Whipped up a quick ‘hello world’ program (and got fancy with a tool change) after reterminating the y-axis motor connections and moving the limit switch down so the gantry could clear. About 5 minutes into the job (running at all the defaults for that tool plus a little sped up feed because it was just slooooowww - it’s pine) the router quits making noise and lets the magic smoke out.
5 entire minutes.
That is by far the fastest I’ve ever killed a power tool.
I really didn’t think that doing glacial slow passes in pine would kill a router before it broke an endmill. It did smell a little ‘off’ on first crank up but I attributed that to just assembly smells. I wonder if I have it too tight in the clamp?
Obviously it was put together incorrectly - the smoke containers weren’t sealed properly thereby allowing the smoke to escape prematurely. I’m sure Carbide will send you a new, properly smoke sealed unit right away!
I’m sure it was just a defective router. Contact customer support and I’m sure they’ll take good care of you.
But as a 5+ year user…and seeing that you purchased a PRO model…can I make a recommendation? (Pick up a Makita RT07 Model. I installed one on July 2016 and run it almost everyday…on 2/2/21 I finally changed the OEM brushes…after what I estimated to be 6000+ hours of hard use…and I cut metal with it…(except for that one Chippendale Claw Foot Partner Desk I made)
I love my machine…I love Shapeoko…but putting a Chinese knock-off of a Makita Router on such an awesome machine…never made sense to me…
And PLEASE put a sock (pre-filter) on it (to greatly extend the life of the brushes)…cause I’m not just a pretty face…I’ve also recently stayed at a Holiday Inn Hotel…and an Ex-NASA (retired) Engineer.
Sorry you got the bad apple Sir. It sucks when your new investment literally goes up in smoke.
Any time you mass produce anything it’s always a roll of the dice as to what percentage will fail prematurely and when it’s made in China those odds increase. But even high end tools have a premature failure rate and although most are caught during testing. Longer tests increase overall product costs and when thousands of units are being produced its more cost effective to replace the few defective units then to increase customer costs to thousands of customers.
I hope you get back up and running soon!
I also see you had the router set to 5 or 6 and suggest when your new router arrives to break in the bearings and brushes.
Start with an end mill tightened at low speed and no load for 1 minute, turn off the router for a minute, turn it back on for 2 minutes at setting 2 or 3 then let it cool for a few minutes again and repeat at a higher setting.
My router when new would noticeably slow down for a second and recover during this process but after running it in the RPM drop went away. The bearings will get hot until fully broken in and that takes a few cycles.
The Makita has an eight (8) foot cord…but I don’t know what “Long Enough” means…I’m a machinist, and engineer…we need numbers to answer a number question…
PS Regardless if it came with an 18" cord, an extension cord is a cheap method of adding a premium router to the awesome PRO machine… unrelated, but fun to say…you can put lipstick on a pig…it’s still a pig
This is solid advice for anthing that rotates quickly (well, viscous liquid advice anyway ;- )
I read some interesting things about bearings and lubrication whilst reading up on spindle motor efficiency with @gmack . In a couple of research papers there was some solid discussion of the power loss to the bearings which described the changes in friction losses in the bearings as RPM increased. The losses initially rise with speed and then drop sharply as the grease exhibits ‘rheological behaviour’ under the high-speed movement of the bearing and transition from thick goop to an oily liquid with much lower viscosity and drag on the bearing. Both the flow speeds and temperature seem to be involved in this transition.
This appears to be related to the spindle warm-up programs that many VFD users and lots of the big machine manufacturers such as Haas recommend. In initial cold-start the bearings are cold, clearances are not what they will be when warm but also the lubricant (if grease based) is thick and goopy and sitting wherever it congealed after the last run. As the spindle runs slowly it works the grease around, warming it up and getting ready to run high RPM without the grease creating hydraulic forces which damage the bearing.
On a new bearing this will be particularly important as it will be freshly packed with grease and may still be tight on clearances until it has run in.
That’s the edge of my mech-eng, I’m sure there’s somebody here who knows a lot more about this.