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Sicaflex Piston?

Post questions and info about pneumatic (compressed gas) powered cannons here. This includes discussion about valves, pipe types, compressors, alternate gas setups, and anything else relevant.
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Sicaflex Piston?

Unread postAuthor: Mitchza89 » Wed Nov 07, 2007 2:48 am

Howdy spudders.

I wanna make a new piston for my bb gun. The hot glue is giving me the shites, I'm constantly having to lube it up otherwise it doesn't slide n locks up.

I had to idea of making a piston out of Sicaflex. I know that it dries pretty smooth and pretty firm but would it it be good enough to seal against the barrel without using a sealing face made out rubber?
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Unread postAuthor: psycix » Wed Nov 07, 2007 5:51 am

Dont know, but why wont you just make a sealing face?

I dont know how expensive that stuff is but... just try it :D

And if it doesnt seal, make a sealing face on it.
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Unread postAuthor: chaos » Wed Nov 07, 2007 5:56 am

I tried this the other week mate, turned out crap mostly but if ya did it right it would be ace. it turned out crap for me cauz i forgot to lube the mold for it.

what also will play a part is what type of sikaflex ya use because they have a lot of different types, but yer ur smart enough to get one that will suit.

hope it works good for ya mate.

peace
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Unread postAuthor: jrrdw » Wed Nov 07, 2007 5:59 am

Define -- Sicaflex. Does it set up hard, rubbery? I've probly seen this stuff but in different form/name, it just doesn't come to mind. Do you have your gun posted?
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Unread postAuthor: Novacastrian » Wed Nov 07, 2007 6:02 am

Epoxy epoxy sicaflex no EPOXY. :lol:

Edit: are you in Aus, if so i'll make you a piston :twisted:
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Last edited by Novacastrian on Wed Nov 07, 2007 6:04 am, edited 1 time in total.
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Unread postAuthor: chaos » Wed Nov 07, 2007 6:04 am

Novacastrian wrote:Epoxy epoxy sicaflex no EPOXY. :lol:



Oh ok ok JSR jr. and how efficient would that be?
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Unread postAuthor: Novacastrian » Wed Nov 07, 2007 6:11 am

chaos wrote:
Novacastrian wrote:Epoxy epoxy sicaflex no EPOXY. :lol:



Oh ok ok JSR jr. and how efficient would that be?


About as efficient as the co-efficient of friction intends it to be :wink: smart arse :wink:
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Unread postAuthor: goathunter » Thu Nov 08, 2007 7:56 am

Well, considering sikaflex is a caulking I doubt it will be as good a piston as an epoxy one.The only advantage I could see is that you would already have a built in sealing face.But it still wouldn't be as sturdy as your hot glue piston if anything it might seperate were you layered the caulking.Sikaflex is some weird stuff.I don't know if you have it but I would try 3M 5200.That stuff cures a little harder than sikaflex and may be more suitable for a piston.
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Unread postAuthor: jackssmirkingrevenge » Thu Nov 08, 2007 8:16 am

chaos wrote:Oh ok ok JSR jr. and how efficient would that be?


Hey, leave my disciples alone! :D

But seriously, in this case epoxy probably offers a lighter, lower friction solution than sicaflex.
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Last edited by jackssmirkingrevenge on Thu Nov 08, 2007 8:35 am, edited 1 time in total.
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Unread postAuthor: jrrdw » Thu Nov 08, 2007 8:26 am

jackssmirkingrevenge wrote:
chaos wrote:
Novacastrian wrote:Oh ok ok JSR jr. and how efficient would that be?


Hey, leave my disciples alone! :D

But seriously, in this case epoxy probably offers a lighter, lower friction solution than epoxy.


Say that again.
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Unread postAuthor: jackssmirkingrevenge » Thu Nov 08, 2007 8:35 am

:oops:

edited.
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