Okay, I'll fix a couple of issues mentioned here by other users. As for my knowledge of the use and behavior of materials: I paint, draw, draft, sketch, sew, embroider, paint on paper and stained glass, work a lot with wood and do/maintain/spend a lot of time with multiple jobs. other arts, crafts and music making. In the last 40 years. This means I can see the differences in quality in most craft products and over the years I have amassed a wide range of products that are varied and designed. In addition: A: Only WHITE sticks are real CHALK. Colored pencils are made of the same material as colored pencil leads, wax type. IF you want to mark fabric with colored pencils but want the markings to disappear, DO NOT USE this product. As I said in point A, colored crayons. The mark is not deleted. You'd be better off using baby sidewalk chalk or regular size colored chalk from Crayola or Rose Art, or a generic brand name chalk. I had no problem with them marking my fabrics including my wedding dress. S: As for the breakdown. Leave only about a quarter of an inch (or about 7mm) of the chalk tip open. This maintains the pressure imprint inside the cartridge. The same concept as mechanical pencils and regular wooden pencils: if the tip is too long it will break, when you push it with your hand and try to drive it over the surface. And some people (like me) naturally apply more pressure when writing than others. D: White chalk looks great on a blackboard, as does regular chalk for smaller, more detailed drawings, writing, etc. E: The included sharpener works great! He sharpens sticks to the perfect size. Be careful not to push the stick too deep into the sharpener or it will break where most of the pressure is applied (usually the slight curve created by twisting/twisting). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. He sharpens sticks to the perfect size. Be careful, Don't push the stick too deep into the sharpener or it will break where most of the pressure is applied (usually a small curve created by twisting/twisting). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. He sharpens sticks to the perfect size. Be careful not to push the stick too deep into the sharpener or it will break where most of the pressure is applied (usually the slight curve created by twisting/twisting). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. where the most pressure is exerted (usually a small curve, created by twisting/turning). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. He sharpens sticks to the perfect size. Be careful not to push the stick too deep into the sharpener or it will break where most of the pressure is applied (usually the slight curve created by twisting/twisting). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. where most pressure is applied (usually a small curve created by twisting/rotating). Chalk should not bend at all! Waxy tips may have a slight bend allowance, but still very little at shorter lengths. I hope it helps. He sharpens sticks to the perfect size. Be careful not to push the stick too deep into the sharpener or it will break where most of the pressure is applied (usually the slight curve created by twisting/twisting). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. He sharpens sticks to the perfect size. Be careful not to push the stick too deep into the sharpener or it will break where most of the pressure is applied (usually the slight bend, created by twisting/turning). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. He sharpens sticks to the perfect size. Be careful not to push the stick too deep into the sharpener or it will break where most of the pressure is applied (usually the slight curve created by twisting/twisting). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. created by twisting/turning). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps. created by twisting/turning). Chalk should not bend at all! Waxy tips can have a slight bend allowance, but still very little at shorter lengths. I hope it helps.
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