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Log in or Sign up. Boat Design Net. Tags: aluminum boat boat build plating hull. Hello All - I am new to this forum and would like some advise or feed back on this build.

I pick up the plans from Glen-l. Frames and keel has been assembled and I am creating the template to plate the hull right. JPG File size: What do the plans call for? What types of tools do i need to bend the two halves together? Also how can I calculate the curvature of the boat to build this form? Great advice, but it seems like a lot to go through given I have the frames set up and the template for the hull plating ready. The boat is 20 feet long by 8 feet wide i re uploaded the picture of the boat as it sits today.

This boat is a one off as most boats built by amateurs. Personally building a CAD model of the boat and then creating a mold for it seem a bit excessive. I appreciate your help, anyone else have some ideas? Edit: Just had a relook through the pictures, so I think I have a better idea what you are asking. The normal way is to simply apply pressure with timber lengths and compression straps until the plate conforms to the metal jig.

You can hold it in place with clamps at each edge with clamps alone, or you can use timber strips clamped over the aluminiumwith the timber clamped to each steel frame. PS - if you get a really difficult piece to bend, this has some info. More details of pulling plates to frames. Note how they drill a hole through the bottom of the sheet, and insert an eye hook, so they can pull a curve into the bottom sheet at the bow.

Found a good video on the welding process for aluminium. Thanks for the info!!! I appreciate the feedback. What type of boats have you guys built? Some comments Our niche was building 18 to 24 foot aluminum boat building books zip codes 8 foot beam aluminum jet boats but have built up to 36 feet. This is considerably different than heating steel to a red aluminum boat building books zip codes phase and having it hold its shape.

Aluminum oxide has a higher melting temperature than the aluminum underneath so the shape can be retained until the outer temp is reached and entire section can just fall away. As an experiment, take a length of aluminum and heat it and you will discover what I am explaining. We had temp sticks, a crayon, that as we heated the stringer, we would just take the crayon and make a mark with it on the heated aluminum, if the crayon melted and got shiny, then that is the temp of the material.

I do not want to give you inaccurate information here but, memory is questionable, I think we used degree temp 2 The sweep of the bow appears quite tight. Generally if the bow has a fast or tight curve then the chine cannot also have the same tight turn or the plate will not fit flat.

As you have a plan from a known builder, there is a good chance that the two are compatible to make a developable surface and that the sheet will in fact lie on both edges tightly. As we built on a steel, male jig, we had tabs welded on aluminum boat building books zip codes male jig and if a piece of aluminum was not snugging up, we would get under the jig and drill up through the hull, drop a bolt in it and pull the plate down to the jig.

After, just don't forget to weld up the holes. You should make the template as one compete piece, joining the ply with a thin batten at the 8 foot intervals, thin so that the shape or curve of your pattern is not impacted from the hard spot that a heavy batten can produce at the joint.

If you make a template from small independent pieces there is a chance that you will have fitment issues. Other wise you will have a disjointed joint, had to.

Unless absolutely critical, I would not use Tig on a boat hull. The slow speed of tig 7 welding introduces a lot of aluminum expansion into the sheet so that you actually can weld in deformation in the hull. Some will say not, and occasionally we used Tig but not.

When you are doing a butt weld you must cut out the backside of the weld before welding the backside. Most important!! Aluminum aluminum boat building books zip codes hardens extremely easy. And the stress concentration due to the notch effect can cause failure due to small localized work hardening 8 Also when you start and stop any long seams, you must cut back the bead where you stopped to ensure that when you stopped the first bead there was not a weld crevice due to the aluminum boat building books zip codes cooling quickly.

Aluminum boat building books zip codes can try this out on some scrap. If I think of anything else I will let you know. BarryFeb 26, Thank you for the input. I will post some pictures of the progress. To see the exact path of the blade into the back side of the joint, aluminum boat building books zip codes have to get quite close to it.

This is a recipe for a disaster as with the exposed blade and being close to the saw, they can kick back and the carbide blades do not slow down for organic material. It was a safety policy in our shop that any potential kick back path did not cross over a thigh, leg. They have less mass and if they bind they are harder to control kick back but sometimes due to access, they are used.

Recommend two levels of eye protection, only as your head is so close to the hot chips, safety glasses and face shield, Did not intend to be so wordy, but this is one of the most dangerous hull welding processes of constructing a hull, short of dropping it on someone when you roll it.

