nice pics and welcome
Posts by tufual
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i placed it in an 2 1/2 ton engine hoist to test it and it broke a 1x4 pitch pine board with no problem . from my use of the hoist it felt like around 450lbs of force [ my best guess ]
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that is also a sample of the 8mm [ 5/16 ] tool steel rod that i will be using to make the spear shafts . not stainless but stiffer than stainless and cheap enough to replace if bent . the supplier also said that i could have it heat treated to make it spring steel .
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these are the parts i carved out of stainless steel flat stock . it was cut from 5/16 x 2'' flat stock .the housing shown is just for mock up , the real one will be made from 3mm flat stainless ,but the trigger internals are the ones that will be used ,[ATTACH][ATTACH]6743[/ATTACH][/ATTACH] although i have not made the safety and line release yet . any suggestions are welcomed .
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these alloys are made for metal dentures , they are strong [rigid] but can be bent many times before breaking to enable denture adjustments they will also NEVER rust [ once left a piece of alloy in a drain that released soap and chlorine from a washer for 7 years and it kept its mirror shine . however even though i cast these parts i decided not to machine them because it is easier to cut the trigger out of flat stainless stock . i would be posting pics on my pitch pine speargun thread .
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thanks for info , been trying to figure out a way to drill it . thanks
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whats edm ?
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the sear was cast well but was way to hard to drill [ burnt 3 brand new titanium drill bits and 2 tungsten bits ] will try a different alloy .
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thanks
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Rick told me he doesn't sell any trigger mechs just the whole gun .
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there are is a trade off between visibility and stealth
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since i found out i cann't import it today , i decided to make it . because i am also making my own shafts as well ,[ATTACH][ATTACH][ATTACH][ATTACH]6726[/ATTACH][/ATTACH][/ATTACH][/ATTACH] i made the mock up to take only the 5/16 round stock , so i only have to make the retaining notch on the rear of the shaft not a full american style notch system . this is only the mock up made from 3/16 mild steel flat stock . i basically copied Neptonic's tuna mech [ my version ] . i can't cast the real one from cobalt alloy because my tools can't melt that much metal so i will source local stainless plate from a supplier . feel free to post constructive criticism as well as any mods.
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Guys just spoke to my customs broker and she told me that spearguns are considered a grey area . You actually need a permit to import spearguns or speargun components but because it is for fishing most times customs let you pass . however if you meet an officer in a bad mood they do have the authority to confiscate them therefore a permit from the police department is necessary for importation . she said it is a relatively easy permit to get , not like a firearms permit . i therefore decided to try to make my own trigger mech , i do have access to jeweler style casting tools . going to try to cast them out of Chrome Cobalt alloy which does not contain any iron so it is not a stainless steel . it is extremely strong and will NEVER rust [ same alloy in hip transplants ] . when i get started i will make a new thread with pics . although if possible can any one post pics of their trigger mech internals . thanks .
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