Members zuludog Posted February 10, 2015 Members Report Posted February 10, 2015 Surf the Net for 'compass cutter' Quote
Thor Posted February 10, 2015 Report Posted February 10, 2015 Regarding the DIY punches. Will the edge stand up better if hardened? Can they be hardened at all? If I'm putting a 3/4" pipe in a vise will that work out to a 1" slot punch, or am I on the wrong track? Quote
Members billybopp Posted February 10, 2015 Members Report Posted February 10, 2015 I use one of these for big holes in leather, or big round pieces for that matter. http://www.amazon.com/9911-CMP-1-Compass-Circle-Cutter/dp/B000BK7NWC/ref=sr_1_1?s=arts-crafts&ie=UTF8&qid=1423595151&sr=1-1&keywords=olfa+compass+circle+cutter Bill Quote
Members capsterdog Posted February 11, 2015 Members Report Posted February 11, 2015 I would use my gasket cutter Quote
Members BIGGUNDOCTOR Posted February 11, 2015 Members Report Posted February 11, 2015 In regards to hardening them. 1st conduit has too low of a carbon content to harden, but it could be case hardened. 2nd conduit is galvanized, which is zinc plating, and the fumes that it gives off when heated are toxic. 3rd they are so inexpensive that when one becomes unserviceable you just replace it for pennies. Quote You laugh at me because I am different. I laugh at you because you are all the same.
Members Dwight Posted February 11, 2015 Members Report Posted February 11, 2015 Regarding the DIY punches. Will the edge stand up better if hardened? Can they be hardened at all? If I'm putting a 3/4" pipe in a vise will that work out to a 1" slot punch, or am I on the wrong track? Honestly, Thor, . . . I don't remember, . . . but if you do make slot punches, . . . use a piece of flat stock inside the conduit, . . . you can cold hammer it and make the sides really nice and parallel. IIRC, . . . the 3/4 conduit makes a little over a 1 inch slot punch, . . . and the 1 inch makes almost a 1 1/2 inch punch. I don't mess with trying to harden or case harden them, . . . the zinc coating can screw up your lungs bad if it is burned with a torch or if it gets too hot some other way, . . . and anyway, . . . they sharpen so quickly & easily, . . . Most electricians have some laying around, . . . or you can go to a big box store, . . . get a stick of 1/2, 3/4, 1, 1 1/4, 1/1/2, . . . they're all 10 feet long, . . . should last you several years, . . . and should be less than the price of one fancy store bought punch. May God bless, Dwight Quote If you can breathe, . . . thank God. If you can read, . . . thank a teacher. If you are reading this in English, . . . thank a veteran. www.dwightsgunleather.com
Thor Posted February 11, 2015 Report Posted February 11, 2015 Thanks for the feedback. You're absolutely right about the zinc poisoning. I forgot about the zinc plating. The electrician part is only true for North America. Over here here it's plastic if above surface and only in commercial buildings. Usually they are in the walls due to building code. Sometimes things suck... I will have to get some plumbing pipes or ask the plumber for some scrap pieces. But that'll work and thanks a million for the advice with the insert. I wouldn't have thought of that. Quote
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