What the hell cut this?

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Is this laser drilled? face in pic is 2”x1”

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Reply:"Drilled" usually indicates a round hole, I do not see a hole,,As far as those letters, IMHO,, they were stamped in somehow.
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I was thinking laser drilled as perforation and then punchedlaser drilling can get pretty small but I’d never seen it used like thisi don’t think it a straight punch because the material thickness and the lack of deformationthe Deformation present in this pic looks like it was due to a punch being used after another initial processLast edited by TexasTight; 06-09-2021 at 02:37 PM.
Reply:I was thinking stamped, but those little pieces holding the blank inside the A are pretty thin. Maybe laser or water jet?Miller a/c-d/c Thunderbolt XLMillermatic 180 Purox O/ASmith Littletorch O/AHobart Champion Elite
Reply:Waterjet is possible too but I’ve never seen one make quite that precise of a cut. From what I’ve seen, a waterjet going to make an incision at least a mm. The letters on this piece are 1/4”x1/4”. Whatever making made those cuts is very small. Thinking more and more that it was a laser but I’m wondering if anyone knows specifics.
Reply:You would be amazed at what a toolmaker from 1979 could do with punch tooling.With an exact, specific, correct clearance between the punch and die, the punched part would far exceed the accuracy of a laser cut part.Our toolmakers made electrical contacts that were so accurate, you had a hard time measuring any tolerance variation  among 100,000 parts,,If you want to see accurate,, go to Richmond VA and tour a cigarette factory.Those machines have tooling that the heat treatment oven alone cost over $1million,, I saw a prototype cigarette machine in 1990,, hit the go button, then immediately hit stop,,the machine would fill a pallet size box (like 48" X 48") over a foot deep with cigarettes,,That machine was considered "slow",, as it only made prototype cigarette samples.Think how accurate the tooling was to be able to operate at that speed,,
Reply:A better question is why.I seen water jet cutting that good very costly. A good die maker can make dies too  but again why. Dave

Originally Posted by TexasTight

Is this laser drilled? face in pic is 2”x1”
Reply:Maybe EDM?Yeswelder MIG-205DS(3) Angle Grinders at the ReadyJust a hobbyist trying to improve
Reply:Looks like part of the 2nd A is still there. Ultra fine water Jet maybe. I'm guessing Mag Mate gets a lot of those pieces made so would need to be done by something that is fairly quick rather than a 1 off type experiment to see what would work.
Reply:Edm is plausible too but isn’t that more expensive than waterjet, lasers, and/or a die?
Reply:So there are waterjets that can cut that fine? That’s pretty amazing
Reply:Local steel supply offers Laser cutting that could do that.They have a display but no images on their website.Ed Conleyhttp://www.screamingbroccoli.com/MM252MM211 (Sold)Passport Plus & Spool gunLincoln SP135 Plus- (Gone to a good home)Klutch 120v Plasma cutterSO 2020 benderBeer in the fridge
Reply:I can get close to that with my cnc plasma. Otherwise laser or water jet.
Reply:It's far from unusual in this modern world... A high definition CNC plasma, waterjet or laser could all do that with similar results.Murphy's Golden Rule: Whoever has the gold, makes the rules.
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Originally Posted by Shootr

Maybe EDM?
Reply:would think either laser or water jet. what do the outer edges of bracket look like? this may indicate what was used assuming the same company cut, bent and lettered it.don't think a die would leave the tiny center of the A in place .
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Originally Posted by Munkul

It's far from unusual in this modern world... A high definition CNC plasma, waterjet or laser could all do that with similar results.
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I’m thinking this one was stamped.Anyone know how they do this?Miller a/c-d/c Thunderbolt XLMillermatic 180 Purox O/ASmith Littletorch O/AHobart Champion Elite
Reply:Don't think it was stamped but that's an interesting 90* fitting for the regulator. I'm thinking a CNC plasma or something along those lines.
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Originally Posted by TexasTight

Is this laser drilled? face in pic is 2”x1”
Reply:A Fiber Laser can easily do this. I'm wondering how old the part is. It it's 20 years old or older the mystery remains.Thermal Arc 320SP ( Lorch )Cobra PythonsThermal Arc 300 AC/DC  ( Sanrex )ESAB 301i AC/DC  ( Lorch )Thermal Arc 161STL  ( WTL )Thermal Arc 190S  ( Sanrex )Cut Master 82, 42. Cut45 ( WTL )Victor Gas Apps.Boxes and boxes of welding crap.
Reply:I think it is laser cutting.
Reply:I was wondering how  the “retest” marking was made on thepropane tank because I thought it was done during retesting.After thinking about it, it seems it was probably done beforethe tank was assembled, and would be easily stamped in a press.Last edited by jpump5; 06-24-2021 at 05:22 AM.Miller a/c-d/c Thunderbolt XLMillermatic 180 Purox O/ASmith Littletorch O/AHobart Champion Elite