Search found 1581 matches

by kmorin
Sat Jan 16, 2021 2:33 pm
Forum: Alloy Shop Talk
Topic: Vancouver Island Skiff build
Replies: 2
Views: 44

Re: Vancouver Island Skiff build

stormsails13, I'd say that the larger the sheet you can purchase the more 'effective' and 'efficient' the build because you have the same final wt. of material to purchase and less cutting, fitting and welding? Nesting your shapes on paper will show you how to use the off-cuts for transom, decking, ...
by kmorin
Wed Jan 13, 2021 2:06 pm
Forum: Welcome New Members
Topic: "27 Lifeboat from Denmark
Replies: 7
Views: 386

Re: "27 Lifeboat from Denmark

mads, always enjoy the design part of discussions here on the AAB.com Forum so its my pleasure to discuss your project's future hull modifications. When you say "hollow 1/3" buttocks", do you mean concave? yes, I saw a set of lines (heavier than the rest of the lines) that were 'turne...
by kmorin
Sun Jan 10, 2021 3:28 pm
Forum: Welcome New Members
Topic: "27 Lifeboat from Denmark
Replies: 7
Views: 386

Re: "27 Lifeboat from Denmark

Mads, in the early 1900's there were a large number of planked cellulose sail boats, double ended hulls like yours, built in San Francisco for a shore side salmon net fishery in Bristol Bay, Alaska. These boats were converted from sail only to various power installations in the 40's and onward until...
by kmorin
Sat Jan 09, 2021 12:26 am
Forum: Alloy Boat Forum
Topic: Annual Rant by K Morin
Replies: 9
Views: 691

Re: Annual Rant by K Morin

Craigb, at the top of the Homepage is a big blue banner, just below that is a light blue one... and in the third icon from the left is a heart and Donate button. That's a start. Also, if you'd like to send a check to welder? instead of using the online contribution methods? Then, the address is; Alu...
by kmorin
Thu Jan 07, 2021 11:15 pm
Forum: Welcome New Members
Topic: "27 Lifeboat from Denmark
Replies: 7
Views: 386

Re: "27 Lifeboat from Denmark

Really interesting build commentary in the various photos of the round bilge, double ended hull form. My primary concern for corrosion would in the the buttock line of the air voids (seats) where they met the hull plate. This would be the low point in a 'sealed' cell.... with HATCHES!!!! so if there...
by kmorin
Sun Jan 03, 2021 9:52 pm
Forum: Alloy Boat Forum
Topic: Crevice Corrosion Repair Procedure
Replies: 9
Views: 453

Re: Crevice Corrosion Repair Procedure

Cory, PM AAB.com Forum coating expert (member name) Chaps... he's bound to know what, where, how much and if anything is available in the Puget Sound basin? Chaps is THE go-to expert (here) for all things to do with working on welded aluminum hull coatings.

Cheers,
Kevin Morin
by kmorin
Sun Jan 03, 2021 2:12 pm
Forum: Alloy Boat Forum
Topic: Crevice Corrosion Repair Procedure
Replies: 9
Views: 453

Re: Crevice Corrosion Repair Procedure

Cory, here's some info about Zep http://images.zep.com/zepcorporate/tds/psr_1063.pdf its used by tank truck cleaners to get aluminum cleaned- not shined! So that is a place where the product might be available in your area? As to SS fasteners tapped- especially self tapped screws- that is almost ass...
by kmorin
Sun Jan 03, 2021 12:15 am
Forum: Alloy Boat Forum
Topic: Crevice Corrosion Repair Procedure
Replies: 9
Views: 453

Re: Crevice Corrosion Repair Procedure

ccaywood, lots of mid market mfg.s of welded boats still don't think leaving mill scale on their metal boats - then painting- is a key to insuring their boats begin to corrode in a couple years? Even when the surface prep is done correctly, not shown here, holes are often too small for a paint film ...
by kmorin
Sat Dec 26, 2020 10:24 pm
Forum: Alloy Boat Forum
Topic: Annual Rant by K Morin
Replies: 9
Views: 691

