Just from the vibration and the strain of holding the drill. It shouldn't last very long.
I have worked with tools over 40 years and never seen an iron drill bit. Most common drill bits are HSS -High Speed Steel.
drill, needle, fingers, braces
The drill pipe is placed in the wellbore to make a connection at the surface, typically at the rotary table or a similar connection point. This allows for the alignment of the pipe with the floating or rig equipment, ensuring a secure and effective connection. Once aligned, the drill pipe can be threaded or mechanically locked into place to facilitate drilling operations.
Of course and then one can "tap" the pinging to make a connection
Vernon Dursley worked as director of a drill-making company called Grunnings.
To properly screw in wood for a secure and stable connection, first, choose the right size and type of screw for the job. Pre-drill a pilot hole slightly smaller than the screw diameter to prevent splitting. Then, drive the screw in straight and flush with the surface of the wood using a screwdriver or drill. Be careful not to overtighten, as this can weaken the connection.
The standard length for a new API drill collar is 31' shoulder to shoulder with the pin threads adding an extra 6-8 inches depending on the type of connection.
For screws, you should use a pilot drill bit to create a small hole before driving in the screw. This helps prevent the wood from splitting and ensures a more secure connection.
To attach wood to concrete effectively, you can use concrete screws or anchors, a hammer drill, and a drill bit suitable for concrete. First, drill pilot holes into the concrete using the hammer drill. Then, insert the screws or anchors into the holes and tighten them to secure the wood in place. This method provides a strong and durable connection between the wood and concrete.
The SDS system is used on drills that drill through stuff like concrete. The bit has a standard size male part with four grooves in it. The drill chuck has four fingers that mate with the grooves on the bit shank. To change bits you just pull the old one out of the drill with your hand and push the new one into the chuck. It's very slick. They even sell a Jacobs-style jaw chuck adapter for it, so you can use all your non-SDS bits with an SDS drill.
SDS Plus drill bits have a stronger grip and are more suitable for heavy-duty drilling tasks compared to regular SDS drill bits. The key difference lies in the design of the shank, with SDS Plus having a more robust connection to the drill.
You might need to drill it out, chipping away at it. (Had a similar experience myself - it worked after a lot of patience!)