Milwaukee Electric Tool 48-89-9209 Electric Step Drill Bit, No 9, Silver metallic
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Unlike many other step bits, Milwaukee's are made in the United States. The issue with Amazon is that it's subject to counterfeiting. I've run low voltage at one of their manufacturing facilities in MS in the past.
A conduit can be made with this. 7/8" hole is needed for conduit of 1/2" and a 1" hole is needed for conduit of 1" The hole needed for a 3/4" conduit should be an inch and a half wide.
The SDS system does not work.
Plastic and light metals will pass through it, but it is designed for plastic.
Selected User Reviews For Milwaukee Electric Tool 48-89-9209 Electric Step Drill Bit, No 9, Silver metallic
Any material that is thick would be difficult to use this way, because the hole would just be a cone. Previously I had heard good things about some of the cheaper tools, and now I'm glad I paid a little bit more and got a good one Tools can be very important if they are of high quality. Thus far, I have only used it a handful of times, but it seems to be durable. It's the best tool I've ever used.
In addition it is a far better option than the cheaper ones. You will save money in the long run, not to mention your time and frustration from dealing with a junk bit. (Such as this) If you plan on using it more than once, then just purchase a quality bit the first time. Oil will help you keep it for a long time.
It cuts through wood or metal with no problems and very little resistance.
I have used a lot of brands in the past, but Milwaukee's bits last the longest. However, drilling mild steel will dull them faster than drilling stainless In addition, you shouldn't overheat them as you would with any other bit.
It is definitely beneficial to drill a pilot hole first. It is difficult for me to drill with bits that slip. Nevertheless, this one held on until the very end.
Stainless steel is easy for them to pierce, I think it's good alternative to a drill for those jobs.
Over and over again, it does what it is supposed to do.
Use low speed and do not use too much stainless steel when cutting.