Decided to use this for green chalk so it's of little use. What I don't like is that the handle doesn't fit securely even though there is room for it. You can place the pen grip in a small spot where it fits, but it tends to fall out. This does not affect the function of the tool, but can be annoying. The 3:1 ratio is spot on. Anything higher than this value makes the string very prone to flapping and tangling/knotting.
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