What's the difference between a drill bit and a drill bit?
The material of the drill is differentAnd the head of the drill is not the same designThe drill used to drill wood will not drill in, or in the course of drilling, the hole will be burned, resulting in drillingThe drill used to drill iron will also fail to drill in, and the drill will be burned during drilling so that it can not be drilled
There are many differences. For example: different materials; drill design structure (tip, blade, groove, handle, etc.) different; processing methods, processes, etc..Turn left and turn right |
That bit, drill iron is generally the middle point (force, wear to feed); wood drilling is generally three sharp edge, high in the middle and low on both sides (soft wood, such as drill faster, on both sides of the edge can also make the drill mouth flat appearance, also known as plate drilling).
