Er16 will have a maximum collet size of something like 10mm so if you are using imperial bits then mostly 1/4" which there are a lot so might suit your needs.
When I am using large bits & you will need them for certain jobs I like to use a 1/2" shank bit, might be just my own personal preference, so larger bits for jobs like surfacing a piece of stock before carving for me are all 1/2" shank. You will also need a bigger bit for surfacing your spoilboard.
When I am using large bits & you will need them for certain jobs I like to use a 1/2" shank bit, might be just my own personal preference, so larger bits for jobs like surfacing a piece of stock before carving for me are all 1/2" shank. You will also need a bigger bit for surfacing your spoilboard.