knots in pine redwood

[Matt Baker]

hello you beauties

I am starting out on this cnc adventure please forgive the "noobness" - i have just received my first delivery of wood ( planks of redwood to chop down ) and there are knots dotted across them.

some of them are fairly big so i know im going to have to avoid those, but there are smaller ones (15mm across and smaller), some going through the thickness of the plank (32mm thick)

i was thinking i can dig these out and fill with a dust/glue mix as it's a trick my carpenter friend does making furniture but i cannot find much info online regarding what happens when a router bit hits it. will it damage my bit? will it rip the wood?

has anyone had success with this? or should i avoid them all like the plague and only work with the wood without knots.

many thanks. matt