I have a disk sander with 60 grit paper but it tends to get gummed up by the gloss of the guitar when Im sanding. What is the best way to sand or strip the paint off of a guitar that is being refinished?

Whatever you do don't use chemical stripper. I've seen this stuff cause peeling, and blistering on wood that was stripped that way.
60 is pretty rough paper. How thick is the gloss?

Im not sure exactly, pretty thick. This was my first guitar and Im just painting to decorate my house. Its a fender squire. I have a bout 1/10 of it sanded but that took 3 pads to do.

if it is a polyurethane, or polyester finish sanding will take forever, and you run the risk of driving some of the finish into the wood.

I use a heat gun, and a scraper to strip those finishes.

You will need to be very careful. I always round off the corners on the scraper/putty knife. and you need to keep the gun moving, and far enough away from the surface since it is easy to scorch the wood.

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I'm not an expert, but I play one on the internet.

And if you are going to try to strip inside the cavities with the heat gun, do those first, while the paint is still on the front and particularly the corners, to protect them from burning...

Cheers - C

and also, stripping poly sucks no matter which method you try.

i have done a few, and I am still nervous, and extra careful doing it.

never burned one, but I have seen where people with a lot more experience than I have had trouble, and had accidents.

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I'm not an expert, but I play one on the internet.

Have refinished more guitars than I care to remember. You can use paint stripper to hurry the job along you just have to wipe it down with a damp cloth several times afterward. Use 2 part automotive paint (the paint & the seperate hardener) any thing out of a spray can just won't last. After you have painted the guitar SEVERAL coats (sanding between coats w/ 800 to 1200 grit sandpaper) the last thing you do is take a 2 part clear coat (finish & hardner) & put that on to seal the paint. You can do the same with the clear coat w/ 1 coat-sand-next coat-sand.... You can build the finish up til it looks like you dipped it molten glass.

If you do use stripper make sure it's water based.

Oh yeah. Good point.