What compressor do I need for this sandblaster?

It runs at 70 to 150 PSI with a 90 PSI average, so you need a compressor that holds that pressure while blasting. Small pancake units will run out of air quickly; a larger tank with high CFM output keeps the flow steady.

What media can I put in it?

It takes standard abrasives from 46 to 100 grit, including sand, steel grit and glass bead. Match the grit to the job: coarser for heavy rust, finer for lighter cleaning and finish work.

How much media does the hopper hold?

The gravity hopper holds 18 oz, about 600cc. That is enough for spot work and small parts, but expect to refill often on larger surfaces.

Does it work for removing paint and rust from car panels?

Yes, on small areas such as rust spots, seams and welds. For a whole panel or heavy scale, a pressure-tank blaster or a cabinet is faster and more consistent.

Is it gravity feed or siphon feed?

It is gravity feed: media drops from the top hopper into the air stream. That generally gives a more even flow than a siphon gun that pulls media up from a jar.

What safety gear should I wear?

Abrasive blasting throws grit and dust, so wear eye protection, a respirator and gloves. Work outdoors or with good ventilation, and keep bystanders clear.