WARNING: The pivot on the Rail Height Adjuster for the Hapstone R2 can fall off

Another Shepherd

Another Shepherd

Joined
Aug 9, 2021
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Everything was going along nicely with the Rail Height Adjuster until the pivot that allows the arm to swivel up and down fell out, along with a very tiny screw.

On the side of the Rail Height Adjuster is a little platform that moves up and down. Perched on this platform is a U-shaped bracket that rotates left and right. The two uprights of the U hold a cylinder that swivels up and down. The arm that holds the stone passes through this cylinder.

There is a tiny screw on each side of the U that passes through the upright of the U. The screws are a slightly shiny metallic silverish color and will accept a Torx T8. Grab a screwdriver and turn each screw as if you were tightening it. You cannot actually get them tight. After a certain point they just spin. That's what you want. Then PUT A LITTLE PIECE OF TAPE OVER EACH SCREW HEAD, at least until somebody comes up with a better fix.

The cylinder has a very tiny non-threaded hole on each side. The screws are pointed but the points are not threaded. The points just fit loosely into the holes. That way, you cannot over-tighten the screws, but getting everything back into place is a @#$%&*!ing nuisance.
 
Great service right there, you don't see a ton of companies stand behind their products like this anymore!!
 
Another Shepherd said:
Everything was going along nicely with the Rail Height Adjuster until the pivot that allows the arm to swivel up and down fell out, along with a very tiny screw.

On the side of the Rail Height Adjuster is a little platform that moves up and down. Perched on this platform is a U-shaped bracket that rotates left and right. The two uprights of the U hold a cylinder that swivels up and down. The arm that holds the stone passes through this cylinder.

There is a tiny screw on each side of the U that passes through the upright of the U. The screws are a slightly shiny metallic silverish color and will accept a Torx T8. Grab a screwdriver and turn each screw as if you were tightening it. You cannot actually get them tight. After a certain point they just spin. That's what you want. Then PUT A LITTLE PIECE OF TAPE OVER EACH SCREW HEAD, at least until somebody comes up with a better fix.

The cylinder has a very tiny non-threaded hole on each side. The screws are pointed but the points are not threaded. The points just fit loosely into the holes. That way, you cannot over-tighten the screws, but getting everything back into place is a @#$%&*!ing nuisance.
Click to expand...
Would a very weak strength thread locker work for this??
 
Derrick300 said:
Would a very weak strength thread locker work for this??
Click to expand...
Probably, but if you got thread locker on the parts that are supposed to turn freely, that would be bad.

It turns out there was some sort of gummy substance on the screws. I wonder whether it was supposed to be thread locker of some sort, but it sure didn't work. The screws are actually hex, not torx. The torx driver worked because it temporarily stuck to the gummy stuff in the hex hole.

Anyhow, the masking tape has held through two reprofilings and three sharpenings. As an experiment, I removed the tape, and the pivot fell off one of the screws during the next sharpening.

I will contact Hapstone about it after Christmas.
 
Another Shepherd said:
Probably, but if you got thread locker on the parts that are supposed to turn freely, that would be bad.

It turns out there was some sort of gummy substance on the screws. I wonder whether it was supposed to be thread locker of some sort, but it sure didn't work. The screws are actually hex, not torx. The torx driver worked because it temporarily stuck to the gummy stuff in the hex hole.

Anyhow, the masking tape has held through two reprofilings and three sharpenings. As an experiment, I removed the tape, and the pivot fell off one of the screws during the next sharpening.

I will contact Hapstone about it after Christmas.
Click to expand...
We look forward to hearing from you.

Merry Christmas !

Team Hapstone !
 
Another Shepherd said:
Probably, but if you got thread locker on the parts that are supposed to turn freely, that would be bad.

It turns out there was some sort of gummy substance on the screws. I wonder whether it was supposed to be thread locker of some sort, but it sure didn't work.
Click to expand...

I'm not familiar with the Hapstone R2, but the gummy substance may be some type of grease. Have you tried simply applying your own grease to the threads? It may seem counterintuitive to add grease to something that keeps coming loose, but grease actually allows you to increase the preload.
 
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