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Re: Making a working '89 Batarang...updated pics pg. 6


That is SO cool ! So much functional stuff out there now ! Well done man !

Dude.

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Re: Making a working '89 Batarang...updated pics pg. 6


STOP THE PRESS!!

Keep on tweakin' that rang dude! You're definitely taking it to a whole different level! Thanks for the constant inspiration you give to the BOTB!

Gregg

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Re: Making a working '89 Batarang...updated pics pg. 6


Man [sign in to see URL]'ve gone crazy in the creations department lately... I'm impressed man! Great work emoticon

~Tim emoticon

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Re: Making a working '89 Batarang...updated pics pg. 6


Thanks again guys.
Tim,I got a million and one creative ideas,but no money to turn them into reality. This batarang cost me a week and a half worth of food so far and I'm a BIG eater. emoticon (I don't see things costing me [sign in to see URL] look at it as costing me food.)

Nobody wants to guess how it works? emoticon

John emoticon

Last edited by Blackwood Bat, 2/5/2005, 4:28 pm


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Re: Making a working '89 Batarang...updated pics pg. 6


Keebler Elf magic? emoticon

~Tim emoticon

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Re: Making a working '89 Batarang...updated pics pg. 6


rubber band?

drilled holes and glued something in place, something that took a long time to dry? flat elastic perhaps?

I see something in the pics on page 4, and on page 6 it looks like there's something going on with the back of it in pic 4. page 4 looks like

--Log in or sign up to see linked image content--


are you going to spill or do we have to get vigilante on you?
 emoticon

Tom

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Re: Making a working '89 Batarang...updated pics pg. 6


if I'm not mistaken though he already ruled out an elastic, embedded *or* on the surface.

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Re: Making a working '89 Batarang...updated pics pg. 6


Quote:

PatrickJ wrote:

if I'm not mistaken though he already ruled out an elastic, embedded *or* on the surface.



well, namtaB said rubber sheet glued into notches, and I got a "Tom,you're sorta,kinda,halfway in a roundabout way on the right [sign in to see URL] the right train anyway. " with the embedded elastic, so was just trying variations of the theme

I just use blatant hinges when I want something to fold, --Log in or sign up to see linked image content--
--Log in or sign up to see linked image content--

When I have time to cast up another batch I'm going to cut a slot in the edge and embed a magnet and some metal so it stays open. BTW, made 1/2 then molded and cast twice, assembled and cast solid copies for throwing, this was my nightwing batarang take, but we ended up using the large circular style in the movie. Also want to add a spring so it'll pop open on it's own, as it is you have to flip it open.

anyway, I'd still like to read how it's done, and stick with my [sign in to see URL] just twine pulled tight?

Tom


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Re: Making a working '89 Batarang...updated pics pg. 6


Tom was definitely very close with his first guess. Tim was almost right. emoticon

Bungee cord is the answer.
In the molds,I cut 3/16" tubing to fit going straight across. The bungee is just about that size and slides through pretty well. The thickness part of the rang at it's thinnest is 1/4" thick,so everything needed to be precise. The tubing was done for both strength so there's isn't any strain on the resin,plus it's a perfect sleeve so no drilling. Also,I put magnets and steel in to lock it [sign in to see URL] working on that. I didn't take any pics while doing it,but you can see what I mean by these pics.
--Log in or sign up to see linked image content--

The cord is secured to one side,then threaded through the two middle sections and secured to the other side.
--Log in or sign up to see linked image content--
--Log in or sign up to see linked image content--


John emoticon

Last edited by Blackwood Bat, 2/6/2005, 3:56 am


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Re: Making a working '89 Batarang...updated pics pg. 6


hey bungee cord IS elastic emoticon

I can't believe I would overlook the possibility of something else like the tube in [sign in to see URL] all my cable control experience.... oh well.

In any case, Nicely done! I'd still like info on one, always wanted that fella, and with one this good looking, why spend time on sculpting, molding, and casting my own.

btw, what did you use to mold it?

Tom

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Re: Making a working '89 Batarang...updated pics pg. 6


Yeah Tom,like I said you were damn close. emoticon
Let me work out the bugs and I need to get some good resin and tint and I'm sure we can work something out.
This is the rubber molds from [sign in to see URL] equal parts of A and B. Not sure of the model # or whatever,but I could dig it out of the trash. They seem to work pretty well,although I don't really have any experience with mold making,so I have nothing to compare it to. They're working for me! emoticon

John emoticon

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Re: Making a working '89 Batarang...updated pics pg. 6


yeah, let me know what you used to mold it, it looks like it's translucent, which would be of great use on a few things I'm doing, haven't looked through the site recently to check out molding materials. 1:1 mix is great, don't have to bring the balance off the shelf and play mad scientist.

I grabbed my book here, have tech sheets on 70D, seems to be pretty close to SC 325 , so you might want to take a look into that for casting black copies up, also, for the cost, the metal powder coating/casting isn't bad, think I paid under $10 for a pound of aluminum color. It really does help on painting and cleanup, seems to hold paint on better for me too. No luck on the original pigment I had, must have tossed the container, sorry.

Tom

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Re: Making a working '89 Batarang...updated pics pg. 6


Tom,it is 'Smooth-On PMC-121/30 Mold Making Rubber'.
Yes,it is translucent and looks exactally as in the pics. 2 part,1:1 ratio mix and it takes about 16 hours to cure. It also claims that if you bake it for about 6 hours at 150 degrees it will strengthen it. I did not do this,but probably will.

