Two bridle leather panels on a workbench comparing a burnished edge and a painted edge, with a slicker and edge paint between them.
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Edge Paint or Burnished Edges

ByPeter Joeseph 'Briefcase Maker' Kalafatis

One closes the leather and the other covers it, and each one has a job.

Every cut edge of leather gets finished one of two ways if it gets finished at all. You burnish it, rubbing the loose fibers down with water, wax or gum until they pack shut and shine, or you paint it, building a coat on top of the fibers until the raw wall disappears under a smooth line of color. I hand burnish, because it’s the traditional way and on thick bridle it still works. So I’ll make the case for the slicker first. Then I’ll show you where it falls down, because it does.

Video: Edge Painting Techniques, from Tandy Leather on YouTube.

That video is Tandy Leather on painting edges, and I picked it on purpose. My own channel is full of burnishing. If you’re going to hear a burnisher argue, you should see the other side done well first.

The case for rubbing it closed

On thick vegetable-tanned leather, the edge can finish itself.

Hands applying edge paint to the layered edge of a suede-lined leather panel.

Sailrite’s guide to finishing leather edges says burnishing works best on veg tan. You wet the edge with water, wax or gum tragacanth, then rub hard with a burnishing tool until the friction makes heat. That seals the raw edge, gives it a water-resistant skin, darkens it a shade and leaves it glossy. No coats. No layers. The finish is the leather itself, pressed tight.

My Leather Choices page already took a side. Hermann Oak bridle comes “very thick, around 8 to 12oz,” and for a heavy, durable briefcase in it I tell people to “keep the edges traditional by burnishing, not painting.” Thick and firm is what a burnish wants. There’s more fiber to pack, and it packs into something hard.

There’s a second reason, and it’s the one this site has made before. The post called The Edge Nobody Notices Until It Fails argues that a painted edge is a film that flexes and dries differently from the leather under it, so it can crack or chip, while a burnished edge years on has mostly just darkened. I’m not going to repeat the method here. The how is in the post on hand burnishing edges on vegetable-tanned leather.

My opinion: a burnished edge on a bridle case wears the way the case wears. It goes dark at the corners where the hand grabs it. It doesn’t peel, because there’s nothing on it to peel.

It also comes back. My opinion, and it’s a working man’s opinion more than a test: when a burnished edge gets scuffed on a doorframe, you can wet it and rub it again and it closes up, because the finish was never anything but the fiber. A chipped coat of paint doesn’t heal that way. It has to be sanded back and built up again, one layer at a time, and the patch has to match the old color beside it.

Paint sits on the edge, not in it

A coat is only as good as its grip on the first layer.

Sailrite says it plainly. Edge paint “sits on top of the edge rather than sinking into the leather fiber,” and because of that it’s more likely to wear with time. That’s a supplier that sells edge paint telling you so.

On leatherworker.net, a member called dring went looking for the limits in a thread on edge paint durability. He painted thin vegetable-tanned shoulder with two well-known edge paints, sanded at several grits, tried roller pens and an awl, then dragged a fingernail across the result. Both failed. His read: “the paint didn’t bond with leather but is just dried on top of it.” He tried acrylic mediums next, found them harder to scrape off, and said he prefers burnishing for now. In the same thread, the member TonyV, who sands and paints in rounds from 220 grit up to 600 and sometimes finer, says any paint will rub off wallet and belt edges eventually.

That’s one man’s fingernail and one man’s experience. Nobody in that thread ran a test you’d publish. Still, it lines up with what Sailrite says, and with what anybody who has picked at a chipped belt edge already knows.

Another thread, an edge paint versus burnished edges showdown, adds a smaller problem. The member Bolt Vanderhuge found his edge coat could soften back up when he put a finish over the piece, and sometimes it moved onto the faces. Paint is a coat under a coat. Each layer has to agree with the next one.

The same showdown thread has the most honest middle ground I’ve read. The member Tugadude suggested putting a clear lacquer over a traditional burnished edge for extra wear. That’s a burnish with a coat on top of it, which tells you even the burnishers don’t fully trust the bare fiber on something that gets dragged across a desk every day.

Wax and paint do not get along

Bridle carries its own grease, and paint needs something dry to hold.

Macro comparison of a burnished leather edge with compressed fibers and a painted edge with a coat on top.

The edge paint maker Uniters, on its heatable edge paint page, gives a process that starts with a primer coat, then paint, about twenty minutes of drying adjusted for humidity, then a hot iron or a light pass of 400 to 600 grit. Repeat until it looks right. The same page warns that “Certain leathers with waxier content can inhibit penetration.”

