On Wednesday, January 11, 2017 at 8:09:21 AM UTC-6, Joseph Gwinn wrote:

Gradually a list of requirements formed:

1. Must attach using a screw. No nails!

2. Must have a hard smooth durable surface that will not accumulate or embed
grit.

3. It should not wear out in less than ten years.

4. It cannot rust or corrode in indoor service. Outdoor service a plus.

5. It would be nice if they accommodate slightly uneven floors.

6. It would be nice if they weren't too expensive.


7. Noise reduction
Seems the Delrin casters are of hard material, maybe fine for outdoors, but not sure about indoors. On hardwood/ceramic floors, I would think they would "make noise", as the furniture is dragged across the floor.

Many folks are allergic to wool (felt), though an allergic reaction usually requires direct contact with the wool. The more common, cheaper Walmart-type felt casters are made of polyester, a reasonable substitute for those allergic to wool, despite the dust collecting and falling-apart issues with this cheaper product.

Sonny