Good Things

• Quite strong
• made from easily available materials

Bad Things

• The pipe can break where it meets the socket especially after wear from the pipe wrenches
• The teeth can also break off especially if rock is met. If anything breaks off it can stop the drilling continuing downwards
• It will become clogged if not used with the smaller bit first

Your Ideas

MSABI weld pieces of flat bar between the socket and pipe to strengthen it

Other Ideas

Click here to draw your ideas or add your comments or files below