Hi
Should the part of the barrel that contacts the piston be sharp or completely flat.
thanks
question
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jackssmirkingrevenge
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Sharp will dig into your seal like a cookie cutter. Completely flat will do the same. What you want is to cut it at an exact right angle then bevel the edges slightly with light sandpaper.
In short:
> - bad
] - bad
) - good
In short:
> - bad
] - bad
) - good
hectmarr wrote:You have to make many weapons, because this field is long and short life
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Novacastrian
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Just how my barrel is for my incomplete pneumatic 
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jackssmirkingrevenge
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...which we would really like to see finished *hint hint nudge nudge*Novacastrian wrote:Just how my barrel is for my incomplete pneumatic
hectmarr wrote:You have to make many weapons, because this field is long and short life
thanks for this informationjackssmirkingrevenge wrote:Sharp will dig into your seal like a cookie cutter. Completely flat will do the same. What you want is to cut it at an exact right angle then bevel the edges slightly with light sandpaper.
In short:
> - bad
] - bad
) - good
I was always wondering it but not asking since I am not building a pneumatic yet.
you want it to make good sealing contact so it dosn't leak, which is easier with a more pointed edge, but you want to avoid cutting through the sealing face. so i would change that analysis slightly:
> - bad
] - fine, but not the best. can work fine.
) - ideal
> - bad
] - fine, but not the best. can work fine.
) - ideal