How to Make Watercolor Paper

You can buy watercolor paper in a neat little pad, like a normal person. Or you can make your own, like a delightful goblin who keeps a “fiber stash” and gets weirdly excited about screens, felts, and pressing things under heavy objects. (No judgment. I’m literally here to help.)

Making DIY watercolor paper is part art project, part kitchen-science experiment, and part “why is there pulp on my elbow?” adventure. The payoff is real: custom texture, deckled edges, the exact absorbency you like, and sheets that feel unmistakably handmade. In this guide, you’ll learn what makes watercolor paper different, which fibers and sizing choices matter most, and a step-by-step process that works at home.

What Makes Watercolor Paper “Watercolor Paper”?

Watercolor paper has one job: hold a lot of water and pigment without turning into oatmeal. Regular printer paper is basically a sponge with commitment issues. Watercolor paper is engineered (or lovingly coaxed) to be strong when wet, reasonably absorbent (but not too absorbent), and textured in ways that help paint behave.

Three features that matter most

• Fiber: Cotton rag (often 100% cotton) is the gold standard for strength and longevity. Wood pulp can work, but it’s usually less forgiving with heavy washes.
• Sizing: A treatment that controls absorbency so paint sits on the surface long enough to blend, lift, and glaze.
• Surface: Smooth (hot press), medium texture (cold press), or toothy (rough). You can influence this when you dry and press your sheets.

Internal sizing vs. external sizing (a.k.a. the “paint behavior” dial)

Internal sizing is mixed into the pulp so water resistance is distributed through the sheet. External sizing (also called surface or tub sizing) is applied after the sheet is formedoften by dipping or brushingso the surface handles wet media better. Many watercolor papers use a combination, which is why premium sheets can take a beating and still let you lift highlights without shredding the surface.

Materials and Tools

Fibers (choose one path)

• Beginner-friendly: Cotton linters (pre-processed cotton fiber sold for papermaking). Minimal prep, consistent results.
• Budget-friendly: 100% cotton rags (old t-shirts/sheets). Avoid synthetic blends; they don’t break down well and can make weak, fuzzy sheets.
• Experimental: A cotton base plus a small percentage of other fibers (hemp/abaca/plant fibers) for texture. Start smalllike 10–20%until you see how it behaves.

Basic equipment

• Mould and deckle: A screen in a frame (mould) and a matching frame (deckle) to form the sheet.
• Vat/tub: A plastic bin wider than your mould.
• Blender: Dedicated thrift-store blender recommended. Paper smoothies are… not a vibe.
• Couching material: Felts, interfacing, Pellon, or smooth cloth to transfer (“couch”) wet sheets.
• Press setup: A book press is great, but you can use boards + clamps, or boards + body weight + patience.
• Drying surface: Smooth boards, acrylic, glass, or hanging cloth. Each affects texture and flatness.

Sizing options

• Gelatin sizing: Traditional for watercolor; can give excellent surface strength and paint control.
• Starch sizing (wheat/potato/rice): Often vegan-friendly; can help, though some artists find it less resistant to heavy wetting than gelatin.
• Methylcellulose: A plant-based option used by artists; can work as a surface size and has its own feel.

If you’re brand new, don’t stress about doing everything “museum perfect” on your first batch. Your goal is a usable sheet that can handle a wash without instantly feathering into a watercolor crime scene.

Step-by-Step: How to Make Watercolor Paper at Home

Step 1: Prep your fiber

If using cotton rags: cut into small pieces (roughly 1-inch squares). Smaller pieces blend faster and more evenly. If using cotton linters: follow package directions; they’re designed to hydrate and separate easily.

Soak your fiber in water for at least 30 minutes (overnight is even better for rags). This helps it break down smoothly and reduces blender strain.

Step 2: Beat the pulp (the texture starts here)

Add soaked fiber and plenty of water to the blender. Blend in short bursts until the mixture looks like a smooth, milky slurry with tiny suspended fibers. More beating generally means a smoother, stronger sheet; less beating gives a more textured, “rustic” look.

Practical tip: Make a small “test sheet” early. If it tears easily or looks lumpy, blend longer or dilute your vat more.

Step 3: Fill the vat and “charge” it with pulp

Fill your tub with water. Add pulp and stir gently to distribute fibers evenly. The vat should look slightly cloudylike skim milk, not like a swamp. Too much pulp makes thick, uneven sheets; too little makes whisper-thin paper that buckles if you look at it sternly.

