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Showing posts from July, 2025

Hygroscopic Plastics

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  Outgassing: Problems Arising Out Of Thin Air Some plastics can absorb moisture from the air.  These materials fall into the category called “hygroscopic plastics”.  The best known product in this group is  polycarbonate . It’s not, however, the only  hygroscopic  plastic. Nylon and polyester can also absorb water vapor. Water vapor isn’t the only substance that polycarbonate sheet can absorb.  Researchers have discovered that polycarbonate can also become saturated with oxygen.  While absorption of moisture and oxygen isn’t always a problem, it can be, especially when you are decorating the sheet with vinyl graphics. As the plastic outgases, bubbles can form under the applied vinyl graphics.  Polycarbonate can absorb moisture and oxygen from the air. As the plastic outgases, bubbles can form under the applied graphics.  Moisture in polycarbonate sheet is also an issue for sign makers, who are  thermoforming  signs.  Here...

How to crochet a cute bag with the lace shell stitch | free pattern + video tutorial

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  Hi everyone! This is the written pattern to accompany my video tutorial on YouTube. You can use this made-to-measure pattern to crochet a bag of any size with adjustable straps. You can easily adjust the pattern by increasing/decreasing stitches and rounds to create a handbag, shoulder bag, tote bag, crossbody bag  Abbreviations: ss - slip stitch / dc - double crochet / sc - single crochet You can find the yarn I used on  my amazon storefront  + you can create your dream website like I did with the  Universe app  :)  use my link to download it for free and start creating! Measurements of my mini shoulder bag: Width - 7.5 inches (I chained 30 at the beginning) Length - 6 inches (I did base + 10 rounds) Part 1: Base Make a slip knot and chain the desired width for the bag (please keep in mind that the bag's size might increase by 1/2 inch after the shell stitch round) Skip 2 chains then insert 6 dc into the 3rd chain Insert 1 dc into every chain until ...