Model: Bit - $10.99 and up
This is the bit you want to use to install any of my weldless kits.Be sure to use a oil as a lubricant to keep the bit cool and take breaks after every few steps. See instruction page for more info.
- The small bit goes from 3/16" to 7/8" in 1/16" increments. It has a 9/16" stop which is ideal for my smaller weldless weldless sight kits (WLSL and WLST) and a 13/16 or 7/8" stop for putting in a 1/2" NPT weldless bulkhead.
- The NEW large bit goes from 13/16" to 1-3/8" in 1/16" increments. It has a 7/8" stop for weldless bulkheads and my larger weldless sight kit (WLLTS), a 1-1/8" stop for 1/2" couplings (welded in) and finally a 1-3/8" stop for putting weldless electric heating elements in. Important - this bit cannot be used to start holes. You will need to start drilling with this bit when the hole is already 13/16" or 7/8" as left from drilling with the small bit first.
- For the best value and max hole size versatility, you can get both bit sizes at a combined discount. This gives you flexibity from 3/16 all the way to 1-3/8" in 1/16" increments.
Please note, these bits are not the highest quality units you can buy (such as Greenlee, Klein, or Irwin). However, those high end units also sell for over $40 each. The bits I offer are a great value for someone looking to make less than 10 holes or so. If you keep them cool (let the work and bit cool down after every two steps or keep dipping in oil or water for cooling) and run them slowly, you'll get those 10 holes drilled before the bit is toast. If you want a longer lasting bit, go for the $50 bits. IMPORTANT!! If you spin the bit over and over without seeing a ribbon of metal being cut, you're work hardening the metal you're trying to drill and also dulling the bit. See more info on drilling in the instructions area.
It is highly recommended that you start ANY size hole with a smaller pilot bit approximately 1/8". Step bits are not very good at starting a hole in virgin metal.