Random Orbital Sander

No, the revolution is to fast as it will burn the paint off .

This sander uses 6" sticky back sandpaper. It can also use hook and loop discs.

This sander uses 6" sticky back sandpaper, and you can also switch out the backing pad with a hook and loop style for velcro-type sandpaper. Ingersoll Rand offers a variety of different attachments and accessories. I recommend checking the manufacturer's website for specific parts and accessories compatible with the 300G model.

the tool come with a flat thin wrench that loosens a nut, see instructions below. https://www.ingersollrandproducts.com/en-us/power-tools/edge-series-tools/sanders/300g.html

Loosen central bolt, remove pad, replace, tighten bolt... you're back in business! ;-)

If u want use it continuously I would suggest at least a 60 gallon compressor, I have a 60 gallon that puts out 12cfm at 90psi and this sander still taxes my compressor.

Any compressor capable of 40 CFM @ 90 PSI will work. The advantage of a larger compressor with a larger tank is, it will not need to cycle on so often. These can be run on relatively small compressors. However, the small compressor will need to stay on almost constantly, which is noisy and causes premature wear. Some small compressors will "thermal off" if they get too hot from constant running. A good rule of thumb for compressors is, always buy twice what you need. In other words, take the air-tool with the highest input requirement, double that, then choose a compressor in that range. That is only a rough estimate and does not need to be exact. Another helpful tip here is: Always check the manufacture's specifications and manuals. Those are available online for just about every tool nowadays. The Home Depot website also provides links to many manuals on product spec pages, so they're even easier to find fast. Money-saving tip: Consider the application. If you plan to use only one tool at a time (as in a small one-person shop) then you can reduce your overall air supply capacity. In larger shops (with multiple users at several stations and with multiple air-outlets) a larger capacity compressor is a good investment. Practical tip: When selecting a LARGER compressor for a large shop with many outlets from a distributed air source, the efficiency of the system comes into play. Any air-leaks around nozzles or fittings will reduce efficiency. So, we need to make sure all fittings are tight-and-right to maintain adequate air flow. That prevents your compressor from working too hard and provides optimum performance from your air-tools. Teflon "plumber's tape" is inexpensive. So is any liquid detergent that we use for revealing leaks. These set-up and maintenance procedures take less than two minutes per fitting... WELL worth the time and effort! If we check and service our systems once a year, it pays off in lower energy costs and higher efficiency. That also means you do not need to buy too much compressor for your application, so that simple cheap service regimen saves money up-front and for years to come. Hope that helps! It's really not too complicated when you think about it. I just offer these thoughts from practical experience. Good luck! ;-)

You are correct. That spec is probably a typo. I believe the real spec is closer to 40 Cubic Feet per Minute, not 4. I did some quick napkin calculations based on 1/4" interior hose diameter with 4 CFM at 90 PSI.. That would barely be enough to turn the disk, much less do any meaningful work. My experience with this and others like it shows, you CAN use a small compressor, but it stay on almost constantly. In a confined space that noise may be uncomfortable. For all practical applications, a larger compressor is better. I run mine with a 10 gallon 1/4 HP compressor at 110PSI with good results.

yes you can switch out the backing pad with hook and loop for Velcro type paper

There is nothing in the instructions regarding switching out the back plate.

Yes! Ingersol makes a full spectrum of different attachments and accessories for every abrasive need. Visit their website to learn more details: https://company.ingersollrand.com Just be sure to follow directions for installation and operation, especially suggested speeds. That's because speed, size, abrasive grit and the material being abraded all factor in to the heat equation, and heat is the crucial problem we try to avoid to prevent poor finishes. I should also point out that, most professionals just buy a dedicated sander for special needs because these are inexpensive compared to electric sanders. That's one of the benefits of air-powered tools. The compressor provides power so we don't have to buy another motor for each tool. That allows users to switch entire tools as fast or faster than switching abrasives with hook & loop pads. I hope that helps you get want you want for good results and maximum efficiency!

No it does not, it only has a variable speed trigger which does work very nicely. But you can add on an aftermarket air flow regulator if you want to. I used mine for years with just the variable speed trigger and it worked just fine for me, occasionally I would turn down the pressure at the air regulator I had on the wall that my air hose connected to but not very often because the variable speed trigger on it is really nice and works great.