Post
by aferguson » Mon Apr 09, 2007 3:16 pm
ok, being i'm the laziest person in the world, i've come up with what i think is a quick and easy way to make a full hull u-boat. I'd appreciate comments in case i'm overlooking obvious pitfall(s).
The first step is to enlarge photocopy up to proper size, side and top view pictures of a u-boat i have (this is not a card model but a large illustration from a book). This part has no flaws as i've done stuff like this in the past.
The u-boat will be three, approx. 4 foot sections (doing a 1/20 scale type ix, as the hull shape is much simpler than a type vii).
First step is to make the deck sections, which is easy, as i've already done stuff like that for the waterline uboat i was working on.
Then, i will laminate the hull side pictures to bristol board, creating a four foot long hull side piece. This is also easy as i've done stuff like this before. Then i do the opposite hull side, so i have two halves of a hull for one of the three sections. I then glue the hull sides to one of the deck sections (whichever section i decide to work on at the time).
All this is very easy and do-able....i've already done it for my waterline uboat. Here's the tricky part: For the bow and stern sections i will glue the bow tip (or stern tip) of the hull sides together and then mate the hull sides down the bottom centerline (using duct tape and glue) after curving the hull sides (so, to clarify, i will curve hull sides and then glue them together along the bottom of the hull. I will be guessitmating how much curve to use but i can do it by eye). So now, i've basically created a bow or stern section which is kinda like a cone, glued at one and open at the other.
After letting dry overnight i then cram the bow (or stern) section full of crumpled up newspaper to bulk it out, giving it a nice rounded shape and this also gives some support from the inside against external pressure. I plan to really cram it full of newspaper, so it's very solid.
Next step is the make the middle section, in the same way as the bow and stern sections, except that both ends will be open of course.
Now i make 4 identical formers, which are as close as i can make to the cross section profile of a type ix uboat at its widest point.
I put one of these formers in the open end of the bow and stern sections, so now all the crumpled newspaper is sealed inside and the hull has taken the shape of the former where i glued it.
I put another former in one end of the middle section, let dry and then cram crumpled newspaper in through the other open end then glue on the last former, so the middle section has formers on both ends.
And thats basically it, the three sections should mate together fairly well since the mating sections have identical shaped formers where they meet. I can think of a variety of ways of connecting the three sections, that's not hard.
After that it's just a matter of detailing, detail painting, building the conning tower and other do-dads (a chore but doable).
The tricky part (for me) was how to make the hull simply without going through the considerable effort of building a scaled up card model, which would take a few months probably. My way i think i could do in about a month.
It won't be 100% accurate in shape nor will it be a prize winning thing of beauty but what it will be is a decent looking, 12 foot long type IX uboat, which is light (for hanging) and costs about $100 to make.
I hope my explanation is clear. I'd appreciate comments.
i never met an airplane i didn't like...