Sanding

Sanding is the process by which a pipe body, once out of rough shaping, is worked through progressively finer grits until it reaches its final surface. However unglamorous it may look, this step takes up the largest share of time spent in the workshop. It's not just a polishing prep either: how finely the surface is worked directly determines how much the briar grain will read afterward.

Grit Numbering Systems

Sandpaper grit numbers aren't universal. On the FEPA (ISO 6344) scale common in Europe, the number is preceded by the letter "P"; on the CAMI scale used in North America, that letter is absent. The two systems give fairly close results at coarse grits but diverge noticeably at fine ones. Because of this, sequences described in different sources can't be compared one-to-one; the "600" grit paper one maker names may correspond to quite a different particle size on another scale.

Building the Sequence

The sequences makers follow don't fit a single mold. Reported practices sometimes start at a coarse grit like 120 or 150, sometimes around 220; at the top end, some stop at 800 and say anything finer is imperceptible to the eye, while others carry on to 1000 and even 1500. What's common is that no large jumps are made between consecutive grits, and each paper is worked long enough to fully erase the marks left by the one before.

The first coarse pass is the loudest step in the sequence, but also the most decisive one. A body fresh off the disc or belt sander may look finished but still carries bumps, flats, and machine marks; making the bowl rim perfectly round, cleaning up the line where the shank joins the body, and checking symmetry are also this stage's job. If the shape isn't settled here, cleaning it up at fine grits becomes many times more laborious.

The Rule of Completeness

The unchanging rule of the sequence is that the entire surface, without exception, must be worked at every grit. On shapes with recesses, carving, or sharp transitions this is tiring work, but even a single skipped spot remains visible at later steps. If a missed scratch only shows up during staining, the whole body has to be sanded again at a coarser grit for the color to come out even — meaning a significant portion of the work has to be redone from scratch.

To reduce this risk early on, some makers are reported to wipe a thin guide coat of stain onto the surface midway through the sequence: the stain stays dark inside scratches and gives them away. The method's known drawback is that some of the stain can leave a mark in the wood's pores; as long as that mark won't disrupt the coloring that follows, the technique is a useful control tool.

Sanding the Mouthpiece

The same approach applies to mouthpiece work. Because even the smallest imperfection stands out much faster on smooth-surfaced materials like vulcanite and acrylic than it would on wood, the sequence is usually carried further to finer grits. Once sanding is complete, the pipe is ready for the final surface finishing — staining and felt-wheel buffing.