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What to do about that glue!

Mods vintage Air Blaster Glue Separation Solvent Weld

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#1 Foammunition

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Posted 24 May 2016 - 10:33 AM

Hello again everyone...

 

So I'm tearing into some mods... I recently thrifted a Nerf Airtech 2000 ($2 dolla no holla) and want to modify the barrels to accept modern darts by removing the AR's and posts, as well as plugging the over-pressure relief valve, but in order to do so the way I want to (cleanly) I have to disassemble the blaster.

Unfortunately, the shell section that the plunger rod passes through is solvent-welded (as described by Drac in his vids) to the shell and is not two-piece.

In his videos Drac mentions methods for separating solvent welded parts (aka the "boiling water" method) but I have yet to see anyone elaborate on how this is done or demonstrate it aside from crudely prying things apart. I'm also interested in modding a Demolisher and again this would be useful in this regard.

Can anyone tell me how to separate this without damaging the gun/part? What about scoring the part in-line with the shell halves so it will separate, rather than breaking it loose?

Thanks in advance,

McNugget


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#2 flyingchicken

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Posted 24 May 2016 - 11:05 AM

There are a variety of ways to open that part of the blaster. If you want to do it cleanly, I would suggest scoring and cutting through it (as you said), using an X-acto knife with careful cuts. It takes a little while, but the end result is super clean.

A dremel cutting wheel does the same thing quicker, but probably not as cleanly. 

 

Dipping glued parts in boiling water has been widely suggested, but has been hit or miss with me. 

 

AT2Ks are underrated and spectacular blasters; have fun modding it! 


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#3 The2ndBluesBro

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Posted 24 May 2016 - 11:27 AM

All it is is literally dipping that part of the blaster in boiling water, and taking it out periodically to check. The glue will break down long before you damage the plastic.
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#4 Foammunition

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Posted 27 May 2016 - 09:18 AM

All it is is literally dipping that part of the blaster in boiling water, and taking it out periodically to check. The glue will break down long before you damage the plastic.


I saw a video (Bay Area Nerf, maybe?) where they submerged a Hammershot for five minutes, melting the gun entirely... by the time they tried to pull the gun apart with two vehicles I realized they were being facetious.

Even so, I don't want to ruin my 2K... unfortunately I can't get the barrels off to be able to cut where I want to until the glued piece is removed.

I'll try the dipping method... thanks for the tips guys.


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#5 DjOnslaught

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Posted 27 May 2016 - 11:19 AM


I saw a video (Bay Area Nerf, maybe?) where they submerged a Hammershot for five minutes, melting the gun entirely... by the time they tried to pull the gun apart with two vehicles I realized they were being facetious.

Even so, I don't want to ruin my 2K... unfortunately I can't get the barrels off to be able to cut where I want to until the glued piece is removed.

I'll try the dipping method... thanks for the tips guys.


Solvent welding works by changing the chemical bonding of the plastic so the pieces rebound together, heating the plastic and inserting the water will break those bonds and allow the method to work, just monitor it closely
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#6 The2ndBluesBro

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Posted 27 May 2016 - 01:46 PM


I saw a video (Bay Area Nerf, maybe?) where they submerged a Hammershot for five minutes, melting the gun entirely... by the time they tried to pull the gun apart with two vehicles I realized they were being facetious.

Even so, I don't want to ruin my 2K... unfortunately I can't get the barrels off to be able to cut where I want to until the glued piece is removed.

I'll try the dipping method... thanks for the tips guys.


Just dip as little of it as you can in the water and you should be good.
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#7 FoamFlingingFoamFarmer

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Posted 28 May 2016 - 11:42 AM

You should just be safe and watch it as it boils, taking it out maybe every 20-30 seconds. Obviously don't leave it boiling for five minutes.


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#8 Foammunition

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Posted 30 May 2016 - 07:46 AM

Solvent welding works by changing the chemical bonding of the plastic so the pieces rebound together, heating the plastic and inserting the water will break those bonds and allow the method to work, just monitor it closely

 

 

Just dip as little of it as you can in the water and you should be good.

 


 

You should just be safe and watch it as it boils, taking it out maybe every 20-30 seconds. Obviously don't leave it boiling for five minutes.

Awesome, thanks guys... I wasn't sure if this is a legit method, but I will give it a go. Worst case scenario I'm out a couple bucks (and a well-functioning AT2K)  but I'll be careful.
 


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