How do i have to make a boat out of metal and it of course has to float.?

Question

the boat has to hold 5o penniesand the tank will be 15 cm. by 15 cm.

Answer 1

Well how durable does it have to be? Heavy tinfoil coud be used to make one that will float, (but won't last too well if you drop it on the floor)!

You can go to just about any hobby/craft shop and buy thin aluminum or brass/copper sheets These are very thin and can be cut with household scissors (strong ones), -they might be .003 -.005 thick. These are the ones used for "depression stylis art" where you "stretch material to inside or outside "depth" pictures- or "pinhole" pictures(nail art)!  Aluminum can be cut into pieces and glued together with epoxy cement (quick set type, - takes less than 5 min to be dry to touch). or you can buy the copper sheets - which you can solder together with a cheap solderiong iron (also available at hobby/craft store). If you go this route, you can build as elaborate as you want (or able at least).   As for size you need, I woud start out by floating small saucers or the containers and see how much displacement you need to support the weight you want to hold inside!, Displacement is how much water it will "hold" outside with desired weight inside.  The water holds the boat up because it has more air inside than outside - therefore water holds boat up becasue it is lighter than the water!(called boyancy).  Did you know that they made troop  ships out of concrete during WW2 ?

Remember you want the weight to be below the "center of gravity", - or the "boat will tip over and dump stuff out (as well as sink)! My guess woud be that you need a depth of about 3 times the width of a roll of pennies, - length of about twice a roll of pennies. And at least twice the height of the roll of pennies. Now of course you can work with these paremeters by making the boat deeper, wider or longer, just so that it has about the same same amount of displacement!  If all else fails you might try a short narrow deep boat.(way deeper than you think you need)- then note the water line, and trim off about to 1/4" above waterline.  Of course putting the pennies loose woud distribute load area more usefully, -- just make sure that at least 2/3 of weight is below the center of boat (tip to bottom). moving several pennies from front to back (or the other way will re-distribute center of gravity" to raise or lower desired end a bit!

The wider and longer the boat is the harder it will be to tip it over!- And the shallower the boat can be. it is still better to keep the money below the waterline tough, as the boat is more stable that way. If "surface area" is large enough, it is even possible to pile pennies higher than waterline,and have "boat' extemely shallow, -- but pennies will have to be in middle, and it is less stable, but will float ok!

You can also experimenmt with thin plastic,- like comes on all the plastic bubble stuff nowdays, just scotch tape pieces together and see what you can do with size and still hold weight. This way you can play with shape as well as physical dinensions,- and not waste your valueable material!  When you figure out what pleases you, then just shape the material the way you want it.   You can also use paper to figure out how to cut the material so that you can bend over at the bottom, --"allow tab material" to bend over at the rear, and also what curves to make ,- to have curved front part meet in  middle, - or angle  with tabs to solder a solid "flat piece" on at angle to make front!  The "tabs" are pieces about 1/4" wide that you bend over to solder the ends on to main part!

It is a whole lot easier to do than it is to explain how to do it, -- so just use your imagination and expirament a little, and you will do just fine!

Answer 2

consult grumman

Answer 3

Can you use an aluminum pie pan?

Answer 4

you don't have to do anything.... stop being so harsh on yourself.

Answer 5

Get A pot cut off the handle put a name on it call it a boat, it'll be the cheepest boat you will ever own.

Answer 6

OK, so you want it to be square.  I would stilll use Al foil with enough freeboard to handle the load.  But distribute the load more towards the center to enhance stability.  Also the bottom could be lower in the center than at the perimiter, again for stability.