Hi Dr. Frank
This just my 2 cents..
I would pass on that plate
This is why,,the big hole size is 3 5/8" that's just a little bit small, many of the panel bits are 3 1/2" and 3 5/8" OD .
The turn lock insert are a pain to put in place and to remove, you need to have the spec.wrench on hand all the time..
You want a insert rings that you can snap in place easy...and take out easy.
Then the cost,, 50.oo for the plate and 20.oo more for the rings.
The extra rings are nice to have to choke the hole down but it's best to use the brass type,,,
The plate I recommend is the HF one, it has a 3 7/8" hole with the 3 rings,and it's only 20.oo bucks and if you want the rings to choke the hole down they are only 26.oo bucks plus you can get the brass guides for only 20.oo bucks from HF..so that's to say you can have a V8 for only 66.bucks other than paying 70.oo bucks for something less..
The bigger hole is not that big of deal unless the 1st.time you want to use a panel bit set and the bit will not spin in your mounting plate.. - Harbor Freight Tools - Quality Tools at the Lowest Prices - Harbor Freight Tools - Quality Tools at the Lowest Prices 1-3/16" Router Plate Inserts - Lee Valley Tools Base Plate/Guides - Lee Valley Tools - Woodworking Tools, Gardening Tools, Hardware Supplies
How many router plate ring inserts do you need? One plate I am considering has three ring inserts - One ring is blank which is described as "used when initially drilling RP-60 to match up to your router’s hole pattern;" the second ring has a 2” opening, and the third is used for "accommodating standard template guide bushings."
Is this enough? They also sell a separate kit of 5 rings - 3/4", 1", 1-1/2", 2" and a blank ring for drilling. It seems like this might be a good addition.