[chbot] 50-70mm diameter disks

[Andy Gardner]

Yep. I'd be grabbing the hole saw and a bunch of used polyurethane chopping boards at $1 each (or less) at the op shops.

A very cheap source of antenna insulators, BTW.

Andy
ZL3AG

On 27/11/2014, at 2:41 PM, Spencer Travers wrote:

> If a centre hole is acceptable then you could use a hole saw. I have had good results cutting ABS. I used a good quality arbor and saw with 3 cutting teeth, not the ones with serrations.
>