People with low grip-strength, poor fine-motor skills, or only the use of one hand, find it difficult to accomplish simple everyday tasks. This project allowed one such individual to remove and replace the caps on her water color markers so she could paint by herself. The 3D files we used are included, but the size of the hole will likely need to be modified to match the writing utensil you want to use.

For sharpie markers and pens, we recommend just using the clickable kind. (Yes, there are clickable sharpie markers!)

This design uses a loop on the cap and a stop on the marker to more easily grip and pull.

Supplies

-Access to a 3D printer

-Calipers

-Super glue.

Step 1: Measure

Using the calipers, measure the marker diameter and the cap diameter and modify the files to match accordingly (or recreate them in your own 3D cad software since the design is simple).

Note: If the hole size makes it too loose, the glue will have a tough time holding it when pulled on. Too tight and it won't fit. However, if that happens, just run a drill bit through it to make the hole bigger.

Here are the files we used. However, they are not going to universally fit all pens as they are different sizes.