|
|
Post by sheltie on Oct 22, 2013 18:12:52 GMT -5
I have a hammer drill that I use to break up rough that is too large to fit into my 16" saw. My problem is in not being able to find a 1/2" SDS drill bit that the tip doesn't become flat after one or two uses. I've not been able to find anything recommended for anything harder than concrete at places like Home Depot and Ace Hardware. I even asked the seller of the drill if they have anything and they don't.
Does anyone have any recommendations as to what drill bit I need and where to buy one?
|
|
|
|
Post by jakesrocks on Oct 22, 2013 18:23:03 GMT -5
You might check mining supply dealers on ebay.
|
|
|
|
Post by orrum on Oct 22, 2013 18:33:19 GMT -5
Do what the trackhoe operators do for the teeth on their bucket. Get a welder to hard surface it, I dont know the correct welding rod to use but a good pro welder would. They dig rock and wear the teeth off very fast if not surfaced.
|
|
Mark K
Cave Dweller 
Member since April 2012
Posts: 2,816 
|
Post by Mark K on Oct 23, 2013 20:01:34 GMT -5
You have to get the good bits. Apparently some bits have carbide and some do not.
I have had good luck with mine.
|
|
|
|
Post by sheltie on Oct 24, 2013 7:39:52 GMT -5
You have to get the good bits. Apparently some bits have carbide and some do not. I have had good luck with mine. Do you have carbide tips? Where do you buy them? |
|
|
|
Post by catmandewe on Oct 24, 2013 9:06:21 GMT -5
Denny you need the carbide bits and you need several of them, the reason the bits fall apart is heat so if you keep switching bits out and letting them cool before you use them again they will last a long time. I usually use between 6 and 12 bits to drill a hole, depending on how deep it is, and keep rotating them until I finish.
Tony
|
|
Mark K
Cave Dweller
Member since April 2012
Posts: 2,816
|
Post by Mark K on Oct 24, 2013 11:32:51 GMT -5
Denny you need the carbide bits and you need several of them, the reason the bits fall apart is heat so if you keep switching bits out and letting them cool before you use them again they will last a long time. I usually use between 6 and 12 bits to drill a hole, depending on how deep it is, and keep rotating them until I finish. Tony Winner Winner Chicken Dinner!! |
|
|
|
Post by sheltie on Oct 24, 2013 16:32:55 GMT -5
Denny you need the carbide bits and you need several of them, the reason the bits fall apart is heat so if you keep switching bits out and letting them cool before you use them again they will last a long time. I usually use between 6 and 12 bits to drill a hole, depending on how deep it is, and keep rotating them until I finish. Tony Wow! No wonder mine went flat. I just used one bit until it went flat, which didn't take all that long. |
|
Mark K
Cave Dweller
Member since April 2012
Posts: 2,816
|
Post by Mark K on Oct 24, 2013 18:05:27 GMT -5
My bits are 5/16 and I pull them out a lot and make sure the crap comes out. I am able to drill one hole without switching most of the time, but my stuff drills fast. If it drills slowly, I start switching bits because out in the middle of nowhere, because there are no drill bit stores around.
|
|
