Search found 14 matches

by AK7Buck
Wed May 23, 2018 9:05 am
Forum: Alloy Boat Forum
Topic: Hull Pitting / Flowering
Replies: 9
Views: 8849

Re: Hull Pitting / Flowering

Thanks Chaps - and outstanding work on the hull painting!
by AK7Buck
Tue May 22, 2018 12:04 am
Forum: Alloy Boat Forum
Topic: Hull Pitting / Flowering
Replies: 9
Views: 8849

Re: Hull Pitting / Flowering

Thanks, your comments / input is much appreciated. * Trim tabs have Tef Gel applied between tabs and hull. I also have zinc anodes on the trim tabs (see picture). * I sanded last Sept (to a shiny aluminum) but the flowering came back after sitting all winter outside. Today, I re-sanded a small secti...
by AK7Buck
Sun May 20, 2018 12:09 pm
Forum: Alloy Boat Forum
Topic: Hull Pitting / Flowering
Replies: 9
Views: 8849

Re: Hull Pitting / Flowering

To add:
1) There is no ground from the negative terminal on the batteries to the hull of the boat. I keep hearing conflicting information on this - some say absolutely not, other say absolutely yes.

2) I only charge the batteries when the boat is on the trailer and do not use a galvonic isolator.
by AK7Buck
Sun May 20, 2018 11:12 am
Forum: Alloy Boat Forum
Topic: Hull Pitting / Flowering
Replies: 9
Views: 8849

Re: Hull Pitting / Flowering

Thank you for your responses. The pitting is both above and below the water line. I have applied 2 applications of zep, once a few years ago (but did not sand) and then again last Fall after I sanded. I don't think there is any question that I did not sand enough - no way did my hull look as clean a...
by AK7Buck
Wed May 16, 2018 11:17 pm
Forum: Alloy Boat Forum
Topic: Hull Pitting / Flowering
Replies: 9
Views: 8849

Hull Pitting / Flowering

Need Assistance on a 2525 Kingfisher. Summary: - Boat has always been stored at my home when not in use; limited use for a 10 year old boat (400 hrs on motor). - Have extensive flowering and pitting on the bottom outside hull of the boat; no pitting on inside hull. Last Fall, I used scotchbrite pads...
by AK7Buck
Wed Nov 04, 2015 11:37 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Re: Acid Etch with Zep a Lume

Yes, exactly. I have gone to 80 grit and finally see ‘tracks’ of the sanding pad on the metal, and it is working. Ideally, not as fast as I would like so I thought about moving down to a lower grit for certain areas. The bad areas are on the bottom of the lockers; the sides are not bad at all. I ver...
by AK7Buck
Mon Nov 02, 2015 11:48 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Re: Acid Etch with Zep a Lume

Kevin, Thanks for the follow-up! Yes, I started sanding the fish lockers initially with course scotchbrite, then with sandpaper down to 80 grain, but still have a fair amount of sanding to go. I may need to go lower than 80 in some areas - overall however, it's working. My goal is to get the sanding...
by AK7Buck
Sun Sep 27, 2015 11:29 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Re: Acid Etch with Zep a Lume

Thanks Kevin, I'll give it a shot. Appreciate your help. In looking at my boat further, I have a couple of very tiny pin holes under the water line towards the bow which I believe is due to poor ground from the motor being isolated from the hull. I will be taking your advice to create a ground to th...
by AK7Buck
Sun Sep 27, 2015 9:21 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Re: Acid Etch with Zep a Lume

I like your approach better - and agree, no need for a fine polish in this area. Any advantages of using wet vs. dry sandpaper?
by AK7Buck
Sun Sep 27, 2015 3:50 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Re: Acid Etch with Zep a Lume

Thanks for your responses. The pitting, although numerous, are not deep. I think I'll start with a DA sander at 500 grit and work my way up, ending at 1500, followed by buffing with scotch brite. I will plan to do the entire locker. Once done, I'll briefly re-zep and then let oxidize and hopefully s...
by AK7Buck
Sat Sep 26, 2015 2:17 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Re: Acid Etch with Zep a Lume

The Zep a Lume worked well in most areas of the boat, but not in the fish locker. This area is generally never dry. I acid etched this area several times with very high concentrations of zep. I even pre-heated the locker and still no further removal. I think the best way forward is to start sanding ...
by AK7Buck
Sun Sep 20, 2015 12:29 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Re: Acid Etch with Zep a Lume

Chaps - I was wondering about that while inspecting my fish locker - how much of the grime will the Zep remove. I will clean - I don't want to do this process once let alone twice. Thanks.
by AK7Buck
Sat Sep 19, 2015 6:47 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Re: Acid Etch with Zep a Lume

Kevin, Many thanks for the feedback! I have reviewed the MSDS in detail and have put together the following: 1) Goggles; 2) Plastic face mask; 3) Half face aspirator with 3M P100 60923 Organic Vapor/Acid Gas Cartridge; 4) Blue nitrile inner gloves; 5) Neoprene outer gloves to elbows; 6) Rubber boots...
by AK7Buck
Sat Sep 19, 2015 2:56 pm
Forum: Alloy Boat Forum
Topic: Acid Etch with Zep a Lume
Replies: 18
Views: 17842

Acid Etch with Zep a Lume

I also have white flowering on my boat - identical with the previous posts. I have used NAPA's aluminum brightener - it works well but only after repeated applications. I just purchased a gallon of Zep a Lume which has a considerably stronger concentration to remove mill scale after one application,...