Re: Annual Rant by K Morin

Craig, there's no fixed fee, its whatever you'd like to contribute? If you subscribe to a good quality magazine? What do you spend a year? Or if you're at a pay site for some other special interest... what's that like for cost? There's not a cost structure, there's just a great service and your reac...
by kmorin
Sat Dec 26, 2020 6:27 pm
Forum: Alloy Boat Forum
Topic: Hello.. new member and need assistance
Replies: 26
Views: 4082

Re: Hello.. new member and need assistance

Tom, while i can say it is never acceptable to have loose steel/iron/ferrous metals in the (wet) bilge of an aluminum boat.... I don't think this is sole source solution to the soup in your bilges that were corrosive? Notice the ends are all that seem (as shown?) to be rusted, so the wires seem larg...
by kmorin
Thu Dec 24, 2020 6:46 pm
Forum: Alloy Boat Forum
Topic: Annual Rant by K Morin
Replies: 9
Views: 691

Annual Rant by K Morin

It's that time of year for all regular posters and readers, lurkers (and trolls too) for me to wish you all to have a Merry Christmas and Happy New Year wish from the ' Site's Mill Scale gnat-Zee ' and an encouragement to consider a donation for welder 's generosity and willingness to host our discu...
by kmorin
Sat Dec 19, 2020 11:06 am
Forum: Alloy Boat Forum
Topic: 10 Days in the salt
Replies: 5
Views: 734

Re: 10 Days in the salt

G & R, don't need the weld passivation kit to dip and rinse the SS bolts!! Just the acid gel and someplace to let them dry.

Welds have a separate level of iron in the surface oxides so.... the acid gets a little 'jump start'.

Cheers,
Kevin Morin
Kenai, AK
by kmorin
Fri Dec 18, 2020 6:20 pm
Forum: Alloy Boat Forum
Topic: 10 Days in the salt
Replies: 5
Views: 734

Re: 10 Days in the salt

Hello..... i am awaiting aluminum fasteners,which I will use instead of stainless. Browndog, I'd caution you on that decision to use aluminum threaded fasteners. Aluminum threads are notorious for galling, and ruining the bolt and nut- and then having to be cut off (out) to replace. Insulated SS, o...
by kmorin
Wed Dec 09, 2020 10:48 am
Forum: Alloy Boat Forum
Topic: Hello.. new member and need assistance
Replies: 26
Views: 4082

Re: Hello.. new member and need assistance

Tom, no body can tell you exactly how long it would take to happen but water was a contributing factor. So as along as there was bilge water that wasn't drained/pumped/cleaned out the active agent was working. Next is that pure water, even pure salt water was not the agent or cause. The mixture of v...
by kmorin
Tue Dec 08, 2020 5:56 pm
Forum: Alloy Boat Forum
Topic: Hello.. new member and need assistance
Replies: 26
Views: 4082

Re: Hello.. new member and need assistance

Tom, couple of remarks about your post. First, if you're doing the work by yourself, none is hired? Then the word "cost" becomes relative. For example if you're working at a job that you quit to work on the boat... those are 'costs' in that you're not getting your hourly as you've assigned...
by kmorin
Tue Dec 08, 2020 10:52 am
Forum: Alloy Boat Forum
Topic: Hello.. new member and need assistance
Replies: 26
Views: 4082

Re: Hello.. new member and need assistance

tsgarvey, can't tell if the conditions shown in the after bilge are forward and over the keel area also, but there are lots of holes already. Will you be wet pressure washing these areas? That will likely show where the other holes are that aren't evident yet? I"d think that even water washing ...
by kmorin
Fri Dec 04, 2020 11:12 pm
Forum: Alloy Shop Talk
Topic: Anyone ever built a hull bottom to change the shape of an existing hull?
Replies: 12
Views: 2452

Re: Anyone ever built a hull bottom to change the shape of an existing hull?

