There are three tool options to consider when drilling large-diameter holes in thick steel: twist drill bits, hole saws and annular cutters. 1. Twist drill bits. Especially in steel thicker than ¼", ...
Sumitono Electric's (www.sumicarbide.com) antivibration X-Bars for deep-hole boring have a dampening mechanism that the company says eliminates chatter, and gives the tools long life while providing ...
Four times the holes, four times the trouble. With the fate of repetitive motion injury looming due to the need to drill 1,200 holes, [bitluni] took matters into his own hands and built this nifty DIY ...
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