Notes on stain resistance and edge sealing of handmade leather goods

My brother bought a handmade short wallet before, but unfortunately it didn’t suit his taste, so he gave it to me. I also got into the pit of handmade leather goods. After getting the wallet, I found it was stained And routing is okay. The edge sealing and stain resistance are average. Just prepare to process it a second time yourself. By the way, I would like to share the knowledge I have learned about the stain prevention that is most easily overlooked by novices in handmade leather goods, and the most difficult edge sealing. Take a look at this wallet first, as shown in the picture from the front.

The wiring is as follows picture.

The spine is as shown in the picture

Edge sealing is as follows Picture

【Cover Edge process] Generally, for edge sealing, apply a layer of water to the edge of the leather. This will first prevent shavings from flying during the polishing process, and secondly allow the fibers to absorb water and swell, making it easier to polish. We first use 320-grit sandpaper for rough sanding, and continue to apply water during the rough sanding process to keep it moist. Then sand it with 600 grit sandpaper and brush with water appropriately. The fine hair should be smoothed on this side to make the surface of the leather edge initially smooth. After trimming, sand with 1000 grit sandpaper and then apply edge sealing liquid. Apply a small amount several times evenly. Sandpaper comparison picture.

Use a polishing stick to polish until it is shiny. I have seen many tutorials and books with different edge sealing methods. But the following must be from coarse grinding to fine grinding, sealing Apply edge liquid. So you can control the number of sandpaper by yourself. But don't make the span of the sandpaper too large. The effect of sanding in this way is not as good as that of step-by-step. Edge sealing is actually a job that pays equal attention to patience and care. The more times you sand, the better. The finer it is, the better the effect of the final product will be. In addition, multiple edge-sealing and polishing can also extend the life of the leather goods and make the leather edges stronger. Then the edge-sealing I processed is as shown in the picture. PS: The original trimming is not enough. In order Does not affect dyeing. No need for secondary trimming.

【Anti-staining experience】Speaking of anti-staining, many leather goods novices like to use horn oil or horse oil to color vegetable tanned leather when making belts. As time goes by, it will become more beautiful. The charm. However, plain vegetable-tanned leather must use resist. Although resist is not 100% stain-proof, if the leather surface that has been coated with resist is stained, it can be wiped off immediately with a cotton cloth that is not too wet. If it is not applied, Anti-staining, dirt will enter the pores of the leather and it will be difficult to clean. This is why many people make plain leather belts that will become very dirty after wearing them for a long time and cannot be restored. There are many kinds of anti-dying, For example, oil-based brightener, oil-based matte agent. Multi-functional backing agent. 90% to 50% anti-dye solution, etc. 90% anti-dye can also be called high-gloss enamel. At the same time, it has good anti-fouling, anti-stain and anti-stain properties. It is a reagent that can block 90% of pigments for dyeing, color fixation, anti-cracking, anti-mildew, etc. There are also 80%, 70%, 60%, and 50% anti-dying agents. Percentage expressed The degree of blocking of pigment. As shown in the picture

When I make plain belts, I usually apply horn oil to allow the belt to change color naturally to my favorite level. When the belt changes color naturally, I apply 90% anti-dye solution. This can keep the color and cleanliness for a long time. The agent can make the leather look more gorgeous, and the matting agent can make the leather show a natural luster and highlight a more elegant texture. The multi-functional back sealing agent is actually a mixed agent of edge sealing agent, bed surface treatment and anti-staining agent. It has 50% anti-staining agent Dyeing function. For example, just like a mobile phone film, there are high-permeability films and frosted films. The same is true for anti-dying. In addition, there are: leather softeners, which change the surface texture of the leather, increase the thickness of the oil on the leather surface, and make vegetable tanning SkinThe leather is smoother and softer. As for leather hardener, it is actually a filling resin agent. Because its ions are small. It can easily penetrate into vegetable tanned leather and tightly combine the internal fibers. Thereby achieving the hardening effect. Hardener is very useful for edge sealing of vegetable tanned leather, and the hardened edge leather is easier to polish and shape. Therefore, it does not mean that the leather will not change color after resist dyeing, but it depends on the degree of resist dyeing used. The degree and speed of discoloration also vary. In addition, basically most resist dyes form a protective layer on the surface of the leather. Therefore, when applying resist, it is best to use cotton cloth or a high-quality dense sponge to apply it evenly in one direction. And don't overdose. Remember not to use wool balls, the effect is really bad.

Anti-dyeing and edge sealing