Michael Chare wrote:
On 09/10/2017 21:47, Scott M wrote:
Michael Chare wrote:

Any other suggestions as to how to solve this problem?

Hockey pucks are quoted as being good for making custom jacking pads
from.


That is quite an interesting idea, I found a youtube video. My main
problem is cutting a hole in the middle about 3cm in diameter and 1 cm
deep.


You need a boring tool or hinge cutter - see:

https://www.amazon.co.uk/Cutting-Hin.../dp/B00REIK7YU

.... or similar.

--
Graham J