Stage 2: Chain Linkages - Precision in Every Link

This week the tube-link bracelet turned into a lesson in how unforgiving small work can be. In theory, the sequence is simple enough: make the tubing, draw the wire, cut the links, drill the holes, assemble the bracelet. At the bench, though, every step tightened the tolerances. By the time I was drilling the links, an error too small to notice on a ruler was more than enough to show up in the piece.

Bench notes from the week: drilling on curved tubing, the tube links lined up in progress, the small army of burrs and bits behind the holes, and the bench where all of it got sorted.

The real challenge was accuracy, precision, and repeatability—only now on a curved surface instead of the flat practice from Stage 1. Tubing does not want to cooperate. It wants to roll. The drill wants to skate. And once a hole starts to drift, the next ones will inevitably reveal the misalignment. Each of the 13 tube links needs four holes, and those holes have to work not only within each individual link, but across the bracelet as a whole. That was the part that fought me all week.

What helped most was letting go of the idea that I had to hit the final size in one shot. The better approach was incremental and corrective. I started with a very small ball burr to establish the location, then used a slightly larger one to refine the mark when needed. From there I worked up through progressively larger drill bits, using each stage as a chance to correct the hole by a fraction before the error became permanent. Final sizing happened with burrs again. Nothing dramatic—just tiny adjustments, made early enough to matter. That was probably the most useful lesson of the week: catch the drift while it is still small, and you can still steer the work back into line.

It also reinforced a rule that is becoming harder and harder to ignore: controlled and consistent beats fast, every time. Speed feels efficient right up to the moment it creates avoidable mistakes. On slippery curved tubing, nothing can float. The work, the handpiece, the drill bit, and the fingers all have to be braced back into the bench pin as one stable unit. If one part is unsupported, the whole operation gets shaky. The work does not forgive that.

That was the lesson this week.

Until next time, back to the bench.