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  1. Too Much Garlic's Avatar
    Member Since
    Dec 2005
    From
    The dictatorship of Denmark
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    10,564
    Oct 30, 2017, 6:11 PM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #26

    That's a really cool project and coming along nicely.

    Where did you get that 3D file? Looks awesome.
  2. RPF Premium Member 13doctorwho's Avatar
    Member Since
    Jun 2012
    From
    Houston, Texas
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    1,030
    Oct 30, 2017, 8:28 PM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #27

    I can not believe how cool this is. I can't wait till it's done!!
  3. CT1138's Avatar
    Member Since
    Nov 2016
    From
    Chicago
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    456
    Oct 31, 2017, 1:54 AM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #28

    Oh man, this is really coming along! It looks great!
  4. daredevil665's Avatar
    Member Since
    Jun 2013
    From
    Emilia Romagna Italy
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    514
    Oct 31, 2017, 2:30 AM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #29

    Beautiful and intriguing work!
  5. xenobiologist RPF Premium Member Leigh's Avatar
    Member Since
    Jul 2011
    From
    Cambs, UK
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    1,739
    Oct 31, 2017, 3:44 AM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #30

    Awesome!!
  6. iloveyouiknow87's Avatar
    Member Since
    Oct 2017
    From
    Rome ,Italy
    Messages
    23
    Nov 2, 2017, 5:08 AM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #31

    amazing job man!!!!!!
  7. RPF Premium Member jess the pirate's Avatar
    Member Since
    Oct 2014
    Messages
    64
    4 Weeks Ago  Nov 12, 2017, 5:33 PM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #32

    You could always coat it with cassini's plaster, or any P.I.P for that matter, that way you could cut out the pva glue stage altogether. It's made for outdoor sculptures and its pretty damn cheap. Also whilst its kicking you can add the little details like the stan cast has, i.e pits and whatnot. Just a thought! Keep going, its pretty amazing already and the teeth supports is a genius idea! Well done!
  8. RPF Janitor RPF Premium Member Lear60man's Avatar
    Member Since
    Jan 2003
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    4,007
    3 Weeks Ago  Nov 19, 2017, 4:11 AM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #33

    Ya know......this is the type of thing that you could make a good chunk of change once finished and presented correctly.
  9. ChickenHaunt's Avatar
    Member Since
    May 2010
    From
    Los Angeles
    Messages
    342
    3 Weeks Ago  Nov 19, 2017, 5:25 PM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #34

    Really nice
  10. Barking Dragon's Avatar
    Member Since
    Dec 2007
    From
    Australia
    Messages
    99
    3 Weeks Ago  Nov 20, 2017, 4:31 AM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #35

    Outstanding work mate loving how this is coming together
  11. Howat Props's Avatar
    Member Since
    Apr 2013
    From
    Glasgow, Scotland
    Messages
    127
    5 Days Ago  Dec 8, 2017, 10:41 AM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #36

    wow! this is going to look amazing! I would love to make this myself
  12. ShareAHack.com RPF Premium Member shareahack's Avatar
    Member Since
    Jan 2015
    Messages
    26
    1 Day Ago  Dec 12, 2017, 4:02 PM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #37

    Thanks all for the feedback! It's been a little bit harder working outside as the weather got cooler but I've made a bit of progress since the last post and have since moved the project indoors.

    jess the pirate said: View Post
    You could always coat it with cassini's plaster, or any P.I.P for that matter, that way you could cut out the pva glue stage altogether. It's made for outdoor sculptures and its pretty damn cheap. Also whilst its kicking you can add the little details like the stan cast has, i.e pits and whatnot. Just a thought! Keep going, its pretty amazing already and the teeth supports is a genius idea! Well done!
    Thanks Jess for the great idea to use plaster! I think I'm going to attempt a combination of plaster + cheap clay over the foam on certain areas before applying the resin/fiberglass. I'm hoping the plastered areas dry with cracks (I may try to induce the cracks somehow) to better simulate the look of fragmented bone.

    Here's a few more progress photos of the lower jaw and beginnings of the mounting system. I decided to keep the mounts super simple and easy to disassemble for transporting around.

    I hot-glued some temporary wooden braces/supports to the lower jaw to maintain rigidity while building the mounts. For now, the base is just a piece of MDF with 4 castor wheels on the base. The skull will appear to 'float' over the much smaller base.



    Here I cut out a small cavity in the top of skull and epoxied in a piece of plywood with a cast iron flange screwed on to it. I slathered epoxy and polyurethane glue so that the glue would puff up and expand into he foam cavities. Once In place I jammed a bunch of the bamboo BBQ skewers in and around the wood to reinforce and spread the tension over a wider area. I then added more poly glue to firm everything up. A 1/2" black iron plumbing pipe will do most of the work holding up the skull. This main connection point will be reinforced later with fiberglass mat and resin.



    I hoisted the top part of the skull up with a rope to more easily balance it in position over the base:



    I used another scrap piece of pipe and a decorative flange/cover thing I found to act as the base's pipe holder that mates with the iron pipe:



    To hold up the lower jaw, I machined these little side-mounted connectors that are fastened to the sides of the jaw in 4 places. I mounted them on plywood so they have a firm base to hang on to instead of just the foam. Later on these connection points will also be reinforced with resin/fiberglass. The chicken wire was just an afterthought and I figured it might help with grabbing on to the fiberglass/foam.

    Smaller steel dowels run through the pipes that will connect to t he side mounts. The mounts have set screws tapped into them to hang on to the dowels when in place.



    And here's a look at what the final orientation/positioning will be! I can modify the height, position of the jaw, and how open the mouth is just by changing the lengths of the iron pipes.



    Every now and then I post some progress/videos on Instagram if anyone interested: https://www.instagram.com/shareahack/

    Hope everyone is gearing up for a great holiday! Cheers
  13. RPF Premium Member 13doctorwho's Avatar
    Member Since
    Jun 2012
    From
    Houston, Texas
    Messages
    1,030
    23 Hours Ago  Dec 12, 2017, 5:52 PM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #38

    God, I love this project. I am super jealous!
  14. CT1138's Avatar
    Member Since
    Nov 2016
    From
    Chicago
    Messages
    456
    22 Hours Ago  Dec 12, 2017, 6:38 PM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #39

    It's really taking shape into something gorgeous!
  15. daredevil665's Avatar
    Member Since
    Jun 2013
    From
    Emilia Romagna Italy
    Messages
    514
    14 Hours Ago  Dec 13, 2017, 2:36 AM - Re: Full Sized T-Rex Dinosaur Skull - advice on coating/finishing/painting rigid foam #40

    Compelling work! I like solutions. I am eager to see more progress!

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