I have a Dewalt 20v XR hammer drill with a standard chuck.?ÿ I also have a corded 13amp Bosch combination hammer drill with a spline chuck. (yes, I tote around a small generator, but you can't beat the power of a corded drill!)?ÿ I'm ultimately wanting to?ÿset mag nails into rock.?ÿ A 1/4" bit?ÿwould likely do the job.?ÿ I've tried?ÿusing typical masonry bits from Home Depot, but they burn up and are useless within a minute.?ÿ Every time I search for a durable bit I find ones only with the SDS plus or max?ÿshank.?ÿ I also find bits for the larger spline chuck but the bit size is way to large.?ÿIs there an adapter for my dewalt so I can use SDS plus bits??ÿ Or is there a 1/4" bit with a spline shank out there somewhere??ÿ I know I'm not the only one out there wanting to set mags in rock, so how do you all do it?
I've found these reasonably durable
I use them in a 18v Milwaukie?ÿ Hammer drill. Milwaukie does have a 18v HD with SDS chuck, and Home Depot has 1/4" bit for that..
Milwaukie is in Oregon. Milwaukee is in Wisconsin which is where the tool company headquarters is. The tools are now made in Mississippi or China but not Wisconsin.?ÿ
I have one of their cordless hammer drills and bit and it works very well. Not sure what kind of rock your drilling so your mileage may vary.?ÿ
I've used the Bosch BlueGranite Turbo bits in concrete and really like them.?ÿ I'm not sure how well they work in rock, but they go through the aggregate in the concrete just fine.?ÿ I also used a water bottle and drip water into the hole as I'm drilling it to provide some lubrication and cooling.?ÿ I use an 18.5 V Craftsman Drill, which isn't a hammer drill, but I've not had a problem.
I use 18v/20v DeWalt SDS Rotary Hammer Drill.
It will go thru rock and concrete much, much easier than using regular hammer drill.
There is a huge advantage in using a SDS bit - the chuck uses ball bearings to hold it so it slips back and forth -this allows most of the energy to be sent to the bit
A standard drill chuck has to move with the bit, so less energy is transferred and takes longer to drill
I use a Milwaukee 18V battery version now, but also have a corded which does have more power - Buy the best you can afford and a small inverter off the truck will work sometimes with a cord - just match the wattage to the tool
I also use it to set Bernstein copper plugs and the bit needs the biggest SDS tools since you are turning a 3/4 inch bit - I burned up a smaller tool before I figured that out - They did repair it, but I only use if for the small holes now
I buy a bit that is a little larger and grid it down, so the MAG fits tight - you can also use a piece of tie wire to make up the difference - I bend a piece into a U, so both sides bite - old carpenter trick I saw
I also blow out the hole with a can of air as I go - water can also help cool the bit
Milwaukie is in Oregon. Milwaukee is in Wisconsin ....
There is another Milwaukie? In Wisconsin you say? Huh, how about that? But why do they spell it wrong?
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After much research and gas driving around town looking for the correct chuck adapter, I eventually learned the adapter I was hoping to find doesn't exist. (going from a standard keyless 3 jaw chuck to a SDS plus bit) So, I bought the Bosch blue granite turbo bit and tried it on a boulder on the side of the road. Holy cow! That little thing actually works great! I think I drilled 2 holes in about 45 sec.?ÿThanks ARMeyer. And, the cost is negligible... about $15 for a pack of 5 (1/4in).?ÿI'm sure the SDS plus platform is much better, but for drilling 1/4" holes, a basic little dewalt?ÿhammer drill seems to handle the job just fine! ....for now ??ÿ
I have stuck an SDS bit in a regular drill chuck and used it that way before. Our bridge supervisor said he does it quite often. It will fit in a 3/8 chuck but a 1/2" chuck works better. If your chuck is not deep enough to get past the flutes, you could use a cutoff wheel on a grinder and cut the flutes off.?ÿ It may have just been the brand of bit that the supervisor gave me that works, I haven't bought any since then. I am usually drilling concrete, no hard rock here.
Try it and see.
James
After much research and gas driving around town looking for the correct chuck adapter, I eventually learned the adapter I was hoping to find doesn't exist. (going from a standard keyless 3 jaw chuck to a SDS plus bit) So, I bought the Bosch blue granite turbo bit and tried it on a boulder on the side of the road. Holy cow! That little thing actually works great! I think I drilled 2 holes in about 45 sec.?ÿThanks ARMeyer. And, the cost is negligible... about $15 for a pack of 5 (1/4in).?ÿI'm sure the SDS plus platform is much better, but for drilling 1/4" holes, a basic little dewalt?ÿhammer drill seems to handle the job just fine! ....for now ??ÿ
You're welcome!?ÿ I hated using standard masonry bits - they would burn up and the hole they left was too large.?ÿ I saw those in Home Depot one day and figured I'd try it out.?ÿ I couldn't believe it - it's like a wood bit for concrete!?ÿ Happy to pass the info on ??ÿ
I have found the Bosch bits to be way better than others, I have a Bosch battery powered SDS hammer drill and that combo make short work of setting 1/4" nails in pavement, rock, concrete, etc.. Without the hammer action turned on, slow progress, but a good bit with hammer action is almost too easy. I believe it is Lowe's carries the Bosch brand of bits?