# The Stain Hewn Shop Notes · https://hewn.build/shop-notes/the-stain AI-drafted, not yet checked: Drafted by Chip, the writing system Hewn runs on Claude, from Hewn's craft corpus. Jonathan Salomons has not read this note yet, and no outside reader has checked it. Read it as a shop note: check a number before you cut to it. Cite as: "The Stain." Hewn Shop Notes, hewn.build/shop-notes/the-stain. Drafted 2026-05-01; AI-drafted, not yet checked. --- Most people buy stain to fix something. The cherry is too pale. The maple doesn't match the walnut. The boards are beautiful but they need to be darker. That's fine. Stain is a real tool. The problem is what happens next. They open the can, brush it on, and get a result that's too dark, uneven, or looks like the wood caught something. That usually means they didn't know which kind of stain they were using. --- **Dye or pigment. Know which one is in the can.** There are two fundamentally different products called stain. Dye dissolves into its carrier — water, alcohol, or oil — and the colorant bonds into the wood fibers at the cellular level. It penetrates the way coffee penetrates paper: deep, transparent, with the grain reading clearly through it. On figured wood it follows the figure. The result is vivid, transparent color. The risk is that dye goes wherever the wood lets it in, and not all wood lets it in evenly. Pigment stain is ground colorant particles suspended in a binder. The particles don't dissolve — they lodge in pores, open grain, and surface irregularities. Pigment sits near the surface, not in the fiber. On ring-porous species like white oak and ash, the open pores grab pigment beautifully. On closed-pore species — cherry, soft maple, alder — there's not much structure for the pigment to find. The color goes on flat and uneven. Most commercial stains are pigment-based. Most powder stains are dye-based. If the can says shake before using, it's pigment. Dye stays in solution. --- **The blotching problem** Cherry is the species most people stain and regret. It has irregular cell absorption — some areas are far more porous than others — and when a thin stain floods the surface, the high-absorption areas go dark and the low-absorption areas stay pale. The result looks like a disease, not a finish. Soft maple and alder behave the same way. These are the species you run into constantly in a BC Interior shop, and all three of them blotch. Pre-stain conditioner is the standard fix. It's a thin sealer that partially saturates the porous cells before the stain goes on, reducing differential absorption. The tradeoff: it limits absorption everywhere, not just in the problem areas. Your final color will be lighter than the label shows. Sometimes significantly lighter. Apply conditioner, wait about 15 minutes, then apply stain while the conditioner is still in the open window. If you let it cure completely, the stain has nowhere to go and the result is worse than no conditioner at all. Oil-based conditioner for oil-based stain. Water-based for water-based. Mixing carriers creates problems you don't want to sort out. The other solution is gel stain. Gel stain is thick — it doesn't flood and penetrate, it sits on the surface and you work it in and wipe back. The absorption characteristics of the species stop mattering as much because you're not relying on absorption to place the color. Cherry, soft maple, alder: gel stain gives more consistent results than any thin stain, with or without conditioner. The tradeoff is opacity. Gel stain doesn't produce the transparent depth of a dye finish. For blotch-prone species on furniture work, it's usually still the right call. For figured wood where you want both depth and transparency, experienced finishers use dye first, then pigment over it. The dye provides color throughout the fiber; the pigment adds dimension in the pores without covering what the dye built. More work, more testing. Worth it on commissioned figured pieces. Not necessary for most shop furniture. --- **The test board is the job** Stain result depends on: the specific species and board, the figure, the sanding grit, whether conditioner was used and how long it sat, the stain lot, and shop temperature. None of those variables are on the label. Test on an actual offcut from the same board. Not a different piece of the same species. The same board, prepared the same way, in the same shop conditions. That result is the result. Anything else is a guess. --- **The question before the question** Before you open the can: what problem are you actually solving? If the boards don't match, stain often makes it worse. It amplifies variation across the board at the same rate, and pieces that didn't match before still don't match after. If you want it darker, try an oil finish first. Oil on walnut or cherry deepens color without the blotching risk and without the variables. If you're matching an existing piece, a close match is realistic. An exact match rarely is. The piece you're matching has been moving for years. Stain is a real tool with a specific use case. The test board is the job. Everything else is prep.