These work well for smaller conduit but when you get into 1-1/4" and greater trade sizes, especially when you need to get a fitting into the wall, I think you need to go to core bits. I don't think they make spiral bits that big with SDS shanks, but I could be mistaken.
Jason Szumlanski Principal Solar Designer | Florida Solar Design Group NABCEP Certified Solar Professional (PVIP) Florida State Certified Solar Contractor CVC56956 On Mon, Oct 16, 2023 at 10:55 PM Kienan Maxfield <[email protected]> wrote: > Jason, > > I've had good luck with DeWalt's carbide 4 blade bits like this one - > https://www.amazon.com/gp/product/B00004RHF2/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 > > There are other brands that are probably just as good, but I'd look for > carbide and I'd look for the 4 cutter design. > > Thanks, > Kienan > > Green-Go Solar Wholesale Distribution > [email protected] > (801) 631-5584 > ------------------------------ > *From:* Jason Szumlanski <[email protected]> > *Sent:* Thursday, October 12, 2023 4:10 AM > *To:* RE-wrenches <[email protected]> > *Cc:* Kienan Maxfield <[email protected]> > *Subject:* Re: [RE-wrenches] Nuance ground racking > > On that subject, what bits are people using to drill holes through > block/concrete (for 1" - 2" conduit)? We have been using some dry diamond > coring bits we buy online, but they don't seem to last. We have had them > break off at the weld. Wet coring seems overkill for the relatively few > holes we need to make. > > Jason Szumlanski > Principal Solar Designer | Florida Solar Design Group > NABCEP Certified Solar Professional (PVIP) > Florida State Certified Solar Contractor CVC56956 > > > On Wed, Oct 11, 2023 at 10:49 PM Kienan Maxfield via RE-wrenches < > [email protected]> wrote: > > I own the Dewalt 2 inch 60V rotary hammer you linked and it is totally > awesome. You’ll be blown away by it. It’s totally worth it. > > You might want to make sure to just use the huge 12ah batteries that it > comes with… might be a lot of power demand fire smaller 60V batteries… but > I regularly use mine with the smaller batteries and I’ve never had a > problem. > > I mostly use it for drilling 2 inch holes in 8” concrete walls for > bringing conduit into basements and crawl spaces. It goes through amazingly > easily. Everyone who has tried mine has been totally blown away… probably > about 8 professionals and contractors. > > Thanks, > Kienan > > *Green-Go Solar Wholesale Distribution LLC* > > *[email protected]* > > *(801) 631-5584(Cell)* > > *www.distribution.solar* > > On Oct 9, 2023, at 8:33 AM, Dave Tedeyan via RE-wrenches < > [email protected]> wrote: > > > Hi all, > > I am going to try out the Nuance OSPREY PowerRack as a ground mount option > that does not require an excavator. I am wondering two things about it: > > 1. Does anyone have experience with this, and do you like it? > > 2. What drill do you use for the drive rod? > It seems like the Milwaukee 2" SDS max drill is the standard - > https://www.milwaukeetool.com/Products/5342-21 > I am wondering if it is possible to use a cordless drill though. DeWalt > makes both a cordless and corded version that claim to have the same impact > energy as each other, although both are less than the Milwaukee Drill. > Milwaukee has 19.9 ft-lbs of energy and the DeWalt ones have 19.4 Joules, > which is 14.3 ft-lbs of energy. > Cordless Kit - > https://www.dewalt.com/product/dch773y2/60v-max-2-brushless-cordless-sds-max-combination-rotary-hammer-kit > Corded Kit - > https://www.dewalt.com/product/d25773k/2-sds-max-rotary-hammer > > The cordless drill is tempting because I already have a bunch of DeWalt > equipment, and it would be nice to avoid needing a generator or some very > long extension cords. > > Thanks! > -Dave > > -- > [image: Logo] <https://www.sungineersolar.com/> > Dave Tedeyan, P.E. > Owner | Sungineer Solar > p: he | him | his > a: 1653 Slaterville Rd. | Ithaca, NY 14850 > w: www.sungineersolar.com <http://www.sungineersolar.com/> > c: (607) 270-0370 > _______________________________________________ > > > > > >
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