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hammer ? stainless steel ?
Dan Merrick wrote: I am concerned that results of a few days long experiment can't be extrapolated to a multi-years expected life span. |
timothy fisher wrote: I would worry more about the abrasions caused by a waffle-faced framing hammer than iron contamination. It's fine for a nail head, but such abrasions can really impact the strength of material under load. |
Sean Lambert wrote: What testing have you witnessed that leads you to that conclusion? What is "can really impact"? |
Adam Pequette wrote: Just what I learned in my mechanics of materials class in college. I haven't seen any specific tests of anchor bolts hit with a waffle hammer, but I have seen tensile strength tests of steel bars with various kinds of marring, and a surprisingly small sharp ding in a steel bar can halve its tensile strength. |
Sean Lambert wrote: This would be true if you were hitting the bolt with the hammer on the shaft of the bolt where it is under load. hitting the end of the bolt where there is no stress in the bolt will have zero affect on the tensile strength of the bolt. |
Ken Noyce wrote: HowNot2 on Youtube tested (properly installed) wave bolts and several broke on the hanger part of the bolt. I don't agree with your assessment that there is no stress in that part of the bolt. |
Sean Lambert wrote: Sorry, I was thinking we were talking about stud bolts. Yes, hammering a wave bolt in with waffle face hammer could weaken the bolt since you are adding points of high stress concentration onto what is essentially the hanger of the bolt. |
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BD Yosemite Hammer is back in stock. "Forged stainless steel head". Not sure what grade. https://www.blackdiamondequipment.com/en_US/product/yosemite-hammer-1/ |
J- Ru wrote: Interesting. This is a pretty significant redesign of the handle. I’m glad to see they are once again including the shoulder-length sling, since for a while they had stopped. I wonder if it is weighted the same/swings the same as the previous generation. |
J- Ru wrote: Ordered last night! Most I’ve spent on a single piece of climbing hardware in a minute… |
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I have the Petal Tam Tam. I like it. SS, built in hex wrench head, light weight. https://www.petzl.com/US/en/Sport/Anchors/TAM-TAM |
randy baum wrote: I thought it was not stainless..... where did you get that info? None of the literature I have or looked for says what alloy it is. |
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Sorry, I assumed it is SS. I've used it for years. Bolted or rebolted dozens of routes. No rust or other evidence to suggest it is not SS or a similar non-marking/rusting alloy. |
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No need to apologize! I just am curious, cause I would like to know. Seems strange to not have that info available anywhere.... |
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If all you need is a hammer, it's $30 on Amazon: https://www.amazon.com/dp/B09FJ55VK3 Mine hasn't rusted yet. |
kenr wrote: In the Pacific Northwest we're sorry to report that it absolutely DOES matter if you pound stainless nails with a non-stainless hammer. Personal experience: That seemingly harmless blunder resulted in corrosion well within a year--on new construction--in a seaside town. :( |
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Since this has already been necro'd... if your hammer isn't stainless, you could always overlay stainless on its face. Options exist for TIG, MIG, fluxcore, or stick welding processes. ER309 is popular for dissimilar metals. ER312 is good for that too and stronger. I imagine both would be pretty soft compared to a proper piton hammer (ie Dammer, at 50 HRC). Maybe you could overlay 309 or 312, then overlay a harder or hardenable stainless over that and go through heat treatment... |
