Using a rechargeable drill driver to pierce the steel material by hand
On 2018-12-01 14:28:05
It is possible to drill a lot (500 results) if it works so that it does not knead at right angle to the work material at proper rotation and feed, cutting oil is recommended for center drilling. Considering the overheating of the backing drill for continuous machining, it seems that there is an effect to prevent chip chipping when coming out.
I bought 48 holes in 2.3 tons of mild steel, but I bought oil so as not to raise the temperature, but when I opened 30 pieces, the super steel could not drill out hole. I think that the life is too short. Even made in China it will not break in dozens of holes.
I purchased thought that it would last long because the price was high, but my teeth flew when I opened 4 stainless steel plates (3 mm thick). I wonder if my arm is bad! I immediately purchased other maker items and continued the work, but I opened eight there, but it was fine.
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