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+-- Thread: 1/4" Router Bit in 1/4" ID Bushing (/showthread.php?tid=7354868)
1/4" Router Bit in 1/4" ID Bushing - Haryo - 04-27-2020
Can I run a 1/4" upcut spiral router bit in a 5/16" OD 1/4" ID brass bushing? The bit seems to fit and doesn't bind, but it is close and with sideways pressure on the template I could see some contact taking place. Would it help to sand the inside of the bushing with a dowel and sandpaper? I'm surprised I couldn't find this question answered in my searches for it.
Thanks.
RE: 1/4" Router Bit in 1/4" ID Bushing - fredhargis - 04-27-2020
I wouldn't, but you might get away with it. A better choice would be the 3/8" OD with a 9/32" ID. If it's brass it won't hurt the bit, and would get reamed out a little in contact.
RE: 1/4" Router Bit in 1/4" ID Bushing - GeeDub - 05-02-2020
I too would jump up a size and adjust my template accordingly. Even a tiny bit of contact gets serious fast at thousands or RPM.