Step 4: Pull a sheet with the mould and deckle

Place the deckle on top of the mould. Hold them together firmly. Dip into the vat at an angle, then level out under the water and lift steadily. A gentle shake (front-to-back, then side-to-side) helps interlock fibers and even the sheet.

Let water drain. When the surface stops shimmering and looks matte-wet, you’re ready to couch.

Step 5: Couch the sheet

Lay your couching felt/cloth on a flat surface. Flip the mould onto it in one confident motion. Press the back of the screen with a sponge to encourage release. Carefully lift the mould away. Congratulations: you just made a wet sheet of paper that feels like it could sneeze itself apart. Be gentle.

Step 6: Build a post and press

Stack: couching material + sheet + couching material + sheet, and so on. This stack is called a “post.” Once you have several sheets, press them to remove water and lock fibers together.

• No press? Sandwich the post between boards and stand on it (clean shoes, please), or clamp boards tightly.
• Press time: 5–15 minutes for a first press, longer if your setup is gentle.

Step 7: Dry your sheets (this affects texture)

You have options, and each creates a different surface:

• Dry on cloth (hung or laid flat): More natural texture, slight waviness.
• Dry on a smooth surface (glass/acrylic/board): Smoother finishcloser to hot press if you also press well.
• Restraint drying (on Pellon/interfacing): Helps reduce cockling while keeping a handmade feel.

Let sheets dry fully. Depending on humidity, this can be overnight to a couple of days.

Step 8: Size the paper (the secret sauce)

If you skip sizing, your DIY watercolor paper may act like a thirsty towelpaint sinks in immediately, blending becomes harder, and lifting is limited. Sizing is what makes washes behave like washes instead of instant stains.

Option A: Internal sizing (added to pulp)

Internal sizing is mixed into the pulp before pulling sheets. This can help water resistance throughout the sheet and improve wet strength. If you plan to do a lot of wet-in-wet, internal sizing is worth considering.

Option B: External (surface/tub) sizing (applied after sheets are made)

This is often the easiest method for home papermakers because you can test your paper first, then adjust sizing strength later. A common approach is to dip dried sheets into a warm sizing bath, then press and dry again.

Gelatin sizing: a practical, home-friendly approach

A traditional gelatin size is typically a low-percentage solution (think “light broth,” not “gummy bear”). Bloom gelatin in cool water, then dissolve gently with hot water (avoid boiling). Dip a sheet briefly, let excess drip off, then dry flat. If the sheet becomes tacky or sticks aggressively, your solution may be too strong or too hot.

Vegan-friendly sizing ideas

Wheat starch, rice starch, and methylcellulose are commonly discussed alternatives. They can improve surface strength and reduce feathering, though results vary by fiber, concentration, and how heavily you paint. If you’re aiming for very controllable wet washes, you may need multiple coats or a combination of internal + external sizing.

Step 9: Flatten and finish

Once fully dry, flatten sheets under weight between clean boards or inside a large book. If you want a smoother surface, press longer and dry on a smooth surface. If you want more tooth (cold press vibes), dry on cloth and avoid over-pressing.

Step 10: Test like an artist (because you are)

Don’t guesstest. Try:

• Flat wash: Does it streak? Does it sink instantly?
• Wet-in-wet: Do blooms look pleasing or chaotic?
• Lifting: Can you lift a highlight without shredding the surface?
• Glazing: Does the first layer stay put or reactivate too easily?

Adjust your process based on what you see. Papermaking is basically “controlled iteration,” but with more towels.

Troubleshooting: Fix the Usual Suspects

Problem: Paper is too absorbent (paint looks dull, feathers, or sinks fast)

• Add or strengthen surface sizing (slightly higher concentration or an extra coat).
• Consider internal sizing in the next batch if you paint very wet.
• Beat pulp a bit longer for tighter fiber bonding.

Problem: Paper cockles or warps

• Press longer before drying.
• Dry with restraint (on Pellon/interfacing) or dry on a smooth surface.
• Try making slightly heavier sheetsthin sheets warp dramatically under washes.

Problem: Lumpy, uneven sheets

• Stir the vat more frequently (fibers settle fast).
• Use more water in the vat (dilution improves even formation).
• Blend longer and pull more slowly and steadily.

Problem: Sheet sticks to glass/surface after sizing

• Your gelatin may be too strong, or the sheet may be drying too hot/fast.
• Try a weaker solution, cooler dip, and press gently before drying again.
• Use a different drying surface (acrylic or sealed board) or dry on cloth.

