Search found 732 matches

by Kevin Morin
Sat Apr 20, 2019 10:36 am
Forum: Metal
Topic: So, You want to buy a welding machine...?
Replies: 54
Views: 40746

Re: So, You want to buy a welding machine...?

Another aspect of aluminum welding that should be 'bumped' up here is welding 5000 or 6000 series aluminum with 4043 or even 4943 alloy filler. the welds will 'stick' but when they are bent backwards/break bend tested.... 4043 shows itself to be very very weak overall. However, many welders prefer t...
by Kevin Morin
Thu Apr 18, 2019 6:22 pm
Forum: Metal
Topic: So, You want to buy a welding machine...?
Replies: 54
Views: 40746

Re: So, You want to buy a welding machine...?

I regularly use expensive "professional grade" welding systems for both MIG and TIG. So I don't see much of the lower amperage systems' products unless I discuss them with others who own or have access to those types of systems. This post is about some "facts of life" having to do with a small "spoo...
by Kevin Morin
Mon Apr 15, 2019 10:33 am
Forum: Metal
Topic: Metal Marine Tanks (mainly welded aluminum)
Replies: 78
Views: 35712

Re: Metal Marine Tanks (mainly welded aluminum)

After some conversation about tanks' construction I thought I'd mention some links to some of the parts available online? I typically use aluminum pipe couplers, cut in half on the band saw as my tank wall weld in fittings. But... they're not for everyone! In the following links there are flange typ...
by Kevin Morin
Sat Apr 06, 2019 5:31 pm
Forum: Metal
Topic: 25' Skiff Build
Replies: 113
Views: 13732

Re: 25' Skiff Build

Yofish have a safe and relaxing trip to see your father-in-law and family! Of course I can't let it go! The Forum readers could use some follow up, and look forward to your return and a few posts before the season in the K.Bay opens up and you get busy enjoying the Lord's prettiest landscape anywher...
by Kevin Morin
Fri Apr 05, 2019 8:41 pm
Forum: Metal
Topic: 25' Skiff Build
Replies: 113
Views: 13732

Re: 25' Skiff Build

Forum readers who're reading Yofish's build thread might be interested in some detail notes about this thread and welded skiff metal boats in general. First and foremost is this skiff wasn't built off full gunwale-to-gunwale transverse frames OR with a set of station molds inverted on which to form ...
by Kevin Morin
Thu Apr 04, 2019 6:19 pm
Forum: Metal
Topic: 25' Skiff Build
Replies: 113
Views: 13732

Re: 25' Skiff Build

Yofish, I know the skipper was a giant, and stand up helms are a mutual design headache when you're accommodating the owner's height, I'm current working with a 6-5" or 6-6" owner but at least he's building his own boat! Given the 'well deck' in the house- domino effect to the bottom being hogged du...
by Kevin Morin
Thu Mar 28, 2019 9:55 am
Forum: Metal
Topic: 25' Skiff Build
Replies: 113
Views: 13732

Re: 25' Skiff Build

Yofish, thanks for the added images as explanation of the tank install. The 'off-to-the-side' views answer the questions about install itself but one design question remains; why the sloped 'beds' for the tank? You could have put a horizontal piece in place of the knee or sloped piece of bent materi...
by Kevin Morin
Wed Mar 27, 2019 10:27 am
Forum: Metal
Topic: 25' Skiff Build
Replies: 113
Views: 13732

Re: 25' Skiff Build

Yofish, some questions to clarify the software discussion a bit, and then some about the tank and install. In the software for NC cut path files you ended up with some radius or circlular curves that were defined by the software with many points- very close together to approximate a clean smooth cir...
by Kevin Morin
Sun Mar 24, 2019 4:11 pm
Forum: Hankinson designs
Topic: CNC Conversion
Replies: 13
Views: 2762

Re: CNC Conversion

While not truly conversant with the actual plans for the many pretty wooden boats in the Glen-L catalog- on thing that seems pretty important in any frame cutting exercise is that the NC router would have to be four or five axis? a 3Axis machine couldn't hope to put a bevel (per station) on the fram...
by Kevin Morin
Sun Mar 24, 2019 3:23 pm
Forum: Metal
Topic: 25' Skiff Build
Replies: 113
Views: 13732

Re: 25' Skiff Build

Like Yofish, I build small welded skiffs more than anything (my current project; I'm in the helper role not builder) and for the most part they're my own designs/creations. So I follow a very similar work flow within the DelftShip Pro software that Yofish has shown in the screen captures above. (I p...
by Kevin Morin
Fri Mar 22, 2019 6:40 pm
Forum: Metal
Topic: 25' Skiff Build
Replies: 113
Views: 13732

Re: 25' Skiff Build

Billy C, a few notes to make sure that we're talking apples about apples - re: software. Prosurf is a surface modeling application, so is Delftship (& Pro) so is Rhino and a few others. SketchUP is only a surface modeling application with very limited lofted or swept curved surfaces. In SketchUP, pl...
by Kevin Morin
Sat Mar 16, 2019 9:09 pm
Forum: Metal
Topic: 25' Skiff Build
Replies: 113
Views: 13732

Re: 25' Skiff Build

Forum Readers, Yofish builds in a town named Homer, Alaska, that is on a nice bay, Kachemak Bay (ketch'-i-mack) that opens onto the lower Cook Inlet that is a northern oriented arm of the Gulf of Alaska. The North Pacific can be a nice calm stretch of ocean, but then, in other instances, is subject ...
by Kevin Morin
Fri Mar 08, 2019 7:20 pm
Forum: Metal
Topic: Metal Marine Tanks (mainly welded aluminum)
Replies: 78
Views: 35712

Re: Metal Marine Tanks (mainly welded aluminum)

jetmetal, dedicated tank fittings like these https://www.fueltankparts.com/fuel-tank-parts-accessories/weld-in-fittings.html are lower profile extending from the tank face or top surface. There is some thread down inside the tank allowing the ST El or other hose adapter to remain closer to the tank ...
by Kevin Morin
Thu Mar 07, 2019 6:31 pm
Forum: Metal
Topic: Metal Marine Tanks (mainly welded aluminum)
Replies: 78
Views: 35712

Re: Metal Marine Tanks (mainly welded aluminum)

jetmetal, I use 1" fittings because I expect to bush the fittings for the fuel vent hose down from the aluminum to whatever hose barb nipples are used but large vents avoid many headaches in fueling/filling up. I encourage you to find one of the fuel tank fittings and hose vendors like Perko, Attwoo...
by Kevin Morin
Thu Mar 07, 2019 6:16 pm
Forum: Metal
Topic: Metal Marine Tanks (mainly welded aluminum)
Replies: 78
Views: 35712

Re: Metal Marine Tanks (mainly welded aluminum)

jetmetal, in regard a tank draw sump or one combined with the water bottoms sump; if they're tended regularly (??) they could be the same wall as the tank and probably do just a well in longevity. I tend to use heavier material because I've had so many tanks in where the bottoms were not pulled/pump...