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All About Guns What's your weapon of choice, and why? Discuss the beloved speargun here! |
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01-11-2018, 01:31 AM | #1 |
Sam G
Join Date: Apr 2012
Posts: 151
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Drilling Harded Spring Carbon Steel Shafts - Heat Treatment?
Hey Guys; How do I heat treat a Harded Spring Carbon Steel to soften it for drilling?
And how do I re-harden it? - If it does need rehardeding - its for a line hole. Also do you think the spear will bend? My guess is not. Thanks Kind regards, Sam
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01-12-2018, 07:00 PM | #2 |
Registered User
Join Date: Oct 2013
Location: Simi Valley
Age: 43
Posts: 642
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Re: Drilling Harded Spring Carbon Steel Shafts - Heat Treatment?
This is not the preferred method but I used it to drill a shaft I shortened for a smaller hole gun.
I put the ended of the shaft over a propane burner, one you would use to deep fry a turkey in the driveway, until it was red hot. I then quenched it. Drilled the hole with a cobalt bit (make sure you center punch first so it doesn't walk off the shaft) and installed the flopper. Completely redneck but it worked. I have since fired that shaft into many of rocks and yet to see a bend but this is on a 60ish CM gun. |
02-27-2018, 12:05 PM | #3 |
Registered User
Join Date: Mar 2015
Posts: 482
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Re: Drilling Harded Spring Carbon Steel Shafts - Heat Treatment?
Chrome Vanadium bit may work
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02-27-2018, 12:38 PM | #4 |
Registered User
Join Date: Sep 2011
Location: San Diego,Ca / Dapitan, PI
Posts: 464
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Re: Drilling Harded Spring Carbon Steel Shafts - Heat Treatment?
Are you drilling the shaft or the shark fin? If its the shark fin i just center punched and drilled mine. Not sure if its the same material or not.
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