I got my machine 10.25 months ago, and I have not had my Makita go bad, YET. But now that you posted this, I’m pretty sure it’s about to do the same. Especially after I just finished using the large 1.25" diameter surfacing bit, I could hear this unsettling humming sound that I never heard come from it before but sounds like the wheel bearings on my car at about 45 Mph. I slowed the feed and RPM down some and while it is actually cutting the sound goes away. But returns after the bit goes to do a rapid move. I double-checked the bit is in the collet securely and not too far or too shallow within.
We have to keep in mind these are handheld trim routers designed for a contractor to run across a countertop, stop for an hour or more, then do a couple window sills and call it a day. I just finished another 3D carving that lasted 10 hours. They’re just not made for that day-after-day. BUT, Jeff Bezos has them listed on his website for ~$125. I just paid $43 for an end mill and would think when valuing your time of replacing an already worn out part of something that can be all new, chuck it up to yearly maintenance cost?
[Edit] Or, upgrade to a spindle which are designed for these things.
Here’s a bunch more info on this situation. You can’t run end mills that are bigger than 1/4" or run a low speed for a long duration. This router is a joke. You have to go to a spindle to do anything seriously; even for a hobby user.
One thing that 1F is right about is that the Makita is good for the learning curve. Getting to know CAM with its ‘Speeds and Feeds’ and all the rest isn’t a walk in the park. The spindle installation looks like it’s another complex step.
I bought a Mechatron spindle, believing it would last longer than a Chinese product.
I’ve flattened the Journeyman bed once (2" bit) but mostly used very tiny-tipped (0.01") single-flute carbide cutters on brass. Cutting times of 3-5 hours at 24,000 RPM. The spindle is cooled by a Mechatron water pump.
I knew that the pump begins at room temperature (22 C) and in short uses, increased to 24 C. I wasn’t surprised to see 28 C but noticed an odd odor that I couldn’t confirm to be from the spindle. As it approached 31 C I realized the air circulation around the cooling pump was poor. I adjusted that, but the next event showed I was too late. Within minutes the VFD error code (“OC-3”) told me the resistance was too great, and it shut down.
It ran after re-setting, but the sound was very rough. After cooling, the sound was less rough, and it made a couple more runs. But even when fully cooled and turning by hand, the bearings are rough. I’m waiting for Mechatron to tell me whether repair or replacement are my options.
a cyclonic dust separator always takes some suction power (even if you find it basically useful). I own a workshop vacuum cleaner with cyclonic separator too, but I don’t consider a workshop vacuum cleaner to be the right thing to extract the dust from stationary machines at all. They go with sanders and other hand tools etc. which always have an extraction fan inside, but on a CNC milling machine, like on a table saw or a thicknessing planer, you have to span larger distances when sucking.
How did the dust ingress so badly?
The bearings are not in direct line of the airflow (both vacuum and the router cooling blades). The bearings had covers on each side. Not sure if this make them “sealed” bearings?
The route of the dust particles is around the complete bearing assembly…
BUT obviously the inside of the bearings are saturated with dust particles.