I just finished sandblasting my frame and used 100 lbs of blasting sand. I did the frame, motor, springs, and axles. Think it was like 15$. The only part I couldn't get was directly under axles, since I still have the motor in, but will address later.
Do note that I used a commercial air compressor that u can rent from most rental places. I would highly recommend this, it will save u aggravation, time, and will be able to go nonstop. Bout 8 hrs total time, and when ur done u have a air pressure that's able to actually blow the sand out of the frame. I was really surprised at how much it put out with just opening a ball valve, I mean hold on TIGHTLY.... Nozzle was hot to touch when I was done
I wrapped a ez-up with painters plastic and on the ground, and was able to recycle 5 gallon bucket full, though I didn't use it