One of the more common ideas customers have had was adding skate bearings to our acrylic spool holder, so when the supply of acrylic rods ran low, it was a no-brainer to convert the spool holder to use skate bearings instead. Keep in mind everything we design has to work in our print farm. The spool holders are specifically designed to require no adjustment or maintenance and just work day after day and month after month. Any changes to add skate bearings couldn't affect the practical functionality.
