How critical is the rpm recommendations for router bits versus the routers rpm ratings?

It really depends on what material you'll be cutting, how you'll be cutting it, and whether you're using a router table or hand router. There are TWO reasons for reducing blade speed: 1) to avoid burning the wood/blade and 2) to keep larger blades from spinning apart. If you're using <=1" dia blades you can pretty much disregard the spinning apart bit. I've been a professional woodworker for a dozen years and here's what I do: Check the manufacture's recommended blade speed, to get me in the ballpark. Then start cutting at around that speed. If the cut is rough, I'll increase the speed a bit. If there's burning, I'll reduce the speed. CRITICAL ISSUES will be when you change the wood feed rate (how fast you're plowing through the material), and when you change direction of cutting related to the grain (routing around rounded corners, changing routing angles). If you're routing along the grain, there's minimal resistance on the blade, but as you go around corners or change angles you'll be going cross-grain which increases resistance. Resistance=Heat. Every cut is different. Every wood is different. Go slow and shallow, but NOT too slow, and always watch the cut so you can speed up or slow down as needed. Also, for the advanced woodworker, there's the 'climb cut' (going backwards), which generally creates a whole lot less heat, but can be VERY dangerous.

ASIN	B08TZZR3Q7
Batteries Included?	No
Batteries Required?	No
Best Sellers Rank	#172,233 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #304 in Edge Treatment & Grooving Router Bits
Customer Reviews	4.4 4.4 out of 5 stars (345)
Cutting Diameter	1.27 Centimeters
Date First Available	January 26, 2021
Item Package Quantity	1
Item Weight	12.42 pounds
Item model number	70-PCS
Manufacturer	Kowood
Number Of Pieces	12
Number of Flutes	2
Package Dimensions	19.25 x 15 x 4.5 inches
Part Number	70-PCS
UPC	770456327432

Router Bits Set 1/2 Inch Shank 丨70 - Piece Set.

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