expiredcarryme posted Feb 03, 2022 10:00 AM
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expiredcarryme posted Feb 03, 2022 10:00 AM
Dewalt 20-Volt MAX Cordless Brushless 1 in. SDS Plus D-Handle Concrete & Masonry Rotary Hammer + Free 20-Volt MAX POWERSTACK Compact Battery Starter Kit $219
$219
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I use the SDS max hammer for drilling 1-1/2" holes in granite for chemical blasting. Also, for anchoring different diameters of rebar for footings etc. Its a large and heavy tool, and it needs to be for the size of hole it is designed to drill - so you can let the tool do the work, and not have to push on it yourself.
When I wanted to drill 1/4" holes for tapcons or 1/2" holes for expansion anchors to install ledgers, the MAX hammer is just too large and heavy to be practical. Especially on a ladder which is what I had to do for an upper deck ledger. It has to be used with 2 hands.
Tapcons holes can be drilled with a normal hammer drill, but honestly if you have to drill more than 2 holes, you want the SDS plus hammer. It will do it in 10% of the time. Yes, the MAX can use an adapter to use PLUS bits to drill small holes, but its really impractical, again, not what you want more than a few holes. The thing is, for rebar size holes or breaking rock/concrete, you are always drilling down, so the weight of the tool is designed to help. When you do tapcons and expansion bolts, you often want to drill horizontally, and maybe with 1 hand only.
From the engineering perspective, the PLUS chuck is simply too small to survive the forces of MAX bit sizes. Thats why there are no MAX bit to PLUS tool converters - also the PLUS tool won't have enough impact force to drill those MAX bit size holes anyway, so its literally pointless. You CAN get MAX bits to PLUS tool converters, it will work, but again, the shear size and weight of the MAX tool means its very impractical.
I know this very well because I tried, I wanted to save money and use my MAX hammer for everything. But im getting tennis elbow just trying to hold the MAX tool with 1 hand horizontally, let alone trying to hold it in place on a ladder to drill a hole into concrete. Its not worth it. For MOST people, you won't need to drill more than 1" holes in rock/concrete in which case SDS PLUS is the obvious choice.
Sounds like you want to drill large, SDS MAX sized holes, in which case you need the impact energy of a SDS MAX tool anyway, and thats what you should get. And if you then need to drill smaller SDS PLUS size holes where its easy to reach, probably vertically down, and can use both hands, then you can get away with a MAX tool to PLUS bit adapter. But I'd say get both the PLUS and MAX tool for these very different applications.
Sds max to plus adapter. Just no option for plus to max. Both plus and max have there places. I have flexvolt dch773 2" rotary and its a 22lb mammoth beast then flexvolt dch416 sds plus, dch263 sds plus and atomic dch172 sds plus which is more of a luxury then a need. Im using them in construction tho not home use
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