Low-cost router test

[Jeff]

While most people are using the Makita variable speed router for their spindle.  I thought I'd test out one of the lower-end routers on a Lobo mill I'm putting together for the local high school.  I got a Harbor Freight trim router for all of $29.  Surprisingly, this router has gotten pretty good reviews.  It is 1/4 HP with a 1/4" simple split-ring type collet, and runs at a fixed speed of 26,000 RPM .  

Firstly, because I do a lot of stuff with 1/8" shank tools, I tested the run-out with a 1/4" - 1/8" collet adapter sleeve.  Again, I was surprised that run-out was only 0.001" - more or less the same as my Makita.  Also, when I turned it on on the bench, it didn't sound particularly loud as compared to the Makita running at the same speed.  After mounting it in the Lobo spindle bracket, however, it seemed louder than the Makita.  I suspect the mill structure helps radiate sound.  

On light test cuts, it seemed to do fine, running at more or less a constant speed.  On heavier cuts (0.050" deep in aluminum with an 1/8" dia end mill), it would slow down some, which would affect the quality of the cuts.  You'd definitely want to do a light finish pass with a router without closed-loop speed control. 

I also tried out a variable speed control unit with this router (another $19).  It was pretty much useless.  Slowing the motor down to an estimated 15,000 RPM or so left it with so little power that almost any load would bog it down.  As I suspected, closed loop speed control is essential  for running at less than full speed.

My conclusion: if you are just doing light work - light carving in wood or some plastics, engraving, milling circuit boards, etc., one of the compatible low-end routers from Grizzly or Harbor Freight may be fine.  For any more serious work, you are far better off with a closed-loop variable speed router like the Makita.

-Jeff

(BTW, I'm returning the Harbor Freight router and variable speed control and springing for a Makita router for the school.)