If your goal is a show car straight finish then the best way to finish sand the final coat of primer is wet sanding by hand with a guide coat. Tools, materials and Lakeside Merch is listed below.
🔥 Sanding Block - 5" rubber sanding block
🔥 Wet Sand Paper - 3M 320 grit - 320-400 or finer is often used when wet sanding primer.
🔥 Scuff Pad - Mirka 18-118-447
🔥 Lakeside Merch and Apparel - https://brothersdesignsmi.com/shop-al...
🔥 Lakeside Discord (pictures and chat about your projects) -   / discord