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  #1  
Old 06-05-2022, 11:19 AM
nevetsw18 nevetsw18 is offline
 
Join Date: Jul 2011
Location: KMHV
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Default Amazon Tungsten Block?

In a quest to upgrade to a Tungsten bucking bar I came across a "1 Inch Tungsten Cube" on amazon for $55.99 (https://www.amazon.com/Tungsten-Coll...l%2C140&sr=1-9) it appears to be for classroom use, but Tungsten is Tungsten right? Does anyone have any experience utilizing/ repurposing these or similar for aircraft use?
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  #2  
Old 06-05-2022, 11:45 AM
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fl-mike fl-mike is offline
 
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You will want something narrower than that.
Be advised that tungsten is really hard to cut. Really hard.
My advice is to pony up for a bar. It will replace pretty much all you other bars except for the rare cases.
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  #3  
Old 06-05-2022, 01:08 PM
nevetsw18 nevetsw18 is offline
 
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Thank Mike, I appreciate the guidance and will bite the bullet. No short cuts to quality.
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  #4  
Old 06-05-2022, 05:12 PM
KeithO KeithO is offline
 
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I am assuming that what is being discussed is Tungsten Carbide ? The same material as lathe and milling machine cutting tools ? Because pure Tungsten is not nearly as hard but still very dense (double that of steel). Tungsten carbide could chip if there is impact. But I'm assuming would be fine if the impact was on annealed aluminum rivets.

If you need to cut Tungsten Carbide then wire EDM is the best and most available method. To remove sharp edges would require a diamond wheel, usually steel with diamond grit held in a nickel plating.
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  #5  
Old 06-05-2022, 08:05 PM
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Ironflight Ironflight is offline
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I’ve actual;ly gotta couple of pieces of Tungsten that were never intended as bucking bars, but work great where they fit. One is a cube, sort of like the OP describes, and another is a cylinder that someone said was a helicopter blade counterweight when they tossed it my way. If its heavy and hard, and fits where you need it, its a bucking bar!

(Note that I also have a set of ACTUAL Tungsten bucking bars that get used most of the time….)
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  #6  
Old 06-05-2022, 08:39 PM
KeithO KeithO is offline
 
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You can buy tungsten carbide rod in various forms from these folks in the USA
https://www.ceratizit.com/int/en/off...bide-rods.html

The products that they offer for stamping and wear parts may be better suited as bucking bars:
https://www.ceratizit.com/int/en/off...amination.html

Direct from the source, no middle men.
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  #7  
Old 06-06-2022, 05:08 AM
MED MED is online now
 
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I donít believe the tungsten bucking bars we use are tungsten carbide. We donít need the high hardness as much as we like the high weight. Depleted uranium would work well as a bucking bar, too.
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  #8  
Old 06-06-2022, 07:17 AM
lr172 lr172 is offline
 
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Quote:
Originally Posted by MED View Post
I donít believe the tungsten bucking bars we use are tungsten carbide. We donít need the high hardness as much as we like the high weight. Depleted uranium would work well as a bucking bar, too.
+1

Tungsten carbide is insanely hard and brittle. It would be a poor fit for bucking bar duty. FYI, I still use high speed steel or cobalt for the mill and lathe in many applications.

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  #9  
Old 06-06-2022, 08:10 AM
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wirejock wirejock is offline
 
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Quote:
Originally Posted by Ironflight View Post
Iíve actual;ly gotta couple of pieces of Tungsten that were never intended as bucking bars, but work great where they fit. One is a cube, sort of like the OP describes, and another is a cylinder that someone said was a helicopter blade counterweight when they tossed it my way. If its heavy and hard, and fits where you need it, its a bucking bar!

(Note that I also have a set of ACTUAL Tungsten bucking bars that get used most of the timeÖ.)
I have one as well. Helicopter blade balance. It doesn't get used often because it's round but the few times it was used, no other bar I had would work. You can never have too many bars!
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I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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