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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Hydraulic Punch hole size question
Hi Gang -
In the process of finishing the hydraulic punch and have a question on tooling. I have to build a railing (steel) and want to use 1/2" SQUARE bar for the stiles (vertical) that pass through a rail (horizontal) 2" wide x 1/4" thick flat stock Should I punch with a 1/2" square punch or go up to the 9/16" punch. The intent is to weld around the bar when in position. Does a 1/2" punch actually make a 1/2" hole or is it a little bigger? Also, what are the tolerences on typical steel bars (when they say 1/2" is it really 1/2")? Always drilled and never used a punch before so am a little unsure. Thanks in advance... Tom PS... What else can I do with a hyraulic punch? :-) |
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