Plastic Hole-Stabilising Rings

[Steven Rules]

Which brings us right back to the quote that kicked this off in #1. The circle (or 4 1/4 inch diameter ring) is now complete.

 

[srixon 1]

View attachment 49757

I hit one of those on the fly once from about 150 yards away. Don’t remember the course but it was somewhere in Wales around the Monmouth area. The ball ricocheted off the green, and the hole liner shot halfway up the flag stick before dropping back down to sit half in and half out of the hole. We had to replace it properly before we could finish the hole.

 

[rulie]

OK, 4 1/4. If you cut the holes with a standard hole cutter, and insert a ring that is 4 1/4 inside dia, the soil is going to yield the 1mm thickness of the plastic ring, not the ring reduce. The ring is very slim. I would guess easy enough to get a ring down a standard cut holes with such a slim ring. As long as the interal dia of the ring is 4 1/4, then its a legal hole.

Sorry, those rings are designed as 4 1/4 inch outside diameter, hence they can't also be 4 1/4 inch inside diameter and must be non-conforming. They are also designed to form-fit on top of the hole liner and therefore don't move independently.
Stop digging.