy with the results. Saved me a lot of work doing it that way. The boat is a 28' trimaran and it cost about $900 to have all three hulls done.

Where are you located? If you're in New England, I can make a couple of recommendations for you.
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bead blasting

I had a 25' boat bead blasted about 10 yrs ago for about $700. Figure inflation yourself.

The beads are a plastic composition whose hardness is between that of gelcoat and bottom paint. The results were very good, but not perfect. I had to finish the last 1% or so with an orbital sander. Still, a lot less effort than doing the whole thing.

The residue was captured in a tarp formed into a tent. There was no mess in the boatyard afterward. The contractor wanted the beads anyway -- he claimed they are not cheap.
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