For some reason or another, I cannot find a router guide bushing bigger than the normal 1" or so. I bought some many years ago. Two of them. One was 1-3/4" OD and one was 1-5/8" OD. They are used in conjuction with either a 3/4" or a 5/8" bushing along with a 1/2 bit in order to make inside-outside parts for inlay work. I have a kit for a 1/4" bit from Lee Valley, which achieves the same thing, but doesn't have the utility to be plowing out 1/2" acrylic. For that, I want to use a 1/2" single flute up-spiral. I suppose the option is to have a machinist make me a sleeve that steps up a 3/4 bushing to 1-3/4". But I KNOW the larger ones exists, but just can't find the things anywhere.
HELP??
TIA
r