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Forum topic by InstantSiv posted 10-06-2014 03:14 AM 840 views 0 times favorited 4 replies Add to Favorites Watch
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InstantSiv

259 posts in 1059 days


10-06-2014 03:14 AM

Topic tags/keywords: tip router milling joining

I read an email newsletter recently and a tip was to increase the feed rate when using a router. Supposedly you’ll get a cleaner cut and the bit will hold it’s sharpness longer. I feed the router just fast enough where it wouldn’t burn the wood. I tried a faster feed rate (2x to 3x faster feed rate) and I think the tip is good. I noticed the router sounded like it wasn’t struggling as hard. The newsletter said that a faster feed rate will clear the chips out better and keep the bit temperature down. I haven’t noticed any difference in the cut quality.

Anyways just wanted to pass it along.


4 replies so far

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DrTebi

256 posts in 2731 days


#1 posted 10-06-2014 03:22 AM

Interesting, I will give it a try. Are you sure the motor wasn’t working harder at 3x the feed rate?

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InstantSiv

259 posts in 1059 days


#2 posted 10-06-2014 12:33 PM

I can’t say about the motor working harder or not. What I noticed is the sound of the bit chewing up the wood went from a struggling/whining/grumbling type sound to a humming type sound. The other thing I noticed is that with the slower feed rate it felt like I had to push the router along. With the faster feed rate it kinda felt like it was on auto pilot almost. I didn’t feel like I had to push once I got to the right feed rate. It felt like I was just steering.

A better term might be resistance. It felt like there was more resistance with a slower feed rate.

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DLCW

530 posts in 2118 days


#3 posted 10-13-2014 10:48 PM

This was the first thing I had to accept when I got my CNC. I didn’t run my work past my bit on my router table very fast. My bits didn’t stay sharp for very long.

When I first started using a CNC in my business I used the same slow feed rates. Bits dulled pretty fast. An experienced operator told me to speed it up. I now cut at a speed of 5 to 7 inches per second which is faster then you can safely go with a hand router but I was amazed at how long the bits stayed sharp and how much better the cuts were.

It is called chip load. Every bit has a RPM and feed speed that will create the ideal sized chip when it cuts the wood. For straight cutters manufacturers provide tables for figuring this out. Then you need to dial it in to the exact speed and RPM for your particular CNC (router). I now feed much faster on my router table then I had before getting the CNC. Bits are stay sharper and my cuts are cleaner. I’m glad I learned on the CNC that I was feeding my hand router to slow all those years.

In the CNC world there is a saying “A screaming bit is a hungry bit”. A bit that makes high pitched sound and a LOT of noise is either being feed to slow or the RPM is to high. The same goes with a hand router.

-- Don, Diamond Lake Custom Woodworks - http://www.dlwoodworks.com - "If you make something idiot proof, all they do is make a better idiot"

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TheWoodenOyster

1275 posts in 1399 days


#4 posted 10-13-2014 11:52 PM

Very interesting stuff. I’ll have to give this a shot next time I use my router.

-- The Wood Is Your Oyster

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