Hi all. I’ve built a full sheet LR4 with a 1.5kW air cooled spindle. I had done some testing with a Makita clone router before my spindle arrived and it was cutting just fine. I was taking 7mm DOC cuts with a 6mm compression bit and it looked beautiful!
I’ve installed my spindle now and for the life of me I can’t figure out what’s wrong, but it will barely cut at 2mm DOC with a 4mm bit.
I’ve tried changing the rpm from 12k all the way to 24k and it seems the sweet spot is around 17k for this 4mm bit, but 2mm DOC is all I’m able to do and it’s not even pretty.
Anybody out there have an air cooled spindle as well who can share some of their experiences?
I had a 1.5kw air cooled spindle on my LR3 for its entire life and never had that issue. Sounds to me like you don’t have something set quite right in the VFD. Is your VFD/Spindle 110v or 220v? Did they come together as a package or did you buy seperate?
Could be that the bit is toast (dull). Especially if you were running it at too low of a speed/feed (rubbing).
You don’t say if this is a single flute or 2 flute, and you don’t say what feed rate you were using, or what material you are attempting to cut, so it is hard to know what the issue really is.
I’m in NZ, so it’s a 220V setup. I got the spindle and the VFD (YL620-A) as a kit from HLTNC.
As far as I can tell, the settings are correct as the standard settings are actually for a 1.5kW 400Hz spindle.
4mm 2F compression bit, 6mm 2F compression bit, 6mm 1F upcut bit, all brand new.
Initial cutting params were 6mm DOC, 18000rpm, 1400mm/min.
When that didn’t work, I started changing things around. Oh, I was cutting 12mm MDF.
Sounds like something isn’t right with that spindle/VFD. Triple check ALL of your wires and if everything is good then I would contact the place you got it from. That spindle should have more power than the trim router not way less
Can you post the spindle settings of your firmware, also double check spindle wiring and vfd configuration (it depends actually on the vfd brand/model)
A 800w spindle with vfd is more powerful than a trim router by a lot, a 1.5kw is way more than that
Okay, it did seem to be something on the VFD that caused it. I thought I factory reset it, but I think I forgot to turn it off for it to take effect.
In any case, she’s ripping through MDF with a 10mm DOC now
Could be. I was playing around with the settings before running my test cuts, and I’m pretty sure I messed with the torque curve, hence it bogging down during cutting. And factory reset did the trick in my case.
