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  1. paulsboutique's Avatar
    Member Since
    Apr 2017
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    South Oz
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    26
    1 Week Ago  Dec 5, 2017, 6:23 PM - District 9 arc generator 3d print #1

    So while i wait for parts for my ABS printer, the pulse rifle build has come to a stand still. Seeing an opportunity, my boys hijacked me and said they wanted new costumes for Comic Con 2018. My eldest has just recently watched District 9 and wants to go as Wikus, complete with prawn hand and arc generator..... Ok then ......

    I used a few reference pics of arc generators that were here on the RPF /google images and drew up my own take of the weapon in Fusion360.

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  2. paulsboutique's Avatar
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    1 Week Ago  Dec 5, 2017, 6:41 PM - Re: District 9 arc generator 3d print #2

    Next up i started cutting up the parts in Netfab, as my PLA printer only has a build area of around 170x 170x 200 mm.
    First up was the bottom barrel.
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    I printed the cylinder and front nose in ABS at .1 and the barrel parts are done at .25 in PLA.
    Pretty standard stuff next, glued with superglue and then i run the soldering iron down the seams to give a stronger join.

    Then it was the main Body and stock.
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    Im sure if you ask 10 different people how to prep PLA you will get 10 different answers, but for me 80 grit then 240, car bog, rinse repeat, then hit it with high fill auto primer, 240 - 400 grit and i generally have a nice base to work with with only minor touch ups.

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  3. paulsboutique's Avatar
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    1 Week Ago  Dec 5, 2017, 6:51 PM - Re: District 9 arc generator 3d print #3

    Printed the handle and a few more parts.
    Click image for larger version. 

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    I wanted the cooling fins on the motor to be quite thin, and the first version printed out really well. Unfortunately letting my boys handle it , the fins broke off, so as this is for cosplay i redesigned it to be a bit thicker. I still need to add the top rectangle back and finish the other greeble above it, but this version will be alot more hardy.
    Click image for larger version. 

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  4. paulsboutique's Avatar
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    South Oz
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    1 Week Ago  Dec 5, 2017, 7:02 PM - Re: District 9 arc generator 3d print #4

    Its about this time my mate hit me up and asked for a favor - he wants to build an electric skateboard and needed a motor mount making. So he gave me his measurements and i knocked it up for him
    Design process for anyone interested
    1. dodgy measurements on napkin
    2. draw design in Cad.
    3. 3d print to test fitment
    4. CNC out of Aluminium
    5. drink beer.
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  5. paulsboutique's Avatar
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    1 Week Ago  Dec 5, 2017, 7:10 PM - Re: District 9 arc generator 3d print #5

    Anyway back to the arc generator....
    Next up i had to draw those lovely organic shapes of the top barrel.... a few goes later and I am happy with the design

    Click image for larger version. 

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    Starting to print them out - they are at .15 layer height and took 4 hours each for the first 5

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    A couple of dodgy screenies from octoprint of the two pieces with the pipes coming out - about 6 hours each at .15
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  6. RPF Premium Member tmax's Avatar
    Member Since
    Mar 2014
    From
    Middle Earth (aka - New Zealand)
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    6 Days Ago  Dec 7, 2017, 12:46 AM - Re: District 9 arc generator 3d print #6

    Awesome work! I see wires... you adding electronics?


    Sent from my iPhone using Tapatalk
  7. RPF Premium Member mrbungle's Avatar
    Member Since
    Jan 2009
    From
    clanton,alabama
    Messages
    1,167
    5 Days Ago  Dec 7, 2017, 11:16 AM - Re: District 9 arc generator 3d print #7

    very cool. my favorite weapon from the film.
  8. paulsboutique's Avatar
    Member Since
    Apr 2017
    From
    South Oz
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    5 Days Ago  Dec 7, 2017, 11:59 PM - Re: District 9 arc generator 3d print #8

    tmax said: View Post
    Awesome work! I see wires... you adding electronics?


    Sent from my iPhone using Tapatalk
    Cheers

    Yep i was planning on putting a superflux LED in the spark plug and red leds in the centre box. I have also planned for a couple of speakers in the top cylinder for the sounds. Batteries and arduino + amp will go above the handle.

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