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Between not sinking the all the way and misfiring, the tool is more trouble than it's worth. The gun misfired and misfired and misfired some more despite changing nail types (I bought nails at Home Depot AND the ones on the Amazon detail page with no difference).
I was excited to avoid the hoses all over the place and the sound of the compressor over my stereo. The description says it shoots 3 1/2" nails.
I purchased this nail gun for a roofing job that required a total reframe of the sagged structure. I ended up having to go back over the entire structure with my framing hammer and spend 30-45 minutes setting all the nails.When the framing was complete, I thought I'd be home free with the sheeting nails at 2 3/8".
It does shoot them, but only 20% actually go in all the way. The depth adjustment was as deep as possible and I tried everything to get the nail to fully lodge into the new lumber.
After the gun stopped firing completely, I quit and hand nailed the rest of the sheething.The reality with this gun is that a good framer can hand nail faster than this gun can shoot nails. I returned it and purchased a basic Dewalt pnuematic framer and have had much better success.I wouldn't recommend this gun to anyone unless you enjoy frustration, slow results, and the constant desire to throw this tool across the parking lot.
The gun works well, is plenty powerful, the 3-1/2 inch ring shank limitation is known, so I work within its capabilities. I've had this unit for 2 weeks now, doing some roof and wall framing. Granted, it doesn't bump fire like an air nailer, but that's not a requirement for me as I'm a methodical type, so an extra 10-seconds to nail off a row of studs is not an issue. I find you have to teach yourself the right amount of pressure it takes to enable firing, and I don't give it a second thought now. VERY pleased with the convenience of no hose and 40-lb compressor to lug upstairs.
I so far have gone thorough 3 of them with no hiccups from full to empty canister. The solution.
I would take out the gas canister, press it manually a few times, then reinsert it. This gun gave me a lot of headaches.it would fire a few nails, then nothing.
For some reason the gas metering valve would stick or clog, and not supply enough gas for each shot. The gun would shoot well for a while, then nothing again.
I found that the problem was with the Hitachi brand gas. Red canister Paslode gas.
This thing is a great tool, no regrets as long as I use Paslode gas.
I've been a framing contractor in Ca for over 18 years and I have never been dissappointed with Hitachi. It just won't shoot. I thought this was going to be a sweet little tool that could save me a lot of time on the job. Not so with the NR90GR nailer. I've replaced the gas rod multiple times, I've charged the battery, I've taken it to a tool repair twice, and it still doesn't work. Terrible. It's notorious for great, dependable products. If you have the skills and the timing of a jungle cat that's been trained by a ninja, you might get it to fire.
The gun had been a bust right out of the box. It didn't even get through one strip of nails. I was wrong and as a consequence very dissappointed. I'm sticking to the hoses until Hitachi comes out with a new and improved model.
I have a machine shop and make high tech products, so miss-tolerances, I just simply cant tolerate.Said all this, I was afraid what I am going to get from this gun, how I am going to perform with it, and is the idea of having a nail gun (opposite to regular hammer) really worth all the hassle, learning curve and other troubles on the way. Changing/feeding new ones is a snap. I am not a carpenter and I can not stand working with 2x4 what is actually 1.5x3.5" - but not precisely (it is sometimes 1 7/16" x 3 7/16" what makes me crazy). This is my first nail gun ever. Sturdy plastic case is worth the money alone.My friend, who is wood worker for a living and told me about portable nail guns, helped us with the sheeting. For some people is not enough of nails in the gun (1.5 line max) but that is not an issue for me.
Safety pressure is just enough to warn you and ask you for correct position.
Not to mention, hose-less, and some really negative comments about this product and the whole portable idea.Not only that this gun is precise tool, but anybody can operate it.
Big hook (collapsible) is square shaped - to fit over 2x4, is perfect helper to rest the gun on the truss.
I am not a "wood lover" (for building structure), and buildings I make are out of concrete, brick+mortar and steel.
As I said, it is really precise tool, didn't stop working not a single time, fired every nail perfectly where I wanted.We framed a roof (what I never did before) in a snap.
Perfectly balanced in your hand, no kick back (even with 16d nails) fast operation.
Somebody who commented that this gun as a hard to press/engage is either really weak (my wife used it with no problem) or have malicious intentions towards Hitachi.
Not having the hose to pull you down on the top of OSB on the roof, HUGE advantage.I have to say that the carrying case is perfectly organized, for 2 fuel cells, battery+ charger and some 7-8 rows of nails to carry around.
He never had hose-less one before, million of "normal" ones, and was just impressed with this Hitachi.He is getting one from me as a present, for the help, but even more for the favor he told me about them.As always, Amazon had the best possible price, no shipping charge, and it came in the snap.
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