Pro Blocks

Upgrade your sanding game!
Pro Blocks give you next-level flatness, better control, and less dust with out dust extraction blocks.
If you prep cars, you’ll instantly feel the difference.
Grab a set → problocks.co.uk

If you want cleaner sanding and flatter panels, check out Pro Blocks.
Dust-extraction ready, ergonomic, and available in rigid or flexible versions for every panel shape.
Game-changer for prep.
👉 problocks.co.uk

Selecting the right sanding block for the shape you're working on is just as important as your technique. Here's what to consider when making your choice.
Surface hardness. The block's surface must be completely firm with no give. This is what allows it to cut the surface flat — and it's exactly why polycarbonate is such an effective material.
Rigidity isn't a virtue in bodywork. A good sanding block should flex enough to follow the contours of the panel, helping you maintain correct shapes as you sand. It should yield with light pressure — not too stiff, not too floppy. If anything, most people tend to reach for blocks that are too rigid. Stiffer does not mean better results.
Length. I always say choose the largest block you can use for the panel you are working on. The longest block isn't always the best choice though as you will need enough room to complete full strokes. — finding the right balance takes some experience.
Variety. With polycarbonate blocks, thickness determines flex, and different shapes call for different blocks. Don't try to get by with just one or two. It's completely normal to have 5–10 blocks for a car and to switch between them frequently as you move across different areas. If something doesn't feel right, swap it out until the sanding feels the way it should.
The real secret to these blocks is the material itself — polycarbonate. The handles are designed to be as comfortable as possible so the polycarbonate can do its job unhindered, letting you sand for hours without blisters or hand fatigue.

👉 problocks.co.uk

Do you still wet sand? Yes it’s messy, but we find it’s still the best way to finish primer on parts like this before paint.