Announcement: New barrel holding fixture
- Thread starter mitch
- Start date
Marrinan
~ Elite 1000 Member ~
That is slick! Fred
rod
~ Elite 1000 Member ~
Mitch,
You are a very good tool and fixture designer, as well as a top flight engraver, I like the look of this arrangement.
I am a babe in the woods when it comes to long barreled engraving, so this is only a simple observer's question, might there be any advantage for the gun engraver to introduce another degree of (controlled) freedom. For example, with this very nice counter-balance design of yours, could you envisage the barrel not being held directly locked in the ball vise, but instead, your device being held in some way in the ball vise, allowing one of the barrels to slip into a fitted shaft that allows the barrel to be revolved safely upon its own axis, with your spare hand, as engraving takes place?
Rod
You are a very good tool and fixture designer, as well as a top flight engraver, I like the look of this arrangement.
I am a babe in the woods when it comes to long barreled engraving, so this is only a simple observer's question, might there be any advantage for the gun engraver to introduce another degree of (controlled) freedom. For example, with this very nice counter-balance design of yours, could you envisage the barrel not being held directly locked in the ball vise, but instead, your device being held in some way in the ball vise, allowing one of the barrels to slip into a fitted shaft that allows the barrel to be revolved safely upon its own axis, with your spare hand, as engraving takes place?
Rod
Last edited:
BrianPowley
~ Elite 1000 Member ~
Great looking tool! I wish for much success with it.
That's a pretty slick fixture, Mitch. You're a clever guy. Makes me want to engrave a barrel!
~Sam
~Sam
DakotaDocMartin
~ Elite 1000 Member ~
Hornady already makes a whole bunch of modified cases with the primer pocket drilled out and tapped for their overall length gauge. Perhaps if you were to use the same thread as those, it would make that part a lot easier. Just an idea.
http://www.hornady.com/assets/files/LNL-Modified-Cases.pdf
http://www.hornady.com/assets/files/LNL-Modified-Cases.pdf
rod
~ Elite 1000 Member ~
Mitch,
I do take your point about increasing complexity, rigidity, etc., and we do know that a good rule of thumb to keep in mind is:
Reliability is proportional to the inverse of the total number of pieces in our designs !
best wishes
Rod
I do take your point about increasing complexity, rigidity, etc., and we do know that a good rule of thumb to keep in mind is:
Reliability is proportional to the inverse of the total number of pieces in our designs !
best wishes
Rod
DakotaDocMartin
~ Elite 1000 Member ~
I received a reply email from Hornady and this is what they said:
Hornady Mfg. Co. uses a 5/16x36 tpi tap. This is what Stoney Point used before Hornady Mfg. Co. purchased Stoney
mitch
~ Elite 1000 Member ~
- Joined
- Jul 23, 2007
- Messages
- 2,636
"a 5/16x36 tpi tap." boy, they weren't kidding when they said a 'special extra-fine thread'- that's special & extra-fine alright! that's half again more tpi than a standard 5/16-24 UNF. (on an interesting related note of trivial import: did you know MSC sells taps for 1/4"-18, 20, 24, 27, 28, 32, 36, 40, 48, 56, 64, & 80tpi? and all those PLUS a 72tpi in 5/16"? personally, i think that's just asking for fights between design engineers & production engineers...)
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