NitroG20 AirGraver

[Mike Anders]

I just got my new NitroG20 Airgraver and I would like to let everyone know what I have learned so far about it.

The NitroG20 has a lot of power but it's not a runaway. You can do light engraving with it but then turn around and really hogg steel out for inlays. On the steel engraving I did all the engraving with the nitro using a M42 graver. On the copper plate I also used a M42 graver. The bright cuts were very easy to cut. I cut a few bright cuts that were pretty big and wide and the airgraver just went right through the copper. My compressor only delivers .90 cfm at 100 psi and it kept up very well it came on about every 10 to 15 min. and the nitro was idling the whole time. For you CO2 guys you can run the nitro without the idle and it does really well. The copper plate is 2x2" and the steel is heat treated 4130 and the engraving is 1/2" x 4"

If anybody has any questions I will sure try to answer them.

[Steve Lindsay]

Hey Mike, The sample plates look great. Thanks for posting them! The airgraver website was recently updated (link) with this large bore tool. NitroG20 was decided on for the name from the suggestions in the earlier thread, thanks everyone for that. The G20 portion of the name comes from the weight of the piston, which is 20 grams.

I changed the front end on the tool from earlier prototypes so it can now be made to hold larger graver shanks. The standard tool holder will hold 3/32" square and 1/8" round graver shanks as well as other shanks that will fit within a .133" hole. If someone would like the tool to hold 1/8" square and 3/16" round shanks just let me know and that can be done.


Setup for Foot control



Setup for PalmControl



Here are piston weights to help compare the Classic stainless and tungsten pistons to the NitroG20 tungsten piston.
Classic and Artisan stainless piston: 3 grams
Classic and Artisan tungsten piston: 7 grams
NitroG20 tungsten piston: 20 grams
Photo of a Classic tungsten piston together with the NitroG20 tungsten piston

[jlseymour]

Sounds exciting, I gotta try one, "I gotta have one, I gotta try one, I gotta have one", sounds like a song...
Mike looks very good so i may have to try the G20...
Jerry

[KeithPedersen]

I want one too with all the motorcycle parts I have to do.
That tungsten piston in my palm control is doing the job but I guess I could bast through the aluminum with one of the nitros.
Keith

[Mike Anders]

I went back and forth between my Classic with the tungsten piston and the NitroG20, the Classic did really well but the Nitro did everything a lot easier. One example of the finesse and the power is, I did some fine lines and then put 45 flat in and stood the graver up and just went after it and it dug in then I laid the graver down a bit and I popped the biggest chip out that I've ever got. Not that you would ever need to do that but the muscle is there.

I worked with a 901 for 7 years and did a lot of heavy inlays on bits and spurs I'm talking inlaying 20 gauge fine silver into 4130 steel and it did fine but I think the NitroG20 will do it with a lot less effort. I will be doing some inlays like that pretty soon and I will let everyone know how it goes.

[vilts]

Any idea if Nitro would be useful for wood carving too? Has anyone tried?

I did try GRS Magnum for wood, but it really wasn't delivering. Is Nitro bigger and meaner than Magnum?

V

[Steve Lindsay]

Hi Vilts!

Full throttle at 90 psi with the 20g tungsten piston is pretty wild. Do you need the concrete removed from your diveway.

Yes, it works well in wood. Have you tried your Classic in wood? It would be similar but you can take bigger bites. At lower throttle use it for shading. Here is an older video of the PalmControl Classic cutting wood.

[DKanger]

If someone would like the tool to hold 1/8" square and 3/16" round shanks just let me know and that can be done.

Some time back, after purchasing a number of your sharpening templates, I sent you an email asking if you offered a holder for using 1/8" square blanks. Your reply was basically "Why." That question has now been answered. If people are going to use the 1/8" blanks in this handpiece and also use your sharpening templates, they need a way to hold them. So I repeat my question, "Are you going to offer a way to hold them in the sharpening templates?"

[Steve Lindsay]

Hi DKanger, Yes the plan is to have a replacement collet or another metal sharpener fixture available at a later date for 1/8". As soon as I can get time to get to it. I'm hand engraving the first few of the palmcontrol vises. That, along with making the new Nitro is taking my time at present.

[DKanger]

I hope it's sooner rather than later. I've had my templates for several months now and have yet to use them. I made all my H&C graver handles with removable tips using 1/8" square blanks and I did not relish the thought of having to make all new handles. Being able to switch the collets out would be a definite boon.