So now that i have made time to get back at working on my book build that i have been tinkering with on and off for the last 4 years, I am finally able to cut some stuff. Back when i first got everything going i purchased a porter cable 690LR (single speed). i now realize it was probably a mistake not getting a variable speed one. The few things i have cut in the past I have done nothing but burn up bits after running for an hour or so. Most recently i was cutting some router mount pieces and on some of the smaller diameter hole mounts, the wood would begin to smoke. The label on the router says it runs at 27,500 RPM. I had the machine running at 10 IPM. The reason i have the IPM so low is because the last time i got impatient and bumped it up to like 30 and it turned in to a train wreck for the most part. part of the problem could have been that i was running a 1/2 end mill...idk.
So, what im asking is, are there any suggestions as to how i can avoid my problem and still make decent cuts? I am saving for a spindle/vfd combo so id rather not waste money on a super PID.
I plan on doing some detailed work in the next week or so (Celtic weave on for a cross) using both a 1/4" and 1/8" ball nose. any suggestions there to avoid tear out?