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    Official Mechanical powered Crossbow build

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    whiteraven
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    Official Mechanical powered Crossbow build

    Post by whiteraven on Sun Jun 17, 2012 3:32 pm

    First topic message reminder :

    Ok, so I have gathered a few things and a few ideas. Last night I got some stuff cut out on a laser cutter I have access to (love hackerspaces).

    So first official build part has begun...
    Had this cut out of corrugated cardboard.
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    stoneagebowyer
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    Re: Official Mechanical powered Crossbow build

    Post by stoneagebowyer on Wed Jul 11, 2012 6:32 pm

    Who cares how long it takes, and more pictures are a good thing. This looks just great. This thing is very gothic and horror-oriented. I just wanted Midnight Meat Train again a few days ago, and the climax to that movie immediately came to mind. If you haven't seen it, go rent it, Clive Barker story set in NY subways.

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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Fri Jul 13, 2012 9:40 pm

    So I'm just about finished with the overall design of the receiver group on my crossbow. Once I get it all done and converted to CAD files I'll send it to be cut in 1/8" steel.

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    Re: Official Mechanical powered Crossbow build

    Post by stoneagebowyer on Sun Jul 15, 2012 5:47 am

    Are you using a machine shop for this, and if you don't mind my asking, how much will it run you to have someone do this work?

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    Re: Official Mechanical powered Crossbow build

    Post by chaz on Sun Jul 15, 2012 6:27 am

    Raven

    Your reciever side plates seem to take a dip down to the nut, as the string is released it appears it will have bump up to overcome. Is that right? Just asking . The skeleton clock works look is very interesting. This thing will be quite the show piece.

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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Sun Jul 15, 2012 3:06 pm

    stoneagebowyer wrote:Are you using a machine shop for this, and if you don't mind my asking, how much will it run you to have someone do this work?

    I have a deal worked out with a friend to get everything water jet cut out of steel. I can get decent discounts on water jet and laser cutting though through a local hackerspace group.

    chaz wrote:Raven

    Your reciever side plates seem to take a dip down to the nut, as the string is released it appears it will have bump up to overcome. Is that right? Just asking . The skeleton clock works look is very interesting. This thing will be quite the show piece.
    Cnaz

    It does dip slightly towards the roller nut. was looking at several different crossbow trigger styles and I thought this may help in getting all the parts to fit within the 2" parameters of my receiver group with out any significant functional loss.

    Correct me if I am wrong, this is new to me.
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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Tue Jul 17, 2012 6:20 pm

    Few more updates on the jaw piece for the tip of the crossbow. A little patience and some Paper-Clay and it seems to be turning out nicely. (Too bad the paper clay dries so slowly... work a little, wait alot, work a little...)

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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Wed Jul 18, 2012 4:10 pm

    Then I used a local hackerspace's laser cutter to cut some plexi for a prototype.

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    Re: Official Mechanical powered Crossbow build

    Post by chaz on Thu Jul 19, 2012 10:37 am

    Raven.

    Lookin' GREAT !

    Chaz
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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Sat Jul 21, 2012 2:33 pm

    Ok, so I am working a little rework on the whole trigger group. Someone Wise advised that if I kept closer to the original design it would function better.

    So updates coming soon.
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    Re: Official Mechanical powered Crossbow build

    Post by Geezer on Sat Jul 21, 2012 3:56 pm

    Try an experiment for your paper-clay work. Do a couple of test pieces and stick them in a micro-wave. Start with just a few seconds time, and see how it speeds up the drying-time. Then work up to longer periods.
    I often use microwave to heat/speed up drying-times on small pieces... just avoid putting metals in your microwave, unless you're really fond of sparklies and mild explosions. Geezer

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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Sat Jul 21, 2012 3:59 pm

    I live in Arizona... when I'm NOT at work working on it I take it outside for a few minutes.

    It our dry heat its cured in no time.

    It's just in our A/C office that it takes 30-40 minutes.

    But thanks for the tip!
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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Tue Jul 24, 2012 12:01 am

    Jaw bone end piece update.
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    Basilisk120
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    Re: Official Mechanical powered Crossbow build

    Post by Basilisk120 on Mon Jul 30, 2012 10:03 pm

    Wow this is looking awesome. You have put in a lot of great work. Can't wait to see it finished



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    Re: Official Mechanical powered Crossbow build

    Post by Gnome on Tue Jul 31, 2012 1:50 pm

    Whiteraven, I giggle like a little girl whenever you post updates on this build. This some awesome, creepy, over the top dedication to a vision! Bravo.

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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Tue Jul 31, 2012 2:00 pm

    Thanks everyone. It's an intense build, but working little bits at a time makes it do able.

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    Re: Official Mechanical powered Crossbow build

    Post by downunderrunner on Sat Sep 01, 2012 2:04 am

    whiteraven

    this is an awesome build, enjoying it alot, but i notice there's not been an update for a while?

    hope your ok, and it's still progressing!
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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Sat Sep 01, 2012 11:37 pm

    It's still progressing, just have alot going on. Few updates are in the works, but haven't taken pictures yet.

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    Re: Official Mechanical powered Crossbow build

    Post by downunderrunner on Sun Sep 02, 2012 2:25 am

    ok, thanks for letting us all know, sorry to hear about the difficulties in your life, stay strong brother!
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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Wed Sep 05, 2012 8:20 pm

    Ok, sorry for the wait, but I got some updates.

    Updated the Bone swing arm prototype a bit more, making it fit better and look a little more steampunk.


    Got my crossbow main backbone pieces back from my welder friend. They look great to me.


    And here's how the swing arm will mount and pivot.


    And this is what my work area looks like with 10 things going on at once!

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    Re: Official Mechanical powered Crossbow build

    Post by downunderrunner on Thu Sep 06, 2012 1:16 am

    thanks for the update brother!! sorry to sound impatient, looking great as always!
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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Mon Oct 01, 2012 8:40 pm

    Working on this project still. Smile

    Started a mock up on a quiver for the bolts (arrows) built out of a soda box's cardboard.


    Looked a little too boxy to me, so I hit the Dollar Store and got some supplies... Grabbed 2 aluminum spray bottles, a dog hair brush, some masking tape, and a pair of chicken scissors. All on my lunch-break at work.

    And after a long, NOT busy day I had this...


    And after I put my crossbow bolts (arrows) in it kind of looks like this.


    And yes, the crossbow bolts are hollow stainless steel CHOPSTICKS!! Laughing
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    Re: Official Mechanical powered Crossbow build

    Post by Gnome on Thu Oct 04, 2012 4:19 am

    Stainless steel chopsticks? That's intriguing. Are you planning on putting tips and/or fletching on them, or letting them fly right out of the box? I like that last idea, but I think at minimum some kind of weight would have to be added to the point to keep them flying pointy end first. I immediately started shopping around the net, thinking about using them myself for one of my pistol bows, and found a design with a spiral grip molded into the fat end. Wonder whether that would give enough drag and spin to eliminate the need for fletching.
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    Re: Official Mechanical powered Crossbow build

    Post by Geezer on Thu Oct 04, 2012 6:58 am

    Spiral grip steel combat chopsticks? Sounds like something Jackie Chan would keep in his back posket. Geezer
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    Re: Official Mechanical powered Crossbow build

    Post by Gnome on Thu Oct 04, 2012 10:38 am

    Exactly!
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    whiteraven
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    Re: Official Mechanical powered Crossbow build

    Post by whiteraven on Thu Oct 04, 2012 11:43 am

    I'll do some test shooting from my pistol crossbow and see what mods are needed.

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