Tfitz, let's just build one from clean plate and quit fiddling someone else's starting point? I'm in, for a full design and build, you do the work -( I may have to tune up your welding?) I'm too old to be more than the guide, but don't torture your little skiff any more! Let her go to someone who'll...
by kmorin
Fri Dec 04, 2020 1:10 pm
Forum: Alloy Boat Forum
Topic: Aluminum Watercraft Project- Sealing Compartments
Replies: 10
Views: 1513

Re: Aluminum Watercraft Project- Sealing Compartments

PX, All these books do have some good information; however, reading them does imply you should plan to build a 'plain jane' skiff before laying the keel(s) on a 30' offshore design!!! The first dozen or so skiffs, like the first few power boats over 28' are really " educational " for the n...
by kmorin
Wed Dec 02, 2020 2:21 pm
Forum: Alloy Boat Forum
Topic: Aluminum Watercraft Project- Sealing Compartments
Replies: 10
Views: 1513

Re: Aluminum Watercraft Project- Sealing Compartments

PX, Kevin is fine! as the saying goes "Mr. Morin was my father". Anyway, glad you got some additional perspective from my remarks. I'd like to reflect a bit on using applied elastomeric products to a hull and contrast that to aluminum aircraft. I'm sure you've noticed the leading welded bo...
by kmorin
Tue Dec 01, 2020 4:14 pm
Forum: Alloy Boat Forum
Topic: Aluminum Watercraft Project- Sealing Compartments
Replies: 10
Views: 1513

Re: Aluminum Watercraft Project- Sealing Compartments

PX, after posting the bulkhead remarks I'll follow with the actually correct method of installing ring frames/transverse frames/partial bulkheads that won't be welded continuously. First remark is; what do your plans call for in regard fully welded xverse bulkheads? I'd follow the plans? Now to xver...
by kmorin
Tue Dec 01, 2020 3:49 pm
Forum: Alloy Boat Forum
Topic: Aluminum Watercraft Project- Sealing Compartments
Replies: 10
Views: 1513

Re: Aluminum Watercraft Project- Sealing Compartments

PX, I'll offer my experience and make suggestions about the question of fully sealed xverse welds on water tight bulkheads. First the short answer is: weld them solid on one side (AT LEAST) and back stitch the other; at a minimum. Long answer is: There are several considerations that have been seen ...
by kmorin
Tue Nov 24, 2020 2:09 pm
Forum: Alloy Shop Talk
Topic: Anyone ever built a hull bottom to change the shape of an existing hull?
Replies: 12
Views: 2452

Re: Anyone ever built a hull bottom to change the shape of an existing hull?

Sobie, one other factor to consider, hope this will make sense in text? The forefoot, curved portion where the keel curves up to the bow stem, is the topic in this post. This curve is long, slowly swept up and therefore, in the current hull's lines creates a VERY MODEST V or small deadrise in the cu...
by kmorin
Tue Nov 24, 2020 2:36 am
Forum: Alloy Shop Talk
Topic: Anyone ever built a hull bottom to change the shape of an existing hull?
Replies: 12
Views: 2452

Re: Anyone ever built a hull bottom to change the shape of an existing hull?

Sobie, in regards the fuel, you can find some tank tutorials I've done here and on Glen-L to build metal tanks to stand along the topsides above decks, under the gunwales and will move your CG (not CoB) a bit forward when full. A couple of 20 gal. tanks would be appropriate and trim down by the bow ...
by kmorin
Mon Nov 23, 2020 1:41 pm
Forum: Alloy Shop Talk
Topic: Anyone ever built a hull bottom to change the shape of an existing hull?
Replies: 12
Views: 2452

Re: Anyone ever built a hull bottom to change the shape of an existing hull?

Sobie, I've changed the deadrise of a 23' skiff (not landing craft) before and it was very successful. One thing to note is there's no need to cut off or out the existing bottom, just add the new one and perhaps relocated the tanks? Move them forward by the sounds of her pitch by the bow? As to the ...
by kmorin
Thu Nov 19, 2020 12:41 pm
Forum: Alloy Boat Forum
Topic: Hello.. new member and need assistance
Replies: 26
Views: 4082

Re: Hello.. new member and need assistance

tsgarvey, I'll expand on my logic a bit? If you'd known the boat's true interior condition- prior to buying it- would you buy it now? Probably not? Why is that? Well it seems to me that you bought it thinking it was still fully functional as a boat- meaning it would hold the water out! However, upon...