I’m thinking about a project where i’d have 1/8" or 3/16" brass rod inserted into a wood panel (like pins), or possibly laid in a line around the edge (picture frame style). Once it’s inserted, I’d want to surface the panel/rod to make it all flush. If I’m running a surfacing pattern across a larger board and the 1/4" endmill would occasionally encounter the brass rod, I’m thinking I’d have to use feeds/speeds for the brass instead of a faster rate for the wood, but would I need to use any kind of coolant? Or would cutting through 1/8" brass rod with a small stepover and DOC not require it?
Alternatively, I could set up some geometry around the brass part to avoid it while surfacing the wood, then pass back and forth over the brass slowly until it’s down to the same level… say, passing an inch or so to either side of it to let the endmill/brass cool between cuts.
Does this sound like a plan for avoiding the use of coolant? I’m worried about staining my wood panel with coolant.