Search found 2246 matches

by Chaps
Sun Jan 30, 2022 6:31 pm
Forum: Alloy Boat Forum
Topic: Bottom Paint flaking/hull pitting
Replies: 13
Views: 4891

Re: Bottom Paint flaking/hull pitting

Good analysis on the potential wiring issues there Kevin, been learning from your posts for years. On the paint problems it looks suspiciously like some low level positive DC is present in your hull, could be something hard to measure, less than a volt of +dc can raise hell. Anyway, what happens is ...
by Chaps
Wed Jan 12, 2022 11:55 pm
Forum: Alloy Boat Forum
Topic: 17' Valco Bayrunner leak problem
Replies: 6
Views: 2935

Re: 17' Valco Bayrunner leak problem

Without physically inspecting the boat anyone including myself would be guessing as to where all your issues are but suffice to say that a 30 year old aluminum thin hulled boat is likely suffering from multiple age, stress and corrosion related problems (just like us!). The old saying a "death ...
by Chaps
Sat Jan 08, 2022 10:37 pm
Forum: Alloy Boat Forum
Topic: Corrosion on kicker anode only
Replies: 5
Views: 2036

Re: Corrosion on kicker anode only

Your kicker anode is not welded, those are your hull anodes that are welded. All outboards, even big Mercury's with stainless props, are factory equipped with aluminum anodes. If you see an anode that is corroding that means it is working as designed, it is protecting the parts that it is attached t...
by Chaps
Sun Dec 19, 2021 12:40 am
Forum: Manufacturers
Topic: Stabicraft moving to Port Angeles.
Replies: 1
Views: 3543

Re: Stabicraft moving to Port Angeles.

Pretty neat boats and the new ones "got the look"
by Chaps
Sun Dec 19, 2021 12:37 am
Forum: Welcome New Members
Topic: MCampbellGA - Introduction!
Replies: 2
Views: 3624

Re: MCampbellGA - Introduction!

Nice approach! Good move!
by Chaps
Wed Oct 27, 2021 9:18 pm
Forum: Alloy Shop Talk
Topic: Etching in video example
Replies: 18
Views: 9998

Re: Etching in video example

Hatcher, thanks for the pics. It appears that your issues primarily require paint removal which I can surely do with traditional sand blasting but the outcome of that process would result in an abraded profile on the underlying metal that realistically would then need to be repainted, it would be to...
by Chaps
Wed Oct 27, 2021 1:06 am
Forum: Alloy Shop Talk
Topic: Etching in video example
Replies: 18
Views: 9998

Re: Etching in video example

Hunter, yeah, cosmetic rehabbing of boats like yours is where I'm going with this idea & process. If you could email me photos of the areas on your boat that need attention it would help me determine if my system (at its current level of refinement) might be suited to improving some of those iss...
by Chaps
Mon Oct 25, 2021 11:59 pm
Forum: Alloy Shop Talk
Topic: Etching in video example
Replies: 18
Views: 9998

Re: Etching in video example

OK, duly noted Kevin. Next chance I get to set the system up I'm going to apply the treatment to the sides of my old LaConner to see how it will clean up a crusty, oxidized and beat up "mature" hull.
by Chaps
Wed Oct 20, 2021 11:05 pm
Forum: Alloy Shop Talk
Topic: Etching in video example
Replies: 18
Views: 9998

Re: Etching in video example

Thanks Kevin, it is a white metal blast in a sense except that instead of leaving the surface profiled (or etched) as you would typically want for applying a coating the objective here was to leave a smooth, stripped surface that was ready for long term use as-is without further treatment. It's sort...
by Chaps
Tue Oct 19, 2021 12:08 am
Forum: Alloy Shop Talk
Topic: Etching in video example
Replies: 18
Views: 9998

Re: Etching in video example

I've been developing a dry blast process that strips the mill scale and generates a sealed texture on bare alloy. . I feel its advantage over acid wash is it peens the surface which closes up the pores in the metal which greatly reduces and evens out oxidation and it cuts down on staining and grime ...
by Chaps
Sun Oct 17, 2021 12:22 am
Forum: Alloy Shop Talk
Topic: Etching in video example
Replies: 18
Views: 9998

Re: Etching in video example

Don't see a link to the video in your post Kevin
by Chaps
Sun Oct 03, 2021 1:51 am
Forum: Your Alloy Boat
Topic: pacific assassin build
Replies: 95
Views: 32379

