AT Pen Holder

thingiverse

This writing tool holder fits snugly around a crayon or pen. Its spherical shape measures precisely 50mm in diameter. A central opening, exactly 9mm in size, allows for easy insertion and removal of the writing instrument. Two sturdy 1/4-20 set screws securely hold the utensil in place, their mounting holes requiring a 1/4-20 tap to cut threads, readily available at any hardware store. Alternatively, you can opt for six-millimeter-one set screws instead of the standard 1/4-20 type.