Now read what my own pages say about the leather I build in. English bridle is “traditionally very waxy, thick, heavy, and stiff,” on the Leather Choices page. The Leather Care page adds that UK bridle comes from the tannery with “a light greasy top coat.” That’s grease the tannery put there on purpose.

My opinion: the wax that makes bridle hard to paint is part of what makes it easy to burnish. Under the slicker, it melts a little and goes back into the edge. Under a brush, it’s one more thing between the paint and the fiber. Uniters doesn’t say bridle by name. I’m drawing that line myself, from the bench, and you should weigh it as a maker’s hunch and not a lab result.

The hours paint takes

Paint looks like the shortcut. It is not.

People reach for edge paint because they think it’s faster than rubbing. Read the instructions. Sailrite says to plan on three or more coats, the first one thin, with sanding after each and curing between, by air or by a heat gun, a hair dryer or an electric creaser. Tandy’s edge finishing tutorial runs the same prep as a burnish: trim, sand at 80 then 120 grit, sometimes bevel. Then it says to lightly sand after each coat and reapply until you like what you see. It also says to leave the burnishing solution off an edge you mean to paint, and to angle the sanding stick away from the face of the work so you don’t round over the grain.

Then look at the kit. Tandy’s tutorial puts a dye roller pen, a stainless steel edge paddle and wool daubers on the bench. Sailrite says the coats can go on with a brush, a roller or the side of an awl, and that beveling isn’t required and can make the paint harder to lay on clean. When it’s done, Sailrite buffs it with beeswax and canvas or seals it. That’s a whole second set of tools for one edge.

The working leatherworkers back it up. In a leatherworker.net thread on how long painted edges take, the member mike02130 says he put one coat on a wallet at night, and the next day it took most of the day to get three more on with sanding in between. The member fredk, using a quick-drying paint, says a second coat is normally enough. In the showdown thread, immiketoo, who did the painted sample, says simply, “I just wish it wasn’t so much work.”

My own painted edges go the same way, coat after coat, with the iron knocking the bumps down between them. Nobody pays for those hours by looking at an edge. They pay for them when the edge is still smooth later.

Where my argument comes apart

Some edges are not one piece of leather, and a burnish cannot glue them.

Finished bridle leather briefcase with hand-burnished edges darkened at the corners beside saddle stitching.

Here’s the part I’d rather skip.

A burnish works on one thick piece of firm leather. Put a suede lining on the back of that bridle and the edge is two different materials sandwiched together, one that packs and one that fluffs. Sailrite says paint is best for leathers that are “thin, supple, pliable and generally do not burnish well,” naming chrome tan, bonded and exotic leathers. A suede-lined edge is half that list. Sailrite adds that veg tan can be painted too, which is the line burnishers like me tend to skip when we quote the rest.

So I paint. On my lined and suede-lined cases I use a latex-based edge paint, because it glues the layers together while it covers them, and no amount of rubbing with a slicker will do that. That’s why the Leather Choices page steers people toward keeping the natural lining on thick Hermann Oak. Part of that advice is about thickness. Part of it is that a natural-lined edge can still be burnished.

And the evidence isn’t as one-sided as I’ve made it sound. In the showdown thread, immiketoo guessed from his own destruction testing that the painted edge “will be the more resilient of the two,” while saying he had little experience with paint. That’s a guess against this site’s own position, from a man who did the test. I haven’t found anyone who took a painted bridle edge and a burnished one and carried them both through ten years of trains and rain. Neither, as far as I can tell, has anybody else.

Some customers don’t want either. I’ve left edges raw for people who asked, or dyed them and stopped there. It’s their case.

I still reach for the slicker first. The paint stays on the shelf, and I know which edges would be lying if I pretended they didn’t need it.

Fiebing’s Edge Kote, 4 oz: A 4 oz edge coating for finishing leather edges. See it on Amazon (affiliate link).

Fiebing’s Gum Tragacanth, 4 oz: A 4 oz bottle of gum tragacanth, a burnishing aid for leather edges. See it on Amazon (affiliate link).

Beesworks Yellow Beeswax Bars, 6 oz: Yellow beeswax bars, 6 oz, for waxing thread. See it on Amazon (affiliate link).

Wet Dry Sandpaper Assortment, 45 Pieces: A 45-piece wet and dry sandpaper assortment that starts at 400 grit. See it on Amazon (affiliate link).

30-Pack Wool Dauber Brushes with Metal Handles: A 30-pack of wool dauber brushes with metal handles for applying leather dye. See it on Amazon (affiliate link).

As an Amazon Associate I earn from qualifying purchases. A commission may be earned if you buy through this link, at no extra cost to you.

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