Last edited: Feb 28, BarryFeb 28, What is the purpose of cutting the backside of the weld? You must log in or sign up to reply. Show Ignored Content. Similar Threads. Replies: 3 Views: 1, Mr Efficiency Aug 23, Replies: 57 Views: 2, Replies: 7 Views: 3, Aluminum Boat Buildng in shipyads?

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Boat Antifouling Though in my final tell I had systematic a wooden for a vessel this sadly did not go according to plan. again of a boxt. You continually took the lot of a clamps off after multiform hours, though it certainly still creates me shaken given I'm not an skilled).



I dont do yachts but you can download some free drawings for small ali boats on our website - they might give you some idea as to whats involved. There is also a couple of links to books about ali boat building on Amazon on the site. Nothing for interiors though. Robbo , Sep 6, You must log in or sign up to reply here. Show Ignored Content. Similar Threads. Replies: 3 Views: 1, Mr Efficiency Aug 23, Replies: 57 Views: 2, Replies: 7 Views: 3, I need help building this aluminum boat palmettoknife , Feb 10, , in forum: Metal Boat Building.

Replies: 18 Views: 33, Ike Apr 22, Pollard cadmus , Apr 6, , in forum: Metal Boat Building. Replies: 1 Views: 2, Replies: 7 Views: Replies: 5 Views: 1, BlueBell Aug 5, For hull bottoms and side sheets, and alloys are used. They have the further advantage of achieving their strength without heat-treating, meaning that when welded they maintain most of their mechanical properties.

Of the two, is the stiffer, favored for decks and topsides, while conforms more easily to curves on the underside of the hull. We routinely source materials to maximize sheet utilization and lower costs, and if we can find an alternate alloy to save money, we pass those savings along to our clients.

Aluminum prices have been rising in anticipation of less foreign material coming into the United States. Aluminum prices vary for a variety of reasons, and tariffs are only one variable. Historically, aluminum prices are down from a high in as metal production has increased. Using common stock sizes of alloys and smaller sheets will help with pricing, scheduling and stock availability.

At Naimor metal fabrication, we work with several aluminum suppliers and order large quantities of material annually. We then bring our economy of scale to our client base. We can source aluminum from our extensive supplier base to quickly fulfil orders and ship parts anywhere in the country, meeting strict delivery deadlines. As a boat builder, you may be wondering how shipping cut parts will affect boat build costs.

The current supply environment may affect regional differences in metal supply costs, and savvy buyers can find economic advantages. Minimizing freights costs is always a necessity, no matter the political or economic circumstances. Optimizing the pallet space to slim down the dunnage and reduce shipping costs is an art.

Packaging and stacking while protecting product can all make it easier to get more cargo on a pallet and help the carrier maximize utilization of trailer space. Less space on a truck means lower freight costs. At Naimor, we regularly package parts for pallet shipment and include this in our service.

Bidding out your Less-Than-Truckload freight is a good idea to be able to align your needs carriers that have the best price point. However, they cost your first born child to buy, so maybe see if you can rent one for your build. If a pulse mig is not an option, you need a spool gun for your welding machine.

They are reasonably priced and most major manufacturers make them. You will need exceptional welding skills to use a standard spool gun though. Practice your different welds. Avoid burning through. I have been welding for 17 years and completely burned through my first boat. Even better, hire a friend with boat-building skills. Have them go over the welding techniques with you.

You will thank us later for this. The design files come with a jig. I chose to put mine on some custom-built sawhorses. We leveled our sawhorses with a laser, bolted them to the floor, bolted the jig to the sawhorses and then tack-welded the boat to the jig. Some builders choose not to tack weld the jig. The primary idea behind back step welding is to eliminate distortion as much as possible.

This is very important. Weld towards the middle of the boat, but sequencing your welds out for the middle. See diagram. Try to keep the heat from being concentrated in one area for too long. My designer stressed the importance of this process. Follow the incremental back step process. This one is easy. Unless you have experience or access to some expensive machines, you are going to regret it.

I certainly did on my first build. After about eight hours of sweating profusely from manual tube bending, I will never do this again. Yes, you could heat the aluminum with a torch and make things easier. Talk to the motor manufacturer and determine the best operating height of the motor. Not doing so could damage your motor or greatly reduce the performance. We hope these tips will help successfully build your first aluminum boat.

Take these lessons from us, and get a specialist or a friend with the preferred experience to assist you. We can do it for you! Learn more about our custom-built aluminum boats here.





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