In short, bad idea. Here's the problem, which is why I didn't put the UHMW
tape under the roller bearing.

The tape is really for sliding surfaces. The roller puts extreme pressure
tangentially on a tint area of flat plastic surface which is not what the
tape was made for. The tape is extremely tough but does have a little
resilience. So I am pretty sure it is inappropriate for use under the
roller bearing that carries the weight of the door. I would say that it
won't last long even under the best of circumstances. And being resilient,
it probably adds resistance to the door.

BTW, I also added the UHMW tape to the top channel and it is working well,
but I have the older nylon slider cube up there. Added bonus, no grease in
the top channel! Much cleaner, me and my friends are no longer getting
grease on our hair and clothes. You would be surprised how many people
linger at the door grabbing the top and getting embarrassing black grease
on their fingers. The tape has put an end to that problem.

-- Gnarlie

On Mon, Jun 2, 2014 at 7:20 AM, Ryan Perry <rjdperry@gmail.com> wrote:

> I used the UHMW tape on the bottom track. It worked good for about a
> month until the roughness of the metal underneath ended up making as
> if it had not been done. The weight flattens the tape bringing through
> the roughness that makes the door loud.
>
> To do it right you will need to sand the channel very flat, paint it
> with whatever you like. And then use super strong adhesive to get it
> to stay down. You will also need to cut the piece since it takes a
> left turn where the door goes under the floor. The tape needs to fit
> exactly together otherwise you will have a very definitive "bump" in
> the roller.
>
> All together though with the channel and bottom track it makes a huge
> difference. Just needs to be done right.
>
> Ryan Perry
>