Customize Your Handmade Watercolor Paper

Make it smoother (hot press-ish)

• Beat pulp longer.
• Press firmly.
• Dry on a smooth surface.
• Consider a well-controlled surface sizing step.

Make it more textured (cold press/rough-ish)

• Beat pulp slightly less (still well-formed, just not ultra-refined).
• Dry on cloth.
• Press less aggressively.
• Try subtle inclusions (tiny fibers) for a handmade lookbut keep inclusions minimal for painting performance.

Deckled edges (yes, they’re supposed to look like that)

Deckled edges happen naturally in hand papermaking. If you want more dramatic deckles, avoid trimming and handle sheets gently during couching and drying. If you want cleaner edges, trim after the sheets are fully dry and flattened.

Safety and Cleanup (Your Future Self Will Thank You)

• Use warm water carefully when mixing sizingavoid boiling gelatin.
• Watch for slippery floors. Pulp + water = accidental ice rink.
• Rinse screens promptly so fibers don’t dry into the mesh like permanent lint art.
• If you use a blender, dedicate it to papermaking (or clean it obsessively and accept that your smoothies may become “textured”).

Conclusion

Making your own watercolor paper is equal parts craft and control: you choose the fiber, tune the sizing, and shape the surface to match how you paint. Start simplecotton fiber, a basic mould and deckle, and a surface sizing testthen tweak one variable at a time. Before you know it, you’ll have a stack of handmade sheets that feel personal, paint beautifully, and make store-bought pads quietly nervous.

Experience Notes: What It’s Like to Actually Make Watercolor Paper (and What I’d Do Differently Next Time)

The first time you make handmade watercolor paper, you will learn two truths immediately: (1) paper pulp can travel, and (2) your “quick afternoon craft” has the potential to become a small, damp lifestyle. I expected a tidy little batch of sheets. Instead, I got a workspace that looked like a friendly ghost explodedcotton fluff on the table, on my shirt, and somehow on the doorknob I never touched.

What surprised me most was how sensitive the process is to tiny changes. When my vat mixture was too thick, I pulled sheets that were heavy and dramatic… and also kind of uneven, like they were trying to be watercolor paper but were born to be cardboard. When I thinned the vat, the formation improved immediately. The sheets looked more consistent, and the surface felt less “lumpy oatmeal” and more “art supply I would actually buy on purpose.”

Couching was the moment of truth. I learned that confidence matters. If you hesitate while flipping the mould, the sheet can wrinkle or tear. If you commit (calm hands, one smooth motion), the sheet transfers like magic. I also learned to keep the couching cloth slightly damp. Too dry, and the paper doesn’t release nicely. Too wet, and the sheet can drift or stretch like it’s trying to escape.

Pressing was my biggest “ohhhh” moment. The early sheets I barely pressed dried wavy, and the first wash cockled like a potato chip with ambitions. When I pressed longerboards, clamps, and just a little patiencethe difference was huge. The paper dried flatter, handled wet-in-wet better, and felt stronger when I tried to lift pigment. If you only upgrade one thing in your setup, improve pressing. Your paint will notice.

Sizing was the part that felt most like a science experiment. Unsized paper drank pigment instantly, which made blending harder and colors look duller. My first gelatin bath was too strong, and the sheet dried a bit tackylike it wanted to become best friends with the glass drying surface forever. I adjusted by making a weaker solution and dipping quickly, then pressing lightly before drying again. That second attempt gave me the “sweet spot”: washes stayed workable longer, edges didn’t feather as much, and glazing was more predictable.

The most useful habit I developed was testing each batch with the same mini-painting: a flat wash, a wet-in-wet bloom, a lifted highlight, and a glaze. That little test told me exactly what to change nextmore sizing, more pressing, or a better-beaten pulp. It also saved me from making ten sheets of paper that were technically impressive but not fun to paint on.

If I were starting over, I’d keep it simple: cotton fiber for consistency, a well-diluted vat, longer pressing, and surface sizing I can adjust. Then I’d experiment one variable at a timetexture, sizing type, drying surfaceso I could actually learn what caused what. Papermaking rewards curiosity, but it also rewards restraint. (Says the person who immediately tried embedding fibers on day two. Results: artsy, but chaotic.)

In the end, the best part wasn’t just the paperit was how the paper changed the painting experience. Handmade sheets have personality. Some are smooth and controlled, others have tooth and surprise. And every time you paint on them, you remember you made the surface itself. That’s a very satisfying kind of creative loop… even if you’re still finding stray pulp in weird places a week later.