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End Mill vs. Spiral Up-Cut Router Bit

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Blog entry by nobuckle posted 04-07-2011 02:25 AM 3044 reads 0 times favorited 6 comments Add to Favorites Watch

Nothing special here. Just my thoughts on one type of cutter compared to another. In this video I put a 3/4” two flute high speed steel end mill in my router table to show how well an end mill will cut. The router is set at 10,000 rpm and I make two cuts that are around 3/8” deep. For me the issue is settled. But for you, will it be two flute end mill or spiral up-cut?

!!

-- Doug - Make an effort to live by the slogan "We try harder"



6 comments so far

View Dusty56's profile

Dusty56

11664 posts in 2377 days


#1 posted 04-07-2011 04:54 AM

Good video . I’ve often wondered about end mills myself.
You mentioned the chatter marks …I think if you slowed down your feed rate , the cut would be smoother.
Thanks for this post : )

-- I'm absolutely positive that I couldn't be more uncertain!

View TopamaxSurvivor's profile

TopamaxSurvivor

14874 posts in 2365 days


#2 posted 04-07-2011 12:50 PM

Interesting video, thx

-- "some old things are lovely, warm still with life ... of the forgotten men who made them." - D.H. Lawrence

View nobuckle's profile

nobuckle

1120 posts in 1450 days


#3 posted 04-07-2011 03:19 PM

Dusty56, I would hesitate to slow the cutter down for two reasons;

1) My router will not go any slower, I had it set at it’s slowest speed of 10,000 rpm.

2) What I would do is increase the speed and not cut as deep. The groove that I created was about 3/8” deep.

Normally I would not make such a deep cut in one pass. Nor would I use such a large cutter, so the fact that I experienced some chatter was to be expected.

-- Doug - Make an effort to live by the slogan "We try harder"

View Dusty56's profile

Dusty56

11664 posts in 2377 days


#4 posted 04-08-2011 03:29 AM

”if you slowed down your feed rate”

The feed rate is how fast you pushed the piece into the bit , not the speed the bit is turning at : )

-- I'm absolutely positive that I couldn't be more uncertain!

View nobuckle's profile

nobuckle

1120 posts in 1450 days


#5 posted 04-09-2011 01:21 AM

Dusty56, please forgive me for mis-reading your comment. Yes, you are right. If I decrease the rate at which I feed the material across the cutter it may reduce the chatter. I’m only 42 and the senior moments are starting already. Thanks again.

-- Doug - Make an effort to live by the slogan "We try harder"

View Dusty56's profile

Dusty56

11664 posts in 2377 days


#6 posted 04-09-2011 04:01 AM

Wait another 10 years !! LOL
Have a great weekend : )

-- I'm absolutely positive that I couldn't be more uncertain!

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