Astro Pneumatic Tool 409 Quick Change In-Line 4" Cut-Off Tool

This thing has become the go to tool for cutting straight lines in metal. Super easy to control and follow out traced lines. Very clean cuts.

Very Powerful 4" by 3/4 HP Pneumatic Cut Off tool. Astro Part # 409. I've had time to run this tool for a better tool review. Simply said it is kick butt powerful. Didn't bog down even though I got into it with some thick metals. Really pleased with the grip, performance and fit and feel. My hands are worn tough and calloused and I'm sure some mechanics know what that means, we loose some feeling in our hands now and again. This cut off tool is solid in the grip and easy as heck to use and I like the Quick Change disk feature, A Lot! It's Hard Work - Made Simple. If you're looking for or thinking of getting a new Cut Off tool - give this guy a shot. You will like the warranty coverage too. Astor stands by their tools.

I appreciate the prior reviews as I was not surprised by the performance. I've used Astro pneumatic tools and led lights for years and they make quality stuff. I do personal car restoration and repair. I have a 5hp 2 stage Quincy compressor (forget the SCFM ratings) and I need about 80# on the gauge for this to go through 1/8" mild steel sheet. It DOES take a bit of time BUT it does clean cuts IF you don't dig into the piece. The 4" disk also helps, IMO. This replaces my ancient HF side cutters which are quicker but not as easy to control as the Astro. Overall, excellent tool for me.

I've been using angle grinders forever for cutting body panels, but this is sooooo much better. Great quality product and well balanced for me. Just be aware that you need a decent compressor to keep up with it. I run a 60 gallon, 175psi Quincy and it kicks in pretty often when doing long cuts.

Works fine, but had no torque. I run 150psi and this unit stalls out a lot. Hopefully it needs some break in time. Been through 2 wheels so far with not much change. Multiple oilings also.

This cutoff tool is able to grind through virtually any material. I used it on galvanized stainless, and it was zipping through without breaking the cutoff wheels. It is far superior to 3In cutoff wheels, and it generates high rpms to cut through the steel as if it wasn't even there. And yes, itdoes save you time and money over less expensive 3 in cutoff wheels that snap every few minutes. I cut 3 pieces of metal with this tool on one disk, and I had snapped 12 disks on the other cutoff wheel.

Stopped working after 2 1/2 years of use, didnt use it that much. Junk. Speed was good, but stopped under any load, lightish pressure only.

Cuts nice straight lines through exhaust pipes and with the easily adjustable guard I can get the whole way around the exhaust pipe while its still attached to the car, making installations of new mufflers fast and easy. And makes VERY short work cutting sheet metal to down size. Only downside I can think of is that it goes through cutting discs fast, so you should have a large supply on hand.

Good tool. Light and compact for tight areas

good to handle

so here is the problem. I went to use the tool for masonry cutting. Most 4" blades have the knock-out center so you can use either a 5/8' bore or 7/8" bore saw. Although the tool will accept a 5/8" bore if you attempt to use one of these blades it will not tighten onto the tool as it will only tighten onto the knockout ring. then of course the blade will free-wheel on to the blade knockout ring. the tool needs to increase the size of the inside shaft and outside bushing so as to be able to tighten onto the saw blade and not onto the knockout ring. severally limits the blades you can use.

Poor quality, the protection carter has broken