If you need a tube that will perform in all conditions, bi-directional layups are ideal; if you need a tube with good torsion performance, choose a product with more 45° layers; if you need to increase thickness quickly, braided material Might be a good choice. Take a close look at a section of carbon fiber or fiber glass tubing or plate and you will see that the fibers go in different, specific directions. Comparing different styles of tubing you might notice that fiber direction, also known as orientation, is not always uniform. Sand down the end of the tube to that line. 0° direction If a. Now, I need to assemble the OTA and make minor changes and repairs to the fiberglass tube. Here's the scope as it is now: The end rings aren't in place yet, as i need to either move the mirror back or the focuser and spider up about 4 inches! Using the cell I have in hand, I could use the original. In this post, we'll explore 10 helpful tips and tricks that will take your fiberglass work from novice to knowledgeable. Whether you're repairing a boat hull, making cosplay armor, or crafting a custom car body, these insights will help you achieve the strong, smooth, and professional-looking. This guide will walk you through the most common mistakes people make when repairing fiberglass and, most importantly, how to avoid them. Why Fiberglass Repairs Can Be Tricky Fiberglass and resin.