The Rod Bench Rod building, written down properly for once. Published by Wildline.

Why is my rod finish fisheyeing?

Usually silicone contamination — from syringes, monofilament, skin oils or lubricant-carrying thread — though a too-thin coat or over-sanded surface produces the same craters. Most fisheyes fix in place without stripping the rod.

What a fisheye is

Small circular craters where the finish pulled back from a spot, exposing the surface underneath. The film does not wet that spot, so it retreats from it while curing — contamination changes the surface energy, and the epoxy votes with its feet.

Cause 1: silicone, named by the manufacturers

Flex Coat's own tip sheet names the mechanism directly: silicone in medical syringes bought at a drug store, or silicone on monofilament, can cause the finish to fisheye or separate from blank and wraps. Hand cream is the other classic vector — anything silicone-based transferred to the blank by fingers during handling.

One thread type carries a documented version of this risk: Madeira Poly Neon, an embroidery thread adopted by high-end builders, ships with a silicone lubricant baked in for machine tensioners — the importer's own page says the lubricant can repel certain finishes and recommends extra coats of colour preserver. A wrap made with it and no preserver is a named fisheye risk, not a superstition.

Cause 2 and 3: application, not contamination

Epoxy maker System Three lists two non-contamination causes: the coat applied too thin to wet through, and a previous surface sanded too smooth — fine sanding removes the tooth the next coat needs to key into. If your fisheyes cluster after a re-coat of a polished surface, cause three is yours.

Fixing it without stripping

Let the coat cure hard. Sand the craters out with 120–150 grit — coarse enough to reopen tooth — apply another seal coat working into the craters, let that cure hard, sand flat, and recoat to finish. System Three's procedure is for marine epoxy but the chemistry generalises; Flex Coat's rod-specific guidance agrees on the rescue path.

A soft, tacky finish that never cures is a different defect — unequal ratio or short mixing — and Flex Coat's own remedy there is to recoat over the tacky finish, mixed carefully this time, rather than strip.

All fourteen finish and handle failures, including the ones that genuinely do mean stripping, are laid out row by row in our free Epoxy Troubleshooting Card — the whole table, nothing held back.

The store, priced plainly

The answers here are free and complete as answers. What we sell is the whole craft written down in one place:

The Epoxy Troubleshooting Card — Free. The complete 14-entry finish-and-handle failure table — what each defect looks like, why it happened, save or strip. Nothing held back.
The Custom Rod Builder's Reference — $39 once. 118 pages in three volumes: choosing a blank, building it, and recovering from a finish that will not cure.
The Reference + Bench Tools — $59 once. Everything in the Reference plus six bench tools that run offline in a browser: guide-spacing calculator, blank-selection tree, wrap mechanics reference, epoxy card, build log, supplier shipping table.
The Rod Bench monthly — $19.95/month, cancel any time. The parts that go out of date: the supplier shipping table re-checked and dated, new blank and component releases, every Reference revision with a changelog.
The Complete Bench — Lifetime — $199 once. Every volume and bench tool permanently, plus every future revision, new tool and re-dated supplier table. Pay once, never subscribe.

30-day refund on the paid tiers, no questions. Prices checked 2026-08-25.

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