Drilling a square hole

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You blokes have probably seen these. Amazing things. Somebody sent the link to me.http://s76.photobucket.com/albums/j7...eDrill-bit.mp4Yeah, I carry.House keys, wallet, some change, usually a newspaper, maybe a pen.
Reply:Neat !I wonder how expensive and how long those bits would last ?
Reply:Coolness, thanks for sharing.No suprise Asians are doing it.ThermalArc 161STL TIG/Stick (160amp)Lincoln weld-pak 100 (fluxcore)4X6 Enco bandsaw10" skillsaw with metal blade for 45degrees (works)4" grinderWeld for fun. Very rare I do it for Money.
Reply:sort of like a rotory engineLincoln pro mig 180Lincoln Square Wave Tig 300/wp 20/home built water cooler Victor, Purox, Harris, O/A welding/cutting setupsVintage Craftsman drill pressVintage Craftsman/Atlas 12"x 36'' lathe7''x 12'' w/c band saw Everlast 140 st
Reply:New manufacturer . . . old idea . . . H.J. Watts’ 1918 US patent 1,241,176I played with one of them in school about 1970.  Speed and feed rate are critical to a good result.Jim
Reply:Those have been around for wood for a fair amount of time. This gives a better look at what they are. Might be able to make one. Not exactly cheap, like $30 - 80 for wood.http://americanwoodworker.com/blogs/...ill-press.aspxDid a search and did not find any offered for metal yet. Maybe dig some more. Maybe Ebay.Be nice to have for both metal and wood. Suppose the metal ones might also do wood, maybe not the other way around.
Reply:Instructor showed us that same vid in our machining class on Tuesday night..No government ever voluntarily reduces itself in size. Government programs, once launched, never disappear. Actually, a government bureau is the nearest thing to eternal life we'll ever see on this earth! Ronald Reagan
Reply:How does this compare to a rotary broach? I have a Slater rotary broach (http://www.slatertools.com/) that does all kinds of shapes.The square tool in the video is different than a normal broach but it appears the offset is similar. I bet this tool requires less thrust pressure than a broach. It appears much more efficient. Anyone have a link to the tool holder? What other shapes does it do?I wonder it I can use this cutter in my holder
Reply:Pretty cool stuff!Buy American, or don't whine when you end up on the bread line.
Reply:Seen the same idea on a ACVW forum the other day.  Can't seem to find one for sale though.Century Quick Fix  wire welder, Century Infanite Disc Stick welder, Lincoln Pro-Mig 175, Oxy Acetaline torches.
Reply:Originally Posted by forhireHow does this compare to a rotary broach? I have a Slater rotary broach (http://www.slatertools.com/) that does all kinds of shapes.The square tool in the video is different than a normal broach but it appears the offset is similar. I bet this tool requires less thrust pressure than a broach. It appears much more efficient. Anyone have a link to the tool holder? What other shapes does it do?I wonder it I can use this cutter in my holder
Reply:Umm....completely different. Resulting sq. hole is same, but not the method. Originally Posted by CosmicRamblerThose have been around for wood for a fair amount of time. This gives a better look at what they are. Might be able to make one. Not exactly cheap, like $30 - 80 for wood.http://americanwoodworker.com/blogs/...ill-press.aspxDid a search and did not find any offered for metal yet. Maybe dig some more. Maybe Ebay.Be nice to have for both metal and wood. Suppose the metal ones might also do wood, maybe not the other way around.
Reply:THAT is awesome! Kind of reminds me of how a wankel (sp?) rotary engine works.
Reply:That is also shown in Alex Weiger's " The Modern Blacksmith".... I still do not understand how it works... but I trust that it does....Weldandpower Lincoln 225 AC,DC with Briggs 16hp gas engine.WW2 era Miller TIG.
Reply:How about drilling a hex?  We had these tools 30 years ago in the Air Force machine shop.  Requires a guide to work.Russell
Reply:This is a very good visual representation of what is taking place.You need a guide as in the video.http://jackalopefab.com/MM210Synchrowave 200DXMiller XMT350 w/60series feederMiller Bobcat 250 with SGA 100 and spoolgunHTP PlasmaFull Machine shop with everything
Reply:HI For those whom may want to build one to these square hole drills there is a construction article in a British mag. Model Engineer Vol 197 # 4285  27 Oct - 9 Nov.It has a 5 page discription on how to make one.I have a copy but I could not fine it on amazone to post the web info to buy one.have funTom
Reply:Got a scanner???If you can't get it online, they can't complain! Originally Posted by acourtjesterHI For those whom may want to build one to these square hole drills there is a construction article in a British mag. Model Engineer Vol 197 # 4285  27 Oct - 9 Nov.It has a 5 page discription on how to make one.I have a copy but I could not fine it on amazone to post the web info to buy one.have funTom