Re: pacific assassin build

Great boats, congratulations! However, we just bottom painted a brand new 26 Pacific and to my surprise they are still putting zinc hull anodes on at the factory. We swapped it out to an aluminum type for two reasons . . . First, zinc isn't quite reactive enough to properly protect aluminum hulls . ...
by Chaps
Sun Oct 03, 2021 12:50 am
Forum: Share your Projects and Creations
Topic: Elite 9m plumb bow new build
Replies: 11
Views: 7851

Re: Elite 9m plumb bow new build

That's a beaut . . . plumb stem gives it a classic look . . . though might it be a rather blunt instrument at speed in typical offshore conditions?
by Chaps
Sat Sep 18, 2021 8:47 am
Forum: Alloy Boat Forum
Topic: Blowing out windshields???
Replies: 9
Views: 3907

Re: Blowing out windshields???

You can't be serious, what is the point in going out in those kind of conditions?
by Chaps
Wed Sep 15, 2021 12:39 am
Forum: Alloy Boat Forum
Topic: Trim Tabs or pods or neither.
Replies: 6
Views: 3851

Re: Trim Tabs or pods or neither.

80lbs of lead weight up in the bow would make a difference and be easy to do
by Chaps
Tue Aug 17, 2021 12:08 am
Forum: Alloy Shop Talk
Topic: Line-X for boat hull?
Replies: 5
Views: 9238

Re: Line-X for boat hull?

Bedliner is not a particularly good choice, its likely not submersion rated (will eventually lose adhesion, particularly on aluminum). Epoxy paint in it's various forms would work better as an underwater capable coating. It is tough, would seal up the metal well and you could smoothly apply it yours...
by Chaps
Fri Aug 13, 2021 11:11 pm
Forum: Alloy Boat Forum
Topic: Howdy - new (old) 17 ft Bayrunner
Replies: 3
Views: 4715

Re: Howdy - new (old) 17 ft Bayrunner

excitement!
by Chaps
Thu Aug 12, 2021 10:15 pm
Forum: Alloy Boat Forum
Topic: Duckworth 30xl build
Replies: 5
Views: 5762

Re: Duckworth 30xl build

Paint down to the top of the lower rail then bottom paint below that. Perhaps forego the upper rail, don't really need it and would simplify the rework
IMG_2898.jpeg
IMG_2898.jpeg (125.01 KiB) Viewed 5751 times
by Chaps
Sun Aug 08, 2021 10:03 am
Forum: Alloy Boat Forum
Topic: Hull Corrosion
Replies: 11
Views: 8567

Re: Hull Corrosion

Thanks for the kind words Kevin, sorry Brent I have not checked in here for awhile. Your hull issues could have one of several origins as Kevin has opined but to me at first blush it closely resembles what happens to an aluminum boat that has been coated with copper bottom paint. Whatever the cause ...
by Chaps
Fri Jun 04, 2021 10:32 pm
Forum: Share your Projects and Creations
Topic: 1996 tadpole repair
Replies: 3
Views: 7182

Re: 1996 tadpole repair

boat looks like it has been sitting in some low ph water
by Chaps
Tue May 25, 2021 11:01 pm
Forum: Aluminum Boats For Sale
Topic: 2012 Metal Shark Resolute 20 For Sale
Replies: 5
Views: 9375

Re: 2012 Metal Shark Resolute 20 For Sale

That boat would sell in about 3 seconds if it was in the PacNW, neat machine
by Chaps
Mon Apr 05, 2021 10:57 pm
Forum: Alloy Boat Forum
Topic: bottom paint
Replies: 4
Views: 6355

Re: bottom paint

significantly better performance
by Chaps
Sun Apr 04, 2021 2:22 am
Forum: Alloy Boat Forum
Topic: rub rail corrosion/pitting
Replies: 8
Views: 7157

Re: rub rail corrosion/pitting

Good info above. Its not a rare problem. One thing that I have repeatedly heard over the years is that black D rubber has chemical components that will galvanically react with aluminum particularly if the interface between the two is kept wet with sea water, likely culprit is the carbon black in the...
by Chaps
Fri Apr 02, 2021 12:19 am
Forum: Alloy Boat Forum
Topic: bottom paint
Replies: 4
Views: 6355

Re: bottom paint

I've been testing a bunch of aluminum friendly bottom paints last few years, some that were good in the past are now not so great. A fairly new paint that did well in my full season test last year is Seahawk Colorkote.