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Tethrd One Sticks Gen 2

boyne bowhunter said:
No worries on the Chinesium joke, I would prefer all stuff sourced in the US. I'm just a realist who recognizes the cost impacts associated with that.

6061-O UTS 18ksi max, TYS 8ksi,
6061-T6 UTS 45ksi min, TYS 40ksi min

Difference is VERY significant.
Click to expand...
Yea that’d do it haha.
 
boyne bowhunter said:
No worries on the Chinesium joke, I would prefer all stuff sourced in the US. I'm just a realist who recognizes the cost impacts associated with that.

6061-O UTS 18ksi max, TYS 8ksi,
6061-T6 UTS 45ksi min, TYS 40ksi min

Difference is VERY significant.
Click to expand...

is this why i've always thought 'if they made platforms with the same stuff and methods as 'biners, then we could have way lighter stuff?'
 
Ok, without improvements of heat treatment or fatigue training,

What does it mean for testing the steps to an acceptable standard and returning them to customers with confidence at 125/55mpa?
 
Plebe said:
Ok, without improvements of heat treatment or fatigue training,

What does it mean for testing the steps to an acceptable standard and returning them to customers with confidence at 125/55mpa?
Click to expand...
If it was what boyne said with a temper being missed then there is no way to material test it without damaging the stick since that testing requires stretching a small rectangle piece of the material until failure. Typically you would have MTRs (material test reports) which would tell you the properties, astm spec etc. if you don’t have that you could test the stick and see if the stand-off breaks and then just replace the stand off. Too many considerations honestly.
 
gcr0003 said:
If it was what boyne said with a temper being missed then there is no way to material test it without damaging the stick since that testing requires stretching a small rectangle piece of the material until failure. Typically you would have MTRs (material test reports) which would tell you the properties, astm spec etc. if you don’t have that you could test the stick and see if the stand-off breaks and then just replace the stand off. Too many considerations honestly.
Click to expand...

ah, i see....... :grin:
 
Plebe said:
Ok, without improvements of heat treatment or fatigue training,

What does it mean for testing the steps to an acceptable standard and returning them to customers with confidence at 125/55mpa?
Click to expand...

gcr0003 said:
If it was what boyne said with a temper being missed then there is no way to material test it without damaging the stick since that testing requires stretching a small rectangle piece of the material until failure. Typically you would have MTRs (material test reports) which would tell you the properties, astm spec etc. if you don’t have that you could test the stick and see if the stand-off breaks and then just replace the stand off. Too many considerations honestly.
Click to expand...
Again, the scenario is strictly conjecture of one possible explanation on my part. I have zero connection with Tethrd and absolutely no real information on how the steps are made, it just struck me as one reasonable possible explanation.

IF it is heat treatment the condition of the material might be able to be verified with a pretty benign hardness test. The issue is whether or not the material is thick enough to get a correct indention on. That said, an accurate test would require the equipment necessary to perform one.

Edit, From a 50,000 ft level, hardness testing is done by pressing an indenter of a known size into the material using a known force and then measuring the size of the dimple left behind. This dimple is typically less than the size of the tip of a typical number 2 pencil so it'd be pretty benign to the stick function.
 
boyne bowhunter said:
Again, the scenario is strictly conjecture of one possible explanation on my part. I have zero connection with Tethrd and absolutely no real information on how the steps are made, it just struck me as one reasonable possible explanation.

IF it is heat treatment the condition of the material might be able to be verified with a pretty benign hardness test. The issue is whether or not the material is thick enough to get a correct indention on. That said, an accurate test would require the equipment necessary to perform one.

Edit, From a 50,000 ft level, hardness testing is done by pressing an indenter of a known size into the material using a known force and then measuring the size of the dimple left behind. This dimple is typically less than the size of the tip of a typical number 2 pencil so it'd be pretty benign to the stick function.
Click to expand...

Well, that sounds much kinder on them.
 
Well I sent an email minutes after the recall email went out. Still have not heard back from them. Have a hunt planned and opens on September 9th. Looks like I will be on backup sticks. What pisses me off is the 2 loose steps on brand new sticks. I just want to wash my hands of these things. Guess I will look at doing 3 EWO ultralights and a 3 step aiider for the same weight. I did tell them at this point I want a refund since they were never used. Until I get this figured out I cant run out and spend a bunch more money on sticks.


Here is some more entertainment. This what 2 of my 4 sticks did right out of the box.
 
Well some of your saddle/treestand equipment manufacturers use welding techniques with 6061-T6 aluminum…. Which kills the temper essentially turning that 6061-T6 into 6061-0
 
enkriss said:
Well some of your saddle/treestand equipment manufacturers use welding techniques with 6061-T6 aluminum…. Which kills the temper essentially turning that 6061-T6 into 6061-0
Click to expand...

are they aged?
 
enkriss said:
Well some of your saddle/treestand equipment manufacturers use welding techniques with 6061-T6 aluminum…. Which kills the temper essentially turning that 6061-T6 into 6061-0
Click to expand...
I welded on my own t6 platform to make it a real platform. No worries about bending. I know I weakened it. But if it is heat treated after welding there would be no compromise.
 
Mopar1169 said:
I welded on my own t6 platform to make it a real platform. No worries about bending. I know I weakened it. But if it is heat treated after welding there would be no compromise.
Click to expand...

Particularly in this alloy, with a flat aging curve, the parent metal could very slightly increase in strength from what little I understand of it
 
enkriss said:
Well some of your saddle/treestand equipment manufacturers use welding techniques with 6061-T6 aluminum…. Which kills the temper essentially turning that 6061-T6 into 6061-0
Click to expand...
Around the heat effected region, yes, which may or may not be a critical structural component of the part.
 
I really don't think they are machining steps from blocks of billet.....

Welding 6061t6 doesn't leave the metal with no heat treat after the welds complete...heat affected zone is a real thing but that t6 to t0 is misleading...try to keep in mind not all welders are created equally also....so the greenhorn welding the piss outta it on high heat may have a weld that looks good but got too hot and reduces the strength

But there's no welds here so it is not relevant
 
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