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    PVC couplered BBBB with interchangeable barrels and barrel materials

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    jacko1120

    Posts : 197
    Join date : 2008-12-18
    Age : 23
    Location : Goldie

    PVC couplered BBBB with interchangeable barrels and barrel materials

    Post  jacko1120 on Mon Jun 14, 2010 5:02 am

    Hello,
    A quick write-up on how to put a 15mm pvc coupler onto your BBBB and have a few different barrels to choose from. im sure this has been done before but hey, every write up helps :).

    So first of all your going to want:
    • 1M of 15mm PVC (i got mine from bunnings)
    • A 15mm PVC coupler (from bunnings also)
    • A few different barrel materials (i chose PETG and aluminium)
    • A very strong airtight adhesive, maybe even 2 (on this BBBB i used a super plastics glue my dad had that bonds your fingers instantly, so be carful. on my first BBBB i used this + silicone sealant but just the super glue should be fine)
    • A screwdriver, e-tape and hacksaw/other cutting implement



    Step 1:
    Unscrew all the screws on the shell of the BBBB. Then using a knife/hacksaw/dremal cut the orange piece at the front at the top and bottom.


    Step 2:
    Pull the barrel and airtank out and place on a bench/vice. Cut the black barrel 2mm from where it meets the white plastic of the airtank.



    Step 3:
    Place the 15mm coupler around the barrel and glue into place on the inside, bottom and outside. Leave to dry.



    Step 4:
    While the glue is drying, cut out the 2 tabs so that the coupler can fit into the shell properly. Dont go to overboard though as then you will have to e-tape the whole gun to stop the trigger from being pulled when you pump the gun.


    Step 5:(optional)
    Grab the pump for the BBBB and using hot glue fill each of the holes on the o-ring end of it. This will allow you to fill the tank till you can't fill it no more or it explodes. So be careful.

    Step 6:
    Re assemble the gun and set aside for now. It is time to make the barrels.


    Step 7:
    Grab your M of PVC and mark out the length of each barrel onto it. Cut along the lines and file down the shavings. Then grab your barrel material and wrap e-tape around the middle and each end. The thickness of the e-tape depends on the O.D of the barrel you are using. Nestle the barrel inside the PVC and hey presto, you now have a BBBB that can shoot.

    Comments? Questions? (oh and sorry for crap picture quality, couldn't find my camera)

    splosionman

    Posts : 159
    Join date : 2009-08-05
    Age : 72
    Location : Australia

    Re: PVC couplered BBBB with interchangeable barrels and barrel materials

    Post  splosionman on Mon Jun 14, 2010 10:57 am

    Just to add an alternate method of positioning the coupler. If you leave 1-2 inches (not sure on exact measurements) of the black barrel on, then wrap it in e-tape until you can only just ram the coupler over it and glue it on, it greatly reduces dead space and makes the coupler a lot more secure and straight.
    Hope thats clear enough.
    avatar
    jacko1120

    Posts : 197
    Join date : 2008-12-18
    Age : 23
    Location : Goldie

    Re: PVC couplered BBBB with interchangeable barrels and barrel materials

    Post  jacko1120 on Mon Jun 14, 2010 11:19 am

    Yer perfectly clear.
    It would be a great addition to this mod.
    Bit late for me though

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    Re: PVC couplered BBBB with interchangeable barrels and barrel materials

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