Crazyjake8493 said:
If you foresee needing to do some chipping and light jackhammer type work, an SDS-max might be the better way to go.
I agree here. The SDS-MAX Harbor Freight tool (HFT) I have does well for the occasional use I give it, and doing demo work with it, the tool has held-up well. It certainly paid for itself in the first bathroom demo job I did. I did use the Harbor Freight bits, and did the entire job with the wide spade bit. Working on the next entire-bathroom demo, I did snap it, probably because I abused it, and I replaced it with a Bosch bit, which is still going strong.
The HFT round-hole drill bits have 4 carbide cutting surfaces, I found them to be acceptable for use in drilling 6" holes, easily and quickly. For me, it seems that vacuuming the dust out allows a faster cut. It also helped to cut-down on the airborne debris in the workspace.
I paid a recommended subcontractor to secure a steel-framed Hardi-board premanufactured 1-car garage to the slab poured for it (hilti threaded driven pins) . He used Dewalt cordless tools, and his drills couldn't do the job. I dunno if they were tired batteries, but watching them struggle, and asking them what they were gonna do to get the job done, and hearing, "continue what we're doing," I fired them on the spot. I used my HFT SDS-MAX to re-drill what they had started, and was done in < an hour.
