Yooper's latest activity
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YYeah, that's MT3 alright! The 1/2" thread at the end isn't for a drawbar; quite the opposite in fact. It's for a flat-head bolt. When...
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YWow - that's a whole bunch of things I wouldn't have thought of. Thank you. I went ahead and made a 5/8-11 outside to M10 x 1.5 inside...
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YOther cutting tools, c'sinks, c'bores, flycutters, boring heads, tap alignment tools, various pins/drill blanks for picking up holes...
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YThat was my first thought - an insert in the 5/8 thread with a 10mm internal thread. Insert & drawbar hardened, of course. The only...
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YSome older motors don't have adequate insulation or cooling capability. I don't know that you can tell from the terminals but the rating...
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YYooper reacted to Lil Foot's post in the thread Pistols and rifles and threading barrels.......ohhh my!!!!! with
Like.
My favorite machining related saying: "Precision is an attitude, not a skill." -
YYooper replied to the thread Pistols and rifles and threading barrels.......ohhh my!!!!!.You are absolutely right! This one is better (worse) than the first one. Chair vise, disassembled way more than he had to, and he forgot...
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YYooper reacted to Runs With Scissors's post in the thread Pistols and rifles and threading barrels.......ohhh my!!!!! with Like.
I don't have the capability of "hardness testing", so I will run up to the local ALRO metals and grab a couple of bars of 4140 to play...
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YYooper reacted to lynnmor's post in the thread Pistols and rifles and threading barrels.......ohhh my!!!!! with Like.
4140 steel is available in annealed and heat treated. It machines rather well up to 44 Rockwell C. You should test the hardness of...
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YYooper replied to the thread Two extremes.That’s just cool as hell!
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YYooper replied to the thread New old tools.Love that new machine smell even if it’s not new!
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YYooper replied to the thread Pistols and rifles and threading barrels.......ohhh my!!!!!.This is why I get nervous at the range when someone shows up that I don’t know.🤦♂️
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YYooper replied to the thread Pistols and rifles and threading barrels.......ohhh my!!!!!.4140 is common for steel barrels and 416 is common for stainless barrels that are advertised as such. McMaster stocks both. I agree with...
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YYooper reacted to ken erickson's post in the thread Pistols and rifles and threading barrels.......ohhh my!!!!! with Like.
A couple of things, 1. The "head" of the mandrel only has to be larger than the diameter of the bore to keep it from continuing on...
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YYooper replied to the thread Pistols and rifles and threading barrels.......ohhh my!!!!!.I prefer a radius thread relief so I don’t create a stress riser, or put more plainly, a place for a crack to start. But to answer your...