 Tom,are you saying this resin that I'm already using can be tinted black with a powder as opposed to liquid tint?
If so,is it a matter of dusting the mold or mixing into the resin? I would like to try this because I can just run to the store to get this stuff instead of ordering it.

John emoticon

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Re: Making a working '89 Batarang...updated pics pg. 6


Very cool John!emoticon Can't wait to see it finished.emoticon
Michael

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Re: Making a working '89 Batarang...updated pics pg. 6


Are you just using glue to secure the bungee cords?
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Re: Making a working '89 Batarang...updated pics pg. 6


Can someone post pic of how to do a mold.. step by step... that would be great.. i wanna learn emoticon
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Re: Making a working '89 Batarang...updated pics pg. 6


Thanks Michael.
Yes I'm using glue to secure the bungee cord,but it gets a little more involved than just a drop of glue. There's a lot of constant tension on the cord,so it really needs to be in there good.
I think I worked out a little trick to make it hold really well. emoticon
I'm still experimenting,but I feel confident.

Proximo,I have very litle experience with mold making,but it was really easy to. Especially since it's only a one piece mold. Just put the piece you're molding in a plastic TupperWare type container,mix the two parts and pour it over the piece. Let it sit for the proper amount of time and the mold is done.

John emoticon

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Re: Making a working '89 Batarang...updated pics pg. 6


Quote:

Blackwood Bat wrote:

Proximo,I have very litle experience with mold making,but it was really easy to. Especially since it's only a one piece mold. Just put the piece you're molding in a plastic TupperWare type container,mix the two parts and pour it over the piece. Let it sit for the proper amount of time and the mold is done.

John emoticon



Thanks man.
Where can i bye this stuff? My local hobby store there i got the clay and stuff...

Sounds simple... but first i have to get better on sculpting hehe

Prox

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Re: Making a working '89 Batarang...updated pics pg. 6


I got mine at my local hobby shop,but I think most people get there stuff through the internet.
When you go,just ask if they have mold making material and if they don't ask where to get it. They should be able to help. emoticon

John emoticon

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Re: Making a working '89 Batarang...updated pics pg. 6


Thanks dude for all help.

If you have some spare time or pic on your hard drive, Can you post some pics of the 89 rang ?
One from the top and a few detailed.

It would be great because i cant find detailed pic anywhere :S...

Im gonna try to make a nice lookin 89 rang and if im happy whit it .. im gonna try to mold it.

EDIT... Almost forgot... Someone got any better pic of this Batarang from Batman & Robin?

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Last edited by Proximo, 2/6/2005, 5:38 pm
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Re: Making a working '89 Batarang...updated pics pg. 6


John,

    You did a great job there buddy. I hope the info I sent you was of some use.

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Re: Making a working '89 Batarang...updated pics pg. 6


It sure was Ed,thanks.
I didn't reply to your email,did I? emoticon Sorry,I'm terrible at that sometimes. emoticon

John emoticon

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Re: Making a working '89 Batarang...updated pics pg. 6


So how did you keep the bungee taunt while glueing it?
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Re: Making a working '89 Batarang...updated pics pg. 6


 emoticon emoticon emoticon emoticon emoticon emoticon emoticon emoticon ...please dont threw that on me please dont!!!!!

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Re: Making a working '89 Batarang...updated pics pg. 6


Blackwood, Thanks for the info on the material

Mold tutorial, there are a lot of them out there, I have one on making a silicone case mold (as well as TONS of materials suppliers linked on this section of my site [sign in to see URL]

I've seen some hobby shops selling resins, silicone, and even some epoxy (casting resins) so you just have to look and ask around if you want to buy locally.

I'll get some other molding tutorial links if people want them.

Tom


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Re: Making a working '89 Batarang...updated pics pg. 6


 emoticon emoticon So awesome work..

Last edited by Proximo, 2/7/2005, 10:46 am
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Re: Making a working '89 Batarang...updated pics pg. 6


Why don't you just put a piece of spring steel in the rang? It would be alot easier.

No need for a hinge, and it would take up less time than that bungee I am sure.

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Re: Making a working '89 Batarang...updated pics pg. 6


I just had a realization as to why a piece of spring steel might not have been suitable. Steel doesn't stretch and snap back like elastic does. I'm thinking an elastic is ideal because it tries to return to its normal shape(and length), keeping two surfaces flush and kind of locked against eachother as long as it is trying to return to its shape. Spring steel would just make a floppy batarang, because it wouldn't pull the pieces tight against eachother.

Great job John! You've inspired me to work on creating myself an arsenal of bat-weapons! As I'm sure you've inspired others here too.

Last edited by PatrickJ, 2/7/2005, 1:09 am


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Re: Making a working '89 Batarang...updated pics pg. 6


Actually Rick,it would be alot more difficult.
The bungee cord is so easy it's ridiculous. All I do is put the sleeves into the mold and pour it. When it's cured there are perfect channels to run the cord through. Don't get me wrong,it still takes lots of time and patience to do and can be very frustrating. Everything's very small and needs to be precise or it won't work properly.
Patrick pretty much summed up the other reasons and that's exactally what led me to the bungee cord. emoticon

John emoticon

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Re: Making a working '89 Batarang...updated pics pg. 6


I have seen spring steel used in applications similar to this. I would have to do some experiments but for now it is only speculation.

Keep in mind that it wouldn't be 'floppy' as it would snap in place quite violently.

Does anyone know how the movie prop was made?

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