Author Topic: Three Legs are better than Two  (Read 29977 times)

Herr Doktor

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Three Legs are better than Two
« on: June 07, 2012, 02:23:16 PM »
I know I once said that I don't really 'do' Mechs, but that seems to have been a bit of a lie, as I've been working on a three-legged tank for a while now, based on the idea that the British Empire might have back engineered from Tripods left behind after "the War of the Worlds"...

...I started out with a selection of acrylic Christmas baubles, one of which was 160mm across, and three at 80mm across, three halves of which became the upper legs, with the help of three disposable plastic wine glasses, the lower legs came from a set of plastic vases, and the feet are the other halves of the 80mm baubles:



And that's what I had after a little bit of work, the sockets for both the legs and the ankles were push moulded in 2mm styrene:





The rather crafty way of articulating them was arrived at after I'd spent two days thinking of increasingly complicated ways of doing it: it being a further push moulded disc on each joint, trapping the socket moulding between itself and the hip or ankle:





Really pleased with the way it works, I'll probably use those non-scratch felt pads you can get for furniture feet to stop the paint from scratching when it's painted.

The knees are just old fashioned hinges, with 3mm threaded rod running though a set of 40mm Christmas baubles, all held together with brass dome head nuts:



Then came a door:



Which opens:



Of course, I then realised how difficult it would be for the crew to get on and off, so I made a folding ladder:







Then, in a moment of madness I decided to make an etched brass spiral staircase to get between levels:



The basic shape, which folded up to make this:



To which I added a handrail:



View through the door:



And a quick mock up of the upper level:



I will hopefully be etching  a six segment flor panel for this, in a mesh style, so you can see the lower deck through it.

I left this project for a while to finish off the Aerial battleship, but have been quite busy again in the last week, firstly putting some details on the legs:



^A flange with nuts and bolts on the shins, to make it look more industrial, and also some bracing on the upper legs:



And a door over the ladder slot:





A large grill on one of the other two sides:



Behind which sits this engine:





Also, a latch on the door:





The wheels are HO/OO train wheels with the flages turned off!

On the other side is another engine, based on the notion that Martian technology has three point rotational symmetry:



And here they both are, in situ:



An interesting exercise was making sure the legs didn't foul the engines!

More soon! ;)

The Inner Geek

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Re: Three Legs are better than Two
« Reply #1 on: June 07, 2012, 05:41:25 PM »
Holy moly! Your stuff is so detailed. It makes me want to scratch build something, even though I know it would sad in comparison  :(

Darkmessiah

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Re: Three Legs are better than Two
« Reply #2 on: June 07, 2012, 05:43:38 PM »
very clever use of materials with some really nice details, looking forward to the progress on this :)

Hemish

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Re: Three Legs are better than Two
« Reply #3 on: June 07, 2012, 06:14:30 PM »
Excuse me while I clean up the drool................ :twitch: :twitch: :twitch:

Thats spectacular stuff right there man, great work

Hunter Rose

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Re: Three Legs are better than Two
« Reply #4 on: June 08, 2012, 04:40:25 AM »
Fantatsic! I love the over all shape, of this and the details are superb, that spiral staircase is mind blowingly good!

Great work dude!  :-)
'Your knowledge of scientific biological transmogrification is only outmatched by your zest for kung-fu treachery!' ~ Black Dynamite

ultramini

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Re: Three Legs are better than Two
« Reply #5 on: June 08, 2012, 11:57:46 AM »
More than a model, it's a (master) piece of design  ^_^
Make Everything as simple as possible, but not simpler.
Galleries and WIP on Flickr!
My Blog (in italian)

struschie

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Re: Three Legs are better than Two
« Reply #6 on: June 09, 2012, 12:18:21 AM »
Extremely cool crafting - the spiral stair is awesome...!

Sharkdog

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Re: Three Legs are better than Two
« Reply #7 on: June 09, 2012, 12:56:20 AM »
Awesome stuff, it's very detailed and I like how you manage to turn some plain products (christmas ornaments and plastic wineglasses) into something much more intricate.
The joint for the legs is pretty ingenious I'd say, and did you design that photo etched staircase by yourself?

Herr Doktor

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Re: Three Legs are better than Two
« Reply #8 on: June 09, 2012, 01:35:01 AM »
Awesome stuff, it's very detailed and I like how you manage to turn some plain products (christmas ornaments and plastic wineglasses) into something much more intricate.
The joint for the legs is pretty ingenious I'd say, and did you design that photo etched staircase by yourself?

Thank you, and yes, the staircase was all my own work, drawn in Illustrator, and saltwater etched at home!

I've just about finished the artwork for the flooring, should get some of that etched today.

:)

Herr Doktor

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Re: Three Legs are better than Two
« Reply #9 on: June 09, 2012, 06:06:41 AM »
Bad form: double post, sorry- thought you might like to see the artwork for one half of the mesh floor:



Used up some of the space for dials and gauges, along with some "Herr Döktor's Laboratory" plates.

;)

Darkmessiah

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Re: Three Legs are better than Two
« Reply #10 on: June 09, 2012, 02:57:01 PM »
looking good Doc, where do you get ur brass etched?

Herr Doktor

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Re: Three Legs are better than Two
« Reply #11 on: June 09, 2012, 03:14:28 PM »
I'm doing it myself, using salt water as a conductor! :)

There are several really good articles on the web on how to do it, the only thing I've added to them is to use a heated laminator to transfer the design, it really helps!

Good article here:

http://steampunkworkshop.com/etching-tins-salt-water-and-electricity-compliment-steampunk-bible-article

Herr Doktor

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Re: Three Legs are better than Two
« Reply #12 on: June 12, 2012, 02:28:11 PM »
After 24 hours of being in a tank of saltwater, the first set of etchings is done:


And in place:


It's a little ragged in places, but the process stopped and started a bit due to having to modify how the power was supplied, but it's all running smoothly now, and the second fret's in the tank!

 :-)

struschie

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Re: Three Legs are better than Two
« Reply #13 on: June 12, 2012, 09:01:05 PM »
Amazing...!

baphomet44

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Re: Three Legs are better than Two
« Reply #14 on: June 13, 2012, 02:30:10 AM »
Its wips like this that reinforce how amateur my efforts are. This blows my mind. I am suitably impressed.

Hunter Rose

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Re: Three Legs are better than Two
« Reply #15 on: June 15, 2012, 04:17:55 AM »
Unbelievable! Really nice etching!
'Your knowledge of scientific biological transmogrification is only outmatched by your zest for kung-fu treachery!' ~ Black Dynamite

Herr Doktor

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Re: Three Legs are better than Two
« Reply #16 on: June 20, 2012, 02:00:19 PM »
Not really had much time to work on this of late- but I have been experimenting with the etching- it's not good, I'm investigating etching suppliers as I type!

All I have really done is put in three 'ports' on the upper surface:



Each will have a weapon, probably in a moving ball joint, one to be an Earthly take on a heat-ray, another to be an ordinary cannon, and the third...
Well, I'll just have to come up with something!

:)
« Last Edit: June 20, 2012, 02:06:00 PM by Herr Doktor »

struschie

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Re: Three Legs are better than Two
« Reply #17 on: June 20, 2012, 09:12:03 PM »
Looking forward your etching progress and mentioned tutorial.
What a hugh bugger you created - envious to see the upcoming detail ontop!

Herr Doktor

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Re: Three Legs are better than Two
« Reply #18 on: June 24, 2012, 02:24:10 AM »
Got the ball and socket joint done in one of the three 'dimples': two simple push-moulded 'cups', and a 40mm acrylic bauble:



I've had to order some more baubles, and some M1.6 dome nuts and bolts to hold them all together, should have them all rotating nicely by the end of the week.

Today, I hope to start on the heat ray...

Herr Doktor

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Re: Three Legs are better than Two
« Reply #19 on: June 24, 2012, 10:45:58 AM »
Possible heatray:



Made from the offcuts of the push moulded sockets, and a lid from a disposable insulin syringe.

:)