When laminating vegetable tanned leather, how can you ensure that there are no black lines when seal

Why are there black lines between the layers I made? Do you need to use flat nose pliers to tighten it? Master 5o: One of the major problems with vegetable tanning is the black line. So first of all, don’t think of it as a technical problem. Simplifying the complex and simplifying it is a technical problem. Why is there a black line? To put it simply, the black line is glue. Like a hamburger, the cheese squeezes out when pressed. So, as long as you glue it well, it will be fine. There are several methods mentioned on the Internet, one is to leave an edge, and the other is to squeeze. The reason for leaving an edge is to allow the glue to become thinner by squeezing.

But this technique There is a very important issue that you need to pay attention to, that is, when leaving the edge, do not leave the edge glue too thick. This is meaningless because if it is too thick, it will be the same as if it is not left at all when extruding.

Second Just squeeze, squeeze out the glue and wipe it off quickly, so that the thickness of the glue left on the edge becomes smaller.

This method is suitable Non-speed gluing can also be solved with a little more dexterity. Furthermore, depending on the skin, the polishing direction can also be determined. I won’t say this anymore, the meaning should be clear. All in all, in a nutshell, the glue needs to be thin! The glue needs to be thin! The glue needs to be thin! Don't smear it all over the place like you're scraping it off, be gentle, slow and control it when you apply it. >>>>>>Another solution haha. In fact, it doesn’t require as much effort as the above! The easiest thing is to change the glue! Water-based! Penetrating! It can ensure that the glue is not so thick and does not require too many skills. Its all done by hand. Every step requires you to have enough patience and skills. Every step will affect the performance of all subsequent operations. Have a little patience, otherwise I will waste so much life. I spent 80% of my energy on edge sealing and 20% on gluing. I still want to remove the black line, which is impossible. When sealing the edge, you have to say: Blame me? Lin Xi in my heart: reasons, mainly paintedThere is too much glue, and the excess glue squeezes out to form a black line. Practice hard and keep practicing to ensure that the glue is applied thinly and evenly. Try to leave a 1mm distance at the edge without applying it. Use a roller to compact it. If you are a handicapped person, it doesn’t matter if it is exposed no matter how you apply it. Leave a few millimeters extra and cut it off after applying it. There is usually no black line on the cut surface. It works if you try it yourself~! ! It doesn't matter if you're too lazy to calculate the margins, just buy dye and edge dyeing can cover it up